Proposed Amendments to the Regulation for Reducing Sulfur Hexafluoride Emissions 
from Gas Insulated Switchgear 
FINAL REGULATION ORDER 
Amend Division 3, Chapter 1, Subchapter 10, Article 4, Subarticle 3.1, sections 95350, 
95351, 95353 (renumbered to 95357.1) , 95354, 95357 (renumbered to 95358) , 95358 
(renumbered to 95359), and 95359 (renumbered to 95359.1); adopt new sections 95352, 
95353, 95354.1, 95355 , 95356, 95357, and 95357.2; and repeal sections 95352, 95355, 
and 95356, of title 17, California Code of Regulations, to read as follows: 
[Note: The proposed amendments are shown in underline to indicate additions and 
strikeout to indicate deletions from the existing regulatory text.] 
Subchapter 10. Climate Change 
Article 4. Regulations to Achieve Greenhouse Gas Emission Reductions 
Subarticle 3.1. Regulation for Reducing Greenhouse Gas Sulfur Hexafluoride 
Emissions from Gas Insulated Switchgear Gas-Insulated Equipment 
§ 95350.  Purpose , Scope , and Applicability. 
(a) Purpose. The purpose of this regulation is to achieve greenhouse gas (GHG) 
emission reductions by reducing sulfur hexafluoride (SF 6) emissions from gas 
insulated switchgear from the operation o f electrical equipment that use s a GHG as 
an insulating medium . 
(b) Applicability. The provisions of this subarticle apply to owner s of gas insulated 
switchgear gas-insulated equipment (GIE) that use s covered insulating gas. Any 
person GIE owner who is subject to this subarticle must meet the requirements 
of this subarticle, notwithstanding any contractual arrangement that person GIE 
owner s may have with any third parties. 
NOTE: Authority cited: Sections 38510, 38560, 38580, 39600 and 39601, Health and 
Safety Code. Reference: Sections 38560, 38562, 38580, 39600 and 39601, Health and 
Safety Code. 
§ 95351. Definitions and Acronyms . 
(a) For the purposes of this subarticle, the following definitions apply : 
(1) “Active GIS Gas-Insulated Equipment” or “Active GIE” means GIE that is 
non-hermetically sealed SF6 gas insulated switchgear that is: and is 
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 (A) Cconnected through busbars or cables to the GIS owner’s an electrical 
power system ; or 
(B) that is Ffully-charged, ready for service, located at the site in which it will 
be activated, and employs a mechanism to monitor SF 6emissions. and being 
prepared for connection to the electrical power system. This does not 
include spare GIE . 
“Active GIS equipment” does not include equipment in storage. 
“Acquire” means to take possession and/or ownership of an item or to obtain an 
item through lease. Equipment under temporary ownership by the manufacturer 
during transport and equipment transported through California that will never be 
used in California are not considered to have been “acquired .” 
“ARB Identification Number” or “ARB ID ” means the unique identification 
number assigned to each GIE owner that reports GHG emis sions to the California 
Air Resources Board (CARB) through the C alifornia Electronic Greenhouse Gas 
Reporting Tool (Cal e -GGRT). 
“Blank -off Pressure” is the lowest achievable pressure of a GIE device or gas cart, 
as recommended by the manufacturer. 
“Carbon Dioxide Equivalent ” or “CO 2e” means the amount of CO 2 emissions 
equivalent to the emissions of a given quantity of another GHG when calculated 
using the individual global warming potentials as specified in the “global warming 
potential” definition of this subarticle . 
“Circuit B reaker” means a device designed to automatically interrupt high currents 
in order to protect electrical equipment from damage. 
“Covered G as Container” means a gas container containing or designed to 
contain covered insulating gas. “Covered Insulating Gas” means an insulating gas with a global warming potential 
(GWP) greater than one.  When the amount of covered insulating gas must be 
calculated for gas blends, it must be calculated pursuant to section 95354( m). 
“Covered Insulating Gas at Activation” means the value calculated in section 
95354(a)(10)(A) 6.. If this value is not calculated , this term means the nameplate 
capacity of the GIE device. 
“Data Year” means the calendar year for which a GIE owner must submit an annual 
GHG emissions data report . 
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 “Day” means one calendar day. 
“Designated Representative” means the person responsible for certifying, 
signing, and submitting the GHG emissions data report. 
(2) “Electrical Power System” means the combination of electrical generators (i.e., 
power plants), transmission and distribution lines, equipment, circuits, and 
transformers  used to generate and transport electricity from the generator to 
consumption areas or to adjacent electrical power systems. 
(3) “Emergency Event ” means a situation arising from a sudden and unforeseen 
event including , but not limited to , an earthquake, flood, or fire. 
(4) “Emission rate” means, subject to the provisions of section 95356(e), a GIS 
owner’s total annual SF 6 emissions from all active GIS equipment divided by 
the average annual SF 6 nameplate capacity of all active GIS equipment. 
(5) “Executive Officer” means the Executive Officer of the California Air Resources 
Board (CARB) or her or his or her designee. 
“Failure” means the sudden and unexpected, or imminent, failure of a GIE device 
that requires replacement of the device . 
“Flow meter ” means a measurement device consisting of one or more individual 
components that is designed to measure the bulk fluid movement of liquid or gas through a piped system at a designated point. Bulk fluid movement can be 
measured with a variety of devices in units of mass flow or volume. 
“Gas Cart” means any device designed to transfer insulating gas into or out of 
GIE, with the gas coming from or going into a permanent or removable gas 
container or the gas cart itself . A gas cart may utilize gas containers, but gas 
containers do not fall within the definition of gas cart. 
(6) “Gas cContainer” means a single vessel containing or designed to contain SF
6. 
“Gas container” a gas used as an insulating gas in GIE . This includes pressurized 
cylinders, any container that can be removed from a gas carts , or other containers , 
but does not include GIE or the gas cart itself . 
(7) “Gas -iInsulated switchgear Equipment” or GIS “GIE” means all electrical 
power equipment , regardless of location and insulating medium (e.g., solid 
dielectric, vacuum, SF 6, alternative gas) , insulated with SF 6 gas that provide 
insulating and/or interrupting (arc quenching) functions related to operation of 
electrical power systems regardless of location . Gas insulated switchgear or GIES 
includes , but are not limited to, switchgear, switches, stand -alone gas -insulated 
equipment, and any combination of electrical disconnects, fuses, electrical 
transmission lines, transformers circuit switchers, coupling capacitor potential 
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 devices, gas- insulated substations, and/or circuit breakers used to isolate gas 
insulated electrical equipment . This definition includes hermetically sealed GIE and 
non-hermetically sealed GIE. 
“Gas -Insulated Equipment Characteristics” or “GIE Characteristics” means, for 
GIE whose voltage capacity is 38 kV or less, the combination of attributes listed in 
Table 1 (configuration, voltage capacity (kV), and short- circuit current rating (kA)) of 
section 95352. For GIE whose voltage capacity is greater than 38 kV, this means 
the combination of attributes listed in Table 2 (voltag e capacity (kV) and short-
circuit current rating (kA)) of section 95352. 
(8) “Gas-Insulated Equipment Owner” or “GIE GIS Owner” means the person 
who owns gas insulated switchgear. GIE that use covered insulating gas. “GIS GIE 
owner” excludes temporary ownership by the original equipment manufacturer 
during GIS GIE equipment transport for purposes of and installation at a 
customer’s site or repair. A GIE owner may be a limited liability company , 
subsidiary, parent company, or other entity that is an owner of the GIE that use 
covered insulating gas . 
“Global Warming Potential” or “GWP” means the ratio of the time -integrated 
radiative forcing from the instantaneous release of one unit of a trace substance 
relative to that of one unit of a reference gas, in this case, carbon dioxide.  The GWP values for this subarticle are as specified in Table A -1 of Subpart A of Title 40 , 
Code of Federal Regulations ( CFR), Part 98 as published in the Federal Register on 
December 11, 2014, which is hereby incorporated by reference.  The GWP of 
Novec -4710 shall be the default GWP for “other fluorinated GHGs” (2,000) as 
listed in Table A -1 of Subpart A of Title 40 CFR Part 98 as published to the Federal 
Register on December 11, 2014.  Reporting of Novec 5110 is not required because 
the default GWP in Table A -1 (Subpart A of Title 40 CFR Part 98 as published to 
the Federal Register on December 11, 2014) for a compound of its type is 1. 
“Greenhouse Gas” or “GHG ” means CO
2, methane, nitrous oxide, SF 6, 
hydrofluorocarbons, perfluorocarbons, and other fluorinated GHGs or GHG groups 
included in Table A- 1 of Subpart A of Title 40 CFR Part 98 as published in the 
Federal Register on December 11, 2014 , which is hereby incorporated by 
reference . 
(9) “Hermetically Sealed Gas -Insulated Switchgear Equipment ” or “Hermetically 
Sealed GIE” means switchgear GIE that is designed to be gas- tight and sealed for 
life.  This type of switchgear is are pre-charged  with SF6 covered insulating gas, 
sealed at the factory, and is designed by the manufacturer to not be refillable by its 
user the GIE owner or a third -party designee. 
“Insulating Gas” means the gas used in GIE to provide dielectric insulation and/or 
to interrupt electrical currents. 
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 (10) “Nameplate Capacity” means the design capacity of SF6 the insulating gas 
specified by the manufacturer for optimal performance of a GIS GIE device .  
Nam eplate  capacity may be found on the nameplate attached to the GIS GIE 
device , or may be stated within the manufacturer’s official product specifications , 
or may be the value calculated by the GIE o wner pursuant to section 95357.2, if 
applicable . 
(11) “NIST -Traceable Standards” means national, traceable measurement 
standards developed by the National Institute of Standards and Technology (NIST). 
“Non- Hermetically Sealed Gas -Insulated Equipment” or “Non-Hermetically 
Sealed GIE” means GIE that contain a covered insulating gas and are designed by 
the manufacturer to be fillable by the GIE owner or a third -party designee. 
(12) “Person” shall have the same meaning as defined in Health and Safety Code 
section 39047. 
“Purchase” means executing an agreement between the buyer and the seller to 
acquire a product such that any reversal on behalf of the buyer or the seller could 
result in a breach of the agreement and/or trigger cancellation or termination 
charges. 
“Replacement Parts” are interchangeable components used to repair a GIE 
device. “Spare GIE ” are GIE that have been acquired by the GIE owner and are intended 
for use by the GIE owner, but are not being used as active GIE or being prepared 
for connection to the electrical power system (e.g., they are in storage) . 
(13) “Responsible Official” means one of the following: 
(A) For a corporation, a president, secretary, treasurer, or vice -
president of the corporation in charge of a principal business 
function, or any other person who performs similar policy or decision- making functions for the corporation, or a duly 
authorized representative of such perso n; or 
(B) For a partnership or sole proprietorship, a general partner or the proprietor, respectively; or 
(C) For a municipal, state, federal, or other public agency, either a principal executive officer or a ranking elected official. 
“Sulfur Hexafluoride Gas- Insulated Equipment” or “SF
6 Gas-Insulated 
Equipment” or “SF 6 GIE” means GIE configured to use SF 6 as the insulating gas. 
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   “Tare weight ” means the weight of an empty gas container that when subtracted 
from the gross weight yields the amount of gas in the gas container. 
“Voltage Capacity ” means the maximum voltage within w hich the manufacturer 
specifies that a GIE device should operate. This value is often reflected on the GIE 
nameplate as “Rated Voltage .” 
(b) For the purposes of this subarticle, the following acronyms apply : 
“ARB” or “CARB” means the California Air Resources Board. 
“CFR” means the Code of Federal Regulations. 
“CO 2” means carbon dioxide. 
“CO 2e” means carbon dioxide equivalent. 
“GHG” means greenhouse gas. 
“GIE” means gas -insulated equipment. 
“GWP” means global warming potential. 
“kA” means kiloamperes. 
“kV” means kilovolts. 
“MT” means metric tons. 
“MTCO 2e” means metric tons of carbon dioxide equivalent. 
“NIST” means National Institute of Standards and Technology. 
“SF 6” means sulfur hexafluoride. 
NOTE: Authority cited: Sections 38510, 38560, 38580, 39600 and 39601, Health and 
Safety Code. Reference: Sections 38560, 38562, 38580, 39600 and 39601, Health and 
Safety Code. 
§ 95352. Maximum Annual SF 6 Emission Rate . 
For each calendar year specified below, the maximum annual SF 6 emission rate for each 
GIS owner’s active GIS equipment shall not exceed the following: 
Maximum Annual SF 6 Emission Rate 
Calendar Year Maximum Allowable SF 6 Emission Rate 
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 2011 10.0% 
2012 9.0% 
2013 8.0% 
2014 7.0% 
2015 6.0% 
2016 5.0% 
2017 4.0% 
2018 3.0% 
2019 2.0% 
2020, and each 
calendar year 
thereafter 1.0% 
NOTE: Authority cited: Sections 38510, 38560, 39600 and 39601, Health and Safety 
Code. Reference: Sections 38562, 38580, 39600 and 39601, Health and Safety Code. 
§ 95352.  Sulfur Hexa fluoride Phase -Out. 
(a) Starting on the applicable phase -out dates, and per the GIE characteristics , 
provided in Table 1 and Table 2, no person may acquire, as defined in section 95351(a), SF
6 GIE for use in California unless one of the following prov isions apply: 
(1) An SF6 phase- out exemption was ap proved by the Executive Officer, or SF 6 
GIE were acquired in response to a failure, pursuant to section 95357. 
(A) GIE acquired with an SF 6 phase- out exemption pursuant to section s 
95357(b )-(h) shall only be used in the projects identified in section 
95357(d)(3) (B), except for GIE that are initially spare GIE, which shall 
only be used in the type of locations described in section 95357(d)(3) (A). 
(B) GIE acquired through the notification process pursuant to section s 
95357( i)-(j) shall only be used in the locat ion described in section 
95357(i )(1)(C)2 ., except for GIE that are initially spare GIE, which shall 
only be used in the type of locations described in section 95357(j)( 2). 
(2) The SF
6 GIE device was present in California and reported to CARB pursuant 
to section 95355(a) for a data year prior to the applicable phase- out date 
listed in Table 1 or Table 2. 
(3) The SF 6 GIE device was purchased by the GIE owner prior to the applicable 
phase- out date listed in Table 1 or Table 2 for the relevant GIE 
characteristics, and enters California no later than 24 months after the 
purchase date. 
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    (4) The SF 6 GIE manufacturer replaces a defective SF 6 GIE device under the 
terms of the manufacturer’s warranty. 
Table 1. Phase- Out Dates for SF 6 GIE with Voltage Capacity ≤ 38 kV 
Configuration Voltage 
Capacity 
(kV) Short -Circuit 
Current Rating (kA) Phase -Out Date 
Aboveground < 38 All January 1, 2025 
38 All January 1, 2028 
Belowground ≤ 38 < 25 January 1, 2025 
≥ 25 January 1, 2031 
Table 2. Phase- Out Dates for SF 6 GIE with Voltage Capacity > 38 kV 
Voltage Capacity 
(kV) Short -Circuit 
Current Rating (kA) Phase -Out Date 
38 < kV ≤ 145 < 63 January 1, 2025 
≥ 63 January 1, 2028 
145 < kV ≤ 245 < 63 January 1, 2027 
≥ 63 January 1, 2031 
> 245 All January 1, 2033 
(b) Starting on the applicable phase -out dates provided in Table 1 and Table 2, no GIE 
owner may convert non -SF6 GIE to SF 6 GIE. 
(c) Replacement par ts are not subject to the phase- out dates provided in Table 1 and 
Table 2 . 
NOTE: Authority cited: Sections 38510, 38560, 38580, 39600 and 39601, Health and 
Safety Code. Reference: Sections 38560, 39600 and 39601, Health and Safety Code. 
§ 95353 7.1.  Emergency Event Exemption. 
(a) A GIS GIE owner may request emissions from an emergency event to be exempted 
from the calculation of the GIE owner’s annual emissions as calculated pursuant to 
section 95354.1 maximum allowable emission rate if it is demonstrated to the 
Executive Officer’s satisfaction that the release of SF6: covered insulating gases: 
(1) Could not have been prevented by the exercise of prudence, diligence, and 
care; and 
(2) Was beyond the control of the GIS GIE owner. 
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 (b) A request for an exemption pursuant to this section must be submitted in writing 
to the Executive Officer within 30 calendar days after the occurrence of the 
emergency event, and must contain the following information: 
(1) The GIS GIE owner’s name, physical address, mailing address, e-mail 
address , and telephone number; 
(2) A detailed description of the emergency event, including but not limited to the following: 
(A) The nature of the event (e.g ., fire, flood, earthquake); 
(B) The date and time the event occurred ; 
(C) The location of the event; 
(D) The GIS equipment that was The manufacturer serial number , as 
specified in section 95354(a)(3) , of all GIE that were affected by the 
event; and 
(E) The type and amount of SF
6 each covered insulating gas released (in 
pounds) .; 
(3) A statement and supporting documentation that the release occurred as a 
result of an emergency event; and 
(4) A signed and dated statement, under penalty of perjury, provided by    
the appropriate responsible official that the statements and information 
contained in the submitted request are true, accurate, and complete 
The appropriate attestation statement from section 95355( c). 
NOTE: Authority cited: Sectio ns 38510, 38560, 38580, 39600 and 39601, Health and 
Safety Code. Reference: Sections 38560, 38562, 38580, 39600 and 39601, Health and 
Safety Code. 
§ 95353.  A nnual Emissions Limit . 
(a) No GIE owner’s annual CO 2e emissions excluding emergency events, as calculated 
pursuant to section 95354.1(c), shall exceed their annual emissions limit. 
(b) GIE owners must calculate their average system capacity, Cavg,j ,i for each covered 
insulating gas j for data year i as follows: 
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 𝑛𝑛 (𝑑𝑑𝑘𝑘,𝑗𝑗 ∗ 𝐶𝐶𝑘𝑘,𝑗𝑗)𝐶𝐶𝑎𝑎𝑎𝑎𝑎𝑎 ,𝑗𝑗,𝑖𝑖 = � 𝐷𝐷𝑖𝑖 𝑘𝑘 
Where: 
“Cavg,j,i“ is the average system capacity (pounds) for covered insulating gas j in data 
year i; 
“n” is the number of GIE devices k that were active GIE insulated with covered 
insulating gas j at some point during data year i; 
“dk,j” is the number of days during data year i that GIE device k with covered 
insulating gas j was in active service ; 
“Ck,j” is the covered insulating gas at activation (pounds ) as defined in section 
95351(a), for covered insulating gas j of GIE device k; and 
“D i” is the number of days in data year i. 
(1) For data year 202 1, GIE owners must calculate C avg,j,i for SF 6 only. 
(2) For data years 202 2 through 2024, GIE owners must calculate Cavg,j,i for each 
covered insulating gas j used in GIE. 
(3) For data years 2025 and beyond , GIE owners must calculate C avg,j,i for each 
covered insulating gas j used in GIE devices k only if all of the following 
criteria are met: 
(A) The GIE device was not included in the calculation of BL CO 2e 
capacity 12/31/2024 ; 
(B) The GIE device has not replaced a GIE device that was included in the 
calculation of BL CO 2e capacity 12/31/2024 ; and 
(C) The GIE device was not acquired pursuant to section 95352(a)(1) , 
either by the GIE owner or by a previous owner of the GIE device. 
(4) For each GIE device k that is jointly owned, each GIE owner must apply its 
equity share to calculate the GIE owner’s share of the C k,j value to use in the 
equation above, pursuant to section 95354(a)(7)(B). 
(c) GIE owners must calculate their average CO 2e capacity on an annual basis as 
follows for each covered insulating gas j: 
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 𝑚𝑚 𝐺𝐺𝐺𝐺𝐺𝐺𝑗𝑗 ∗ 𝐶𝐶𝑎𝑎𝑎𝑎𝑎𝑎 ,𝑗𝑗,𝑖𝑖 𝐴𝐴𝐴𝐴𝐴𝐴𝐴𝐴𝐴𝐴𝐴𝐴𝐴𝐴 𝐶𝐶𝐶𝐶2𝐴𝐴 𝑐𝑐𝐴𝐴𝑐𝑐𝐴𝐴𝑐𝑐𝑐𝑐𝑐𝑐𝑐𝑐 𝑖𝑖 = � 2204 .62 
𝑗𝑗 
Where: 
“Average CO 2e capacity i ” is the average system capacity expressed in units of 
metric tons of carbon dioxide equivalent (MTCO 2e) as calculated for data year i; 
“m” is the number of covered insulating gases j; 
“GWP j” is the global warming potential of covered insulating gas j ; 
“Cavg,j,i“ is the av erage system capacity (pounds) as calculated pursuant to section 
95353(b); and 
“2204.62” is the number of pounds in a metric ton. 
(d) Beginning with data year 2021, GIE owners who elect to apply an early action 
credit (EAC) must calcula te their EAC as follows on an annual basis: 
𝑛𝑛 𝑜𝑜 
𝐸𝐸𝐴𝐴𝐶𝐶𝑖𝑖 = � 𝐶𝐶𝑒𝑒,𝑘𝑘 − � 𝐶𝐶𝑒𝑒𝑒𝑒,𝑙𝑙 + 𝐸𝐸𝐴𝐴𝐶𝐶𝑖𝑖−1 
𝑘𝑘 𝑙𝑙 
Where: “EAC
i” is the early action credit (MTCO 2e) for data year i; 
“n” is the number of GIE devices k that are circuit breakers that became active GIE 
for the first time during the data year, have a voltage capacity of 72.5 kV or 
greater, are not insulated with SF 6 or oil, and for which the phase- out date for an 
equivalent SF 6 GIE (i.e., has the same GIE characteristics), provided in Table 2 of 
section 95352, has not been reached; 
“Ce,k” is the GHG capacity (MTCO 2e) of each equivalent SF 6 GIE from Table 3 for 
device k; 
“o” is the number of GIE devices l that were removed from regular use pursuant to 
section 95354(c)(1) or transferred while in use pursuant to section 95354(c)(2) 
during the data year that were used to calculate EAC i-1; 
“Cer,l” is the GHG capacity (MTCO 2e) of each equivalent SF 6 GIE from Table 3 for 
device l; and 
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 “EAC i-1” is the early action credit (MTCO 2e) calculated for the prior data year. The 
value of EAC i-1 for data year i = 2021 is zero . 
Table 3. Voltage and GHG Capacities of Equivalent SF 6 Circuit Breakers (MTCO 2e) 
Voltage Capacity (kV) Ce,k or Cer,l (MTCO 2e) 
72.5 300 
72.5 < x ≤ 145 700 
145 < x ≤ 245 1,900 
> 245 2,400 
When determining EAC for GIE that are jointly owned, each GIE owner must apply 
its equity share to calculate the GIE owner’s share of the credit, pursuant to section 
95354(a)(7)(B). 
(e) For data year 2025, GIE owners must calculate their baseline (BL) CO 2e 
capacity 12/31/2024 as follows for each covered insulating gas j: 
𝑚𝑚 𝐺𝐺𝐺𝐺𝐺𝐺𝑗𝑗 ∗ 𝐶𝐶𝑘𝑘,𝑗𝑗 𝐵𝐵𝐵𝐵 𝐶𝐶𝐶𝐶2𝐴𝐴 𝑐𝑐𝐴𝐴𝑐𝑐𝐴𝐴𝑐𝑐𝑐𝑐𝑐𝑐𝑐𝑐 12/31/2024 = � 2204 .62 
𝑗𝑗 
Where: 
“BL CO 2e capacity 12/31/2024 ” is the system capacity (MTCO 2e) as calculated for 
December 31, 2024; 
“m” is the number of covered insulating gases j; 
“GWP j” is the global warming potential of covered insulating gas j ; 
“Ck,j” is the covered insulating gas at activa tion (pounds) of GIE device k that was 
active GIE insulated with gas j on December 31, 2024; and 
“2204.62” is the number of pounds in a metric ton. 
(1) For data years 202 5 and beyond, GIE owners must calculate the value of BL 
CO 2e capacity 12/31/2024,i as follows for each covered insulating gas j: 
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       𝐵𝐵𝐵𝐵 𝐶𝐶𝐶𝐶2𝐴𝐴 𝑐𝑐𝐴𝐴𝑐𝑐𝐴𝐴𝑐𝑐𝑐𝑐𝑐𝑐𝑐𝑐 12/31/2024,𝑖𝑖 
= 𝐵𝐵𝐵𝐵 𝐶𝐶𝐶𝐶2𝐴𝐴 𝑐𝑐𝐴𝐴𝑐𝑐𝐴𝐴𝑐𝑐𝑐𝑐𝑐𝑐𝑐𝑐 12/31/2024,𝑖𝑖−1 
𝑚𝑚 𝑚𝑚 𝑚𝑚 𝐺𝐺𝐺𝐺𝐺𝐺𝑗𝑗 ∗ 𝐶𝐶𝑘𝑘𝑛𝑛𝑘𝑘 ,𝑗𝑗 𝐺𝐺𝐺𝐺𝐺𝐺𝑗𝑗 ∗ 𝐶𝐶𝑘𝑘𝑛𝑛𝑘𝑘𝑎𝑎 ,𝑗𝑗 𝐺𝐺𝐺𝐺𝐺𝐺𝑗𝑗 ∗ 𝐶𝐶𝑘𝑘𝑒𝑒,𝑗𝑗 − � + � − �2204 .62 2204 .62 2204 .62 
𝑗𝑗 𝑗𝑗 𝑗𝑗 
𝑚𝑚 𝐺𝐺𝐺𝐺𝐺𝐺𝑗𝑗 ∗ 𝐶𝐶𝑘𝑘𝑛𝑛,𝑗𝑗 + � 2204 .62 
𝑗𝑗 
Where: 
“BL CO 2e capacity 12/31/2024, i” is the system capacity (MTCO 2e) as calculated for data 
year i; 
“BL CO 2e capacity 12/31/2024,i-1 ” is the system capacity (MTCO 2e) calculated for the 
prior data year.  The value of BL CO 2e capacity 12/31/2024, i-1 for data year 2025 is BL 
CO 2e capacity 12/31/2024 ; 
“m” is the number of covered insulating gases j; 
“GWP j” is the global warming potential of covered insulating gas j ; 
“Cknc,j” is the covered insulating gas at activation (pounds) that was last used to 
calculate BL CO 2e capacity 12/31/2024 or BL CO 2e capacity 12/31/2024,i -1 for any GIE device 
knc that underwent a nameplate capacity adjustment pursuant to section 95357. 2 
during the data year; “C
knca,j” is the new nameplate capacity (pounds) of SF 6 GIE device knc that 
underwent a nameplate capacity adjustment during the data year ; 
“Ckr,j” is the covered insulating gas at activation (pounds) that was last used to 
calculate BL CO 2e capacity 12/31/2024 or BL CO 2e capacity 12/31/2024,i -1 for any GIE device 
kr that was removed from regular use pursuant to section 95354(c)(1) or was 
transferred w hile in use pursuant to section 95354(c)(2) during the data year and 
was not replaced or was replaced with a SF 6 GIE device; 
“Ckn,j” is the covered insulating gas at activation (pounds) of SF 6 GIE device kn that 
replaced GIE device kr and was not acquired pursuant to section 95352(a)(1); and 
“2204.62” is the number of pounds in a metric ton. 
(f) For data years 2025 and beyond , GIE owners must calculate their baseline CO 2e 
capacity as follows for each covered insulating gas j: 
𝐵𝐵𝐵𝐵 𝐶𝐶𝐶𝐶2𝐴𝐴 𝑐𝑐𝐴𝐴𝑐𝑐𝐴𝐴𝑐𝑐𝑐𝑐𝑐𝑐𝑐𝑐 𝑖𝑖 = 𝐸𝐸𝐴𝐴𝐶𝐶≤10 + 𝐵𝐵𝐵𝐵 𝐶𝐶𝐶𝐶2𝐴𝐴 𝑐𝑐𝐴𝐴𝑐𝑐𝐴𝐴𝑐𝑐𝑐𝑐𝑐𝑐𝑐𝑐 12/31/2024,𝑖𝑖 + 𝐴𝐴𝐴𝐴𝐴𝐴𝐴𝐴𝐴𝐴𝐴𝐴𝐴𝐴 𝐶𝐶𝐶𝐶2𝐴𝐴 𝑐𝑐𝐴𝐴𝑐𝑐𝐴𝐴𝑐𝑐𝑐𝑐𝑐𝑐𝑐𝑐 𝑖𝑖 
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 Where: 
“BL CO 2e capacity i” is the system capacity (MTCO 2e) as calculated for data year i; 
“EAC ≤10” is the value of EAC i (MTCO 2e) for data year i, as calculated pursuant to 
section 95353(d), unless the value of EAC i exceeds 10 percent of the reported 
value for average CO 2e capacity i for data year 2021, in which case EAC ≤10 is equal 
to 10 percent of the reported value for average CO 2e capacity i for data year 2021; 
“BL CO 2e capacity 12/31/2024,i ” is the system capacity (MTCO 2e) as calculated pursuant 
to section 95353(e) (1); and 
“Average CO 2e capacity i ” is the average system capacity (MTCO 2e) as calculated 
pursuant to section 95353(c) . 
(g) GIE owners shall establish their emissions limit using the following formulas in 
conjuncti on with Table 4 and Table 5: 
(1) For data years 202 1 through 2024, GIE owners shall establish their emissions 
limit using the following formula in conjunction with the applicable values provided in Table 4 and Table 5: 
𝐴𝐴𝐸𝐸𝐴𝐴
𝑖𝑖 𝐸𝐸𝐸𝐸𝑐𝑐𝐸𝐸𝐸𝐸𝑐𝑐𝐸𝐸𝐸𝐸𝐸𝐸 𝐵𝐵𝑐𝑐𝐸𝐸𝑐𝑐𝑐𝑐𝑖𝑖 = ∗ (𝐴𝐴𝐴𝐴𝐴𝐴𝐴𝐴𝐴𝐴𝐴𝐴𝐴𝐴 𝐶𝐶𝐶𝐶2𝐴𝐴 𝑐𝑐𝐴𝐴𝑐𝑐𝐴𝐴𝑐𝑐𝑐𝑐𝑐𝑐𝑐𝑐 𝑖𝑖 + 𝐸𝐸𝐴𝐴𝐶𝐶≤10)100 
Where: 
“Emissions limit i” is the GIE owner’s emissions limit (MTCO 2e) for data year i; 
“AEF i” is the annual emission factor from Table 4 or Table 5 for da ta year i; 
“Average CO 2e capacity i” is the average system capacity (MTCO 2e) as 
calculated pursuant to section 95353(c) ; and 
“EAC ≤10” is the value of EAC i (MTCO 2e) for data year i, as calculated 
pursuant to section 95353(d), unless the value of EAC i exceeds 10 percent of 
the reported value for average CO 2e capacity i for data year 2021, in which 
case EAC ≤10 is equal to 10 percent of the reported value for average CO 2e 
capacity i for data year 2021; 
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 --1 I 
--1 I Table 4. Annual Emission Factors for Average CO 2e capacity (data years 2021- 2024) and 
“BL CO 2e capacity i” (data years 2025 and beyond) ≥ 10,000 MTCO 2e 
Year ( i) AEF i 
2021 through 2034 1.0 
2035 and each calendar year thereafter 0.95 
Table 5. Annual Emission Factors for Average CO 2e capacity (data years 2021- 2024) and 
“BL CO 2e capacity i” (data years 2025 and beyond) < 10,000 MTCO 2e 
Year ( i) AEF i 
2021 through 2034 2.0 
2035 and each calendar year thereafter 1.9 
(2) For data years 2025 and beyond , GIE owners shall establish their emissions 
limit using the following formula in conjunction with the applicable values 
provided in Table 4 and Table 5: 
𝐴𝐴𝐸𝐸𝐴𝐴𝑖𝑖 𝐸𝐸𝐸𝐸𝑐𝑐𝐸𝐸𝐸𝐸𝑐𝑐𝐸𝐸𝐸𝐸𝐸𝐸 𝐵𝐵𝑐𝑐𝐸𝐸𝑐𝑐𝑐𝑐𝑖𝑖 = ∗ 𝐵𝐵𝐵𝐵 𝐶𝐶𝐶𝐶2𝐴𝐴 𝑐𝑐𝐴𝐴𝑐𝑐𝐴𝐴𝑐𝑐𝑐𝑐𝑐𝑐𝑐𝑐 𝑖𝑖 100 
Where: 
“Emissions Limit i” is the GIE owner’s emissions limit (MTCO 2e) for data year 
i; 
“AEF i” is the annual emission factor from Table 4 or Table 5 for data year i; 
and 
“BL CO 2e capacity i” is the system capacity (MTCO 2e) as calculated pursuant 
to section 95353(f); 
(h) If in data year 2021 or any subsequent data year the calculated emissions limit is 
less than 50 MTCO 2e, the emissions limit shall be 50 MTCO 2e. 
(i) Combining of GIE Owners. Whenever multiple GIE owners combine to be under 
the same GIE owner, the GIE owner’s new emissions limit will be the sum of the 
emission limits that would have been established for each GIE owner had the GIE 
owners not combined. 
All GIE owners who have c ombined must notify CARB that the combination has 
occurred within 30 days of the effective date of the combination.  The notification 
must include the date of the combination, the names and ARB identification 
numbers (if assigned) of the GIE owners who com bined, the name of the new GIE 
owner following the combination, the emission limits previously assigned to each 
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 GIE owner, the new GIE owner’s emissions limit, the reason(s) for the change, a 
description of the relationship between the entities being combi ned (e.g., that they 
have a common parent organization) , and the appropriate attestation statement 
from section 95355( c). 
(j) Splitting of a GIE Owner. Whenever a GIE owner splits into multiple GIE owners, 
the emissions limit that would have been assigned to the original GIE owner must 
be split and assigned to the new GIE owners proportionally based on each new GIE owner’s equity share of the original system’s capacity at the time of the split, 
calculated pursuant to section 95354(a)(7)(B). 
All GIE owners who have split from a former GIE owner must notify CARB that the 
split has occurred within 30 days of the effective date of the split. The notification 
must include the date of the split, the name and ARB identification number (if 
assigned) of the GIE owner that split, the names of the new GIE owners following 
the split, the emissions limit previously assigned to the GIE owner that split, the new GIE owner’s Average CO
2e capacity i at the time of the split (prior to data year 
2025) or BL CO 2e Capacity i (for data year 2025 and later data years), the new GIE 
owner’s emissions limit, the reason(s) for the change, a description of the 
relationship between the entities being split (e.g., that they have a common parent organization but are independent limited liability companies) , and the appropriate 
attestation statement from section 95355( c). 
NOTE: Authority cited: Sections 38510, 38560, 38580, 39600 and 39601, Health and Safety Code. Reference: Sections 38560, 39600 and 39601, Health and Safety Code. 
§ 95354 . SF
6 Inventory Measurement and Insulating Gas Procedures. 
(a) GIS owners must do all of the following: 
(1) Establish and adhere to written procedures to track all gas containers as 
they are leaving and entering storage; 
(2) Weigh all gas containers on a scale that is certified by the manufacturer to 
be accurate to within one percent of the true weight; 
(3) Calibrate all scales used to measure quantities that are to be reported under this subarticle by: 
(A) Using calibrati on procedures specified by the scale m anufacturer; or 
(B) If a scale manufacturer has not specified calibration procedures, 
using: 1. A NIST traceable standard; and 
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 2. A published calibration method identified as appropriate for 
that scale by either the International Society of Weighing and Measurement or the National Conference on Weights and Measures. 
(4) Calibrate scales used to measure quantities reported under this subarticle prior to the first reporting year. 
(5) Recalibrate scales used to measure quantities reported under this subarticle at least annually, or at the minimum frequency specified by the 
manufacturer,  whichever is more frequent. 
(b) GIS owners must: 
(1) Establish and maintain a log of all measure ments required by this section; 
(2) Record the scale calibration methods used pursuant to this section; and 
(3) Retain all documents and records required by this sectio n for a minimum of 
three years. 
(a) GIE owners must establish and maintain a current and complete GIE inv entory for 
each data year, which includes the following information for each GIE device that 
uses covered insulating gas: 
(1) Equipment manufacturer name. 
(2) Year equipment was manufactured. 
(A) If the year the device was manufactured cannot be determined, 
report a best estimate of the year of manufacture and record how the 
estimated year was determined. 
(3) Manufacturer serial number. (A) For any GIE device whose serial number is unknown (e.g., the serial 
number does not exist, or is not visible ), another unique identifier 
must be recorded as the manufacturer serial number. The GIE owner 
must retain documentation that allows for each GIE device to be 
readily identifiable. 
(B) Whenever a GIE owner owns multiple GIE with identical serial numbers, unique identifiers must be recorded as the manufacturer serial number for each GIE device.  The GIE owner must retain documentation that allows for each GIE device to be readily 
identifiable. 
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 (4) Equipment type. 
(5) Equipment v oltage capacity (in kilovolts). 
(6) The name and GWP of each covered insulating gas used. 
(7) Whether the device is jointly owned with another GIE owner. 
(A) For each GIE device that is jointly owned, specify each co -owners’ 
name, ARB ID (if known), and equity share. 
(B) Whenever a value to be calculated under this subarticle must be 
divided between multiple GIE owners (such as, but not limited to, a situation involving the splitting of a GIE owner pursuant to section 
95353(j)), or to determine each GIE owner’s share of emissions or 
covered insulating gas at activation for a jointly owned GIE device, GIE owners must use the following formula to calculate their share of the value: 
𝐺𝐺𝐺𝐺𝐸𝐸 𝐶𝐶𝑂𝑂𝐸𝐸𝐴𝐴𝐴𝐴 𝑆𝑆ℎ𝐴𝐴𝐴𝐴𝐴𝐴 =(𝑇𝑇𝐸𝐸𝑐𝑐𝐴𝐴𝑇𝑇 ) ∗ (𝐸𝐸𝐸𝐸𝐸𝐸𝑐𝑐𝑐𝑐𝑐𝑐 𝑆𝑆ℎ𝐴𝐴𝐴𝐴𝐴𝐴) 
Where: 
“GIE Owner Share” is the GIE owner’s reportable share of a GIE 
device’s capacity or emissions; 
“Total ” is the total value being divided between GIE owners; and 
“Equity Share ” is the GIE owner’s equity share of the GIE device, 
expressed as a decimal value. 
(8) Nameplate capacity ( pounds) , as specified by the GIE manufacturer or as 
determined pursuant to section 95357. 2. 
(A) If using the nameplate capacity specified by the GIE manufacturer, 
the value must reflect the latest value specified by the manufacturer 
during the data year . 
(B) For each GIE device whose nameplate capacity was adjusted during 
the data year, the GIE owner must also record : 
1. The date the nameplate capacity adjustment process was 
completed, and 
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 2. The pressure reading of the GIE device five minutes after the 
blank -off pressure was achieved pursuant to section 
95357. 2(c)(5); the blank -off pressure for the GIE device; the 
blank -off pressure of the gas cart; and the unit s of pressure, 
which must be the same for all values recorded pursuant to this 
section . 
(C) In the event that the device was removed from regular use during the 
data year , but never underwent a nameplate capacity adjustment due 
to compromised integrity as specified in section 95357. 2(b)(3), record 
the manufacturer serial number of the device . 
(9) If the GIE device has been active GIE at some point during its ownership by 
the GIE owner but was not active GIE on December 31 of the data year, the last date when the GIE device was active GIE. 
(10) Seal type (hermetic or non-hermetic). 
(A) For non -hermetically sealed GIE: 
1. The number of days in the data year that the device was active 
GIE; 
2. For GIE acquired after December 31, 202 1, record the amount 
of covered insulating gas in the device at the time the device 
was acquired (pounds ), either per information provided by the 
manufacturer, or by transferring covered insulating gas from 
the GIE device to a gas container and measuring the amount of 
covered insulating gas transferred .  The GIE owner is 
responsible for ensuring the gas is accounted for consistent with the methodologies specified in section s 95354( b)(1), 
95354(b) (2), 95354(d)(1), or 95354(d)(2 ).  If no covered 
insulating gas was in the device when it was acquired, record this value as zero; 
3. For GIE acquired after December 31, 202 1, if covered 
insulating gas is added to the GIE device subsequent to the acquisition of the device to make it active GIE for the first time, record the following : 
a. The date(s) that covered insulat ing gas was added to the 
device, and 
b. The total amount of covered insulating gas added to the device, calculated per section 95354(b)(1 ) or 95354(b)(2) ; 
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   4. Whether the device was active GIE or not on January 1 of the 
data year (required beginning January 1, 202 2); 
5. Whether the device was active GIE or not on December 31 of the data year (requ ired beginning January 1, 2022 ); 
6. For GIE acquired after December 31, 202 1 and made active for 
the first time after De cember 31, 2021 , covered insulating gas 
at activation shall be calculated as the sum of the values 
recorded in sections 95354(a)(10)(A)2. and 95354(a)(10)(A)3.b. 
(pounds).  If no covered insulating gas was added to the GIE 
device per section 95354(a)(10)(A)3., covered insulating gas at activation shall be equal to the value recorded in section 
95354(a)(10)(A)2 .; 
7. Any of the following changes in operational status that occured 
during the data year : 
a. The GIE device b ecame active for the first time or after 
it was previously considered removed from regular us e 
pursuant to section 95354(c)(1) ; 
b. The GIE device was transferred while i n use to or from 
another entit y pursuant to section 95354(c)( 2); and/or 
c. The GIE device was removed from regular use pursuant 
to section 95354(c)(1) . 
8. Whether the GIE device was included in the calculation of BL 
CO
2e capacity 12/31/2024 (required for data year 2025 only) or BL 
CO 2e capacity 12/31/2024,y for data year i-1 (required beginning 
January 1, 2026) ; and 
9. For GIE removed from regular use during the data year and 
included in the calculation of BL CO 2e capacity 12/31/2024 (required 
for data year 2025 only) or BL CO 2e capacity 12/31/2024,y for data 
year i-1 (required beginning January 1, 2026), whether the GIE 
device was: 
a. Not r eplaced , or 
b. Replaced by a non -SF6 GIE device, or 
c. Replaced by an SF 6 GIE device acquired pursuant to 
section 95352(a)(1) . If the GIE device was so replaced, 
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 provide the manufacturer serial number of the 
replacement SF6 GIE device , or 
d. Replaced by an SF 6 GIE device not acquired pursuant to 
section 95352(a)(1) . If the GIE device was so replaced, 
provide the manufacturer serial number of the 
replacement SF 6 GIE devi ce. 
(B) For hermetically sealed GIE, whether the device was connected 
through busbars or cables to an electrical power system or not 
(required beginning January 1, 2022 ) on the following dates: 
1. January 1 of the data year ; and 
2. December 31 of the data year. 
(11) For GIE acquired after December 31, 202 1: 
(A) Date purchased and date acquired; 
(B) Short -circuit current rating (kA); and 
(C) Whether the device is or will be used above or below ground. 
(12) For SF 6-containing replacement parts installed during the data year on active 
SF6 GIE for which the phase- out date has already passed (required 
beginning January 1, 2025): 
(A) Name or description of the replacement part; 
(B) SF6 capacity of the replacement part (if available) ; and 
(C) Manufacturer’s serial number of the SF 6 GIE device. 
(13) For SF 6 GIE acquired after the applicable phase- out date, indicate the 
following: 
(A) If acquired pursuant to section 95352(a)(1), the SF 6 phase -out 
exemption request identification number , or that the device was 
acquire d in response to a failure pursuant to section 95357(i) or 
95357(j) . 
(B) If acquired pursuant to section 95352(a)(2), the name and ARB ID (if 
known) of the previous GIE owner. 
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    (C) If acquired pursuant to section 95352(a)(4), the manufacturer serial 
number pursuant to section 95354(a)(3) of the SF 6 GIE device that was 
returned to the manufacturer. 
(14) Whether the GIE device was no longer owned by the GIE owner on 
December 31 of the data year. 
(b) Beginning January 1, 202 2, for any GIE device that has never been in the GIE 
owner’s inventory as active GIE or that was accounted for in section 95354(c)(1) in a 
prior data year, and to which covered insulating gas must be added for it to 
become active GIE, GIE owners shall not add covered insulating gas to a GIE 
device prior to the data year in which it first becomes active GIE or becomes active 
GIE after being accounted for in section 95354(c)(1) .  The amount of covered 
insulating gas transferred to the GIE device (pounds) must be determined using 
either of the following methodologies and recorded. 
(1) Weigh the gas container being used to fill t he device prior to, and after, the 
addition of the covered insulating gas to the GIE device following the requirements of section 95354(e), and subtract the second value (after -
transfer gas container weight) from the first value (prior -to-transfer gas 
container  weight). 
(2) Connect a mass flow meter between the GIE device and a gas cart. Transfer 
gas to the GIE to reach the temperature -compensated design operating 
pressure per manufacturer specifications .  Close the connection to the GIE 
from the mass flow meter hose and ensure that the gas trapped in the filling hose returns through the mass flow meter. Calculate the amount of gas 
transferred from the mass reading on the mass flow meter. 
(c) Beginning January 1, 202 2, any GIE device that has been active GIE at some point 
during ownership by the GIE owner : 
(1) Shall be considered “removed from regular use” in section 95354.1(a) when 
covered insulating gas has been extracted pursuant to section 95354(d) after 
any of the followin g circumstances: 
(A) When the GIE device has not been active GIE f or five consecutive 
years ; 
(B) When the GIE device is taken out of active service for th e purpose of 
removing the device from a GIE owner’s inventory (e.g., to be disposed of, sold, t ransferred to a new GIE owner) ; or 
(C) When the GIE device has been inactive GIE for less than five consecutive years and is being removed from the GIE owner’ s 
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 inventory (e.g. , to be disposed of, sold, transferred to a new GIE 
owner). 
(2) Shall be considered “transferred while in use” in section 95354.1(a) when the GIE device is removed from a GIE owner’s inventory without being taken 
out of active service (e.g. , transferred to a new GIE owner while remaining in 
place and continuing operation). 
(d) Within one year of a GIE device meeting any of the specifications in sections 
95354(c)(1) (A) through 95354(c)( 1)(C) , covered insulating gas must be removed and 
accounted for. The amount of covered insulating gas transferred out of the GIE 
device (pounds) must be recorded by the GIE owner or by the manufacturer, 
contractor, or vendor that recovers the gas. The GIE owner is responsible for ensuring the gas is accounted for consistent with the methodologies specified in 
section 95354(d)(1) or (2) . 
(1) Weigh the gas container being used to receive the covered insulating gas 
from the device prior to, and after, recovery of the covered insulating gas 
from the GIE device following the requirements of section 95354(e), and 
subtract the first value (prior- to-transfer gas container weight) from the 
second value (after -transfer gas container weight). 
(2) Use a mass flow meter as described in section 95354(b)(2). 
(e) Whenever a gas container or gas cart is required to be weighed, weigh the gas 
container or gas cart on a scale that is certified by the manufacturer to be accurate 
to within one percent of the true weight. 
(f) The following accuracy requirements apply to equipment used to determine values required to be recorded under this subarticle: 
(1) Flow meters must be certified by the manufacturer to be accurate to within 
one percent of the largest value that the flow meter can, according to the 
manufacturer's specifications, accurately record . 
(2) Pressure gauges must be certified by the manufacturer to be accurate within 
0.5% of the largest value that the gauge can, according to the 
manufacturer’s specifications, accurately record. 
(3) Temperature gauges must be certified by the manufacturer to be accurate 
within +/ -1.0° F. 
(4) Gas carts used to perform nameplate capacity adjustments must be capable 
of recovering gas from the GIE device to the maximum achievable blank -off 
pressure specified by the GIE manufacturer . 
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 (g) GIE owners must weigh covered gas containers at the points in time set forth in 
sections 95354( g)(1)(A) -(B) and 95354( g)(2). Each time a container is weighed, 
record the date, the amount of covered insulating gas in the container (pounds), and the reason why the container was weighed (end of calendar year weighing, added to inventory, removed from inventory). 
(1) For each covered gas container owned by or stored on the property of the 
GIE owner, all of which make up the GIE owner’s gas container inventory, weigh the gas conta iner at the following times: 
(A) The end of the calendar year.  To determine this value, containers must be weighed on or between December 1 of the data year and 
January 15 of the next data year.  The container may only be weighed in January of the next d ata year if it was not used between December 
31 of the data year and the date the container is weighed. 
(B) Whenever the covered gas container is added to, or removed from, the GIE owner’s gas container inventory. 
(2) For covered gas containers that are neither owned by nor stored on the 
property of the GIE owner, weigh the gas container both immediately before and immediately after use at any of the GIE owner’s facilities for the purpose of adding or removing insulating gas to or from GIE, a gas cart, or 
another container following the requirements of section 95354(e). 
(3) To determine the amount of covered insulating gas in the ga s container, 
weigh the gas container (along with it s contents) , and subtract the tare 
weight of the container. 
(h) GIE owners must establish and maintain a current and complete inventory of all 
covered gas containers and gas carts that contain covered insulating gas. The 
inventory must include the following information for each covered gas container and gas cart: 
(1) For gas containers, w hether it is required to be weighed pursuant to section 
95354( g)(1) or 95354( g)(2), and for gas carts, whether the amount of gas 
within the cart is determined pursuant to section 95354(j)(2)-( 3) or 
95354(j)(4) . 
(2) A unique identification number. 
(3) The name and GWP of each covered insulating gas used. 
(4) For gas containers, information required to be recorded pursuant to section 
95354( g), and for gas carts, information required to be recorded pursuant to 
section 95354(j) . 
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  (5) The amount of covered insulating gas in the container or gas cart (pounds) 
at the beginning of the data year.  This value must be identical to the value reported for the end of the prior data year pursuant to section 95354( g)(1)(A ) or 95354( j)(2). 
(i) Transfers of covered insulating gas.  Each time covered insulating gas is transferred 
into or out of a GIE device, GIE owners must record: 
(1) The manufacturer serial number pursuant to section 95354(a)(3); 
(2) The gas co ntainer’s unique identification number; 
(3) Whether the covered insulating gas was transferred into or out of the GIE 
device; 
(4) The date of the transfer ; and 
(5) The type of covered insulating gas. 
(j) Gas Carts. GIE owners must do the following for all gas carts owned by or stored 
on the property of the GIE owner that contain covered insulating gas: 
(1) By January 1, 202 2, the GIE owner must determine whether they will 
account for covered insulating gas in each gas cart using the “container 
method” following the requirements of section 95354( j)(2)(A), the “scale 
method” following the requirements of section 95354( j)(2)(B) , or the “mass 
flow meter method” follow ing the requirements of section 95354(j)(2)(C) and 
must , for each gas cart, use the method selected for all subsequent 
measurements of the amount of covered insulating gas in that gas cart 
pursuant to section 95354( j)(2)-(3).  Whenever a GIE owner acquires a gas 
cart after December 31, 202 1, they must select the methodology they will 
use at the time the gas cart is acquired. 
(2) For each gas cart owned by or stored on the property of the GIE owner on December 31 of the data year, the amount of covered insulating gas within 
the gas cart at the end of the calendar year must be determined during the 
timeframe established in sect ion 95354(g)(1)(A) using the methodology 
selected pursuant to section 95354(j)(1) : 
(A) Container method. Transfer insulat ing gas from the gas cart to a 
covered gas container(s) until the gas cart reaches the pressure 
specified by the GIE owner in section 95354(j)(2)(D). Weigh the gas 
container(s) before and after the transfer and determin e the weight of 
the covered insulating gas in the gas cart by subtracting the first 
recorded value from the second ; 
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   (B) Scale method. Determine the amount of gas stored in the gas cart by 
weighing the gas cart itself , and subtracting the tare weight, following 
the procedures in section 95354(g)(3) ; or 
(C) Mass flow meter method . Connec t a mass flow meter between the 
gas cart and a container or another gas cart and recover gas until the 
pressure  specified by the GIE owner in section 95354(j)(2)(D) is 
reached , then determine the amount of gas transferred fr om the mass 
reading on the mass flow meter. 
(D) GIE owners using the container method or mass flow meter method 
must , for each gas cart, specify by January 1, 2022 or the date the gas 
cart is acquired, the pressure at which the cart is empty according to 
manufacturer specifications , and bring the cart to that pressure every 
time they account for covered insulating gas in that gas cart. 
(E) GIE owners must not include gas accounted for pursuant to section 
95354(j)(2) in any measurements made pursuant to section 95354(g) (1) or (2). 
(3) Whenever a gas cart is added to, o r removed from, the GIE owner’s 
inventory, the amount of covered insulating gas within the gas cart must be 
determined using the method selected pursuant to section 95354(j)(1) . 
(4) Each time a gas cart that is neither owned by nor stored on the property of the GIE owner is brought onto or removed from the property of the GIE owner, the GIE owner must : 
(A) Follow the procedures of section 95354( j)(2)(A) ; 
(B) Follow the procedures of section 95354( j)(2)(B ); or 
(C) Follow the procedures of section 95354( j)(2)(C). 
(k) GIE owners must establish and adhere to written procedures to track all covered gas containers included in the inventory compiled pursuant to section 95354( h).  
The GIE owner must review the procedures annually and revise them as needed to 
ensure the information is current and the requirements of sections 95354(e)-(j) are 
met. 
(l) Calibration. GIE owners must: 
(1) Prior to a scale’s initial use to measure quantities reported under this 
subarticle, the scale must be calibrated according to the calibrati on 
procedures specified by the scale manufacturer. If a scale manufactu rer has 
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 not specified calibration procedures, use NIST -traceable standards and a 
published calibration method identified as appropriate for that scale by 
either the International Society of Weighing and Measurement or the National Conference on Weights and Measures. 
(2) Recalibrate scales used to measure quantities reported under this subarticle every three years, or at the minimum frequency specified by the manufacturer, whichever is more frequent.  If a scale manufacturer has not 
specified calibration procedures, use NI ST-traceable standards and a 
published calibration method identified as appropriate for that scale by 
either the International Society of Weighing and Measurement or the 
National Conference on Weights and Measures. 
(3) Prior to a mass flow meter’s initial use to measure quantities reported under 
this subarticle, the flow meter must be calibrated according to the 
calibration procedures specified by the manufacturer. If a mass flow meter 
manufacturer has not specified calibration procedures, use NIST -tracea ble 
standards and an appropriate flow meter calibration method published by a consensus- based standards organization. 
(4) Recalibrate mass flow meters , pressure gauges, and temperature gauges 
used to measure quantities repo rted under this subarticle at the minimum 
frequency specified by the manufacturer. 
(5) Establish and maintain a log of all measurements and calibrations required by section s 95354(l )(1)-(4), including a description of all methods used to 
calibrate the scale or flow meter, providing sufficient detail to establish that 
the method complies with the r equirements of sections 95354( l)(1)-(4). 
(m) Gas Blends . Whenever covered insulating gas that is a constituent of a gas blend 
must be quantified, use the following equation to calculate the amount of covered insulating gas to be reported (pounds) and record the values of the inputs used : 
𝐶𝐶𝐸𝐸𝐴𝐴𝐴𝐴𝐴𝐴𝐴𝐴𝑑𝑑 𝐺𝐺𝐸𝐸𝐸𝐸𝐸𝐸𝑇𝑇𝐴𝐴𝑐𝑐𝑐𝑐𝐸𝐸𝐴𝐴 𝐺𝐺𝐴𝐴𝐸𝐸 =(𝐺𝐺𝐸𝐸𝐸𝐸𝐸𝐸𝑇𝑇𝐴𝐴𝑐𝑐𝑐𝑐𝐸𝐸𝐴𝐴 𝐺𝐺𝐴𝐴𝐸𝐸 ) ∗ (𝑀𝑀𝐴𝐴𝐸𝐸𝐸𝐸 𝑆𝑆ℎ𝐴𝐴𝐴𝐴𝐴𝐴) 
Where 
“Covered Insulating Gas” is the amount of covered insulating gas required to be 
reported (pounds); 
“Insulating Gas” is the total amount of insulating gas (pounds) in the gas blend of 
which the covered insulating gas is a constituent member; and “Mass Share” is the ratio of the mass of covered insulating gas relative to the total 
amount of insulating gas expressed as a decimal value. 
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 NOTE: Authority cited: Sections 38510, 38560, 38580, 39600 and 39601, Health and 
Safety Code. Reference: Sections 38560, 38562, 38580, 39600 and 39601, Health and 
Safety Code. 
§ 95354.1. Calculating Annual Emissions. 
(a) Annual Emissions by Covered Insulating Gas . For each covered insulating gas j 
emitted during data year i, GIE owners must use the following equation to 
calculate and report th eir annual emissions (pounds): 
Annual Emissions j,i = (Decrease in covered insulating gas j inventory) + (Acquisitions 
of covered insulating gas j) − (Disbursements of covered insulating gas j) − (Net 
increase in total capacity of active GIE owned and filled with covered insulating gas 
j). 
Where all of the following values are measured in pounds of gas for data year i: 
Decrease in covered insulating gas j inventory = (covered insulating gas j stored in 
gas containers and gas carts included in the gas container inventory, but not GIE, 
at the beginning of d ata year i) -(covered insulating gas j stored in gas containers 
and gas carts included in the gas container inventory, but not GIE, at the end of 
the data year); 
Acquisitions of covered insulating gas j = (covered insulating gas j obtained in bulk 
during the data year (e.g., in gas containers or gas carts) from chemical producers, 
distributors, or other entities) + (covered insulating gas j inside GIE when acquired 
by the GIE owner, for any GIE that became active GIE for the first time during the 
data yea r) + (covered insulating gas j at activation for active GIE transferred while 
in use from another entity during the data year pursuant to section 95354(c)(2)) + 
(covered insulating gas j returned to site during the data year (e.g., in gas 
containers or gas carts) after off -site recycling ); 
Disbursements of covered insulating gas j = (covered insulating gas j at activation 
for active GIE transferred while in use to another entity during the data year 
pursuant to section 95354(c)(2)) + (cove red insulating gas j returned to suppliers 
(e.g., in gas containers or gas carts ) during the data year) + (covered insulating gas 
j sent off site for recycling in gas containers or gas carts during the data year) + 
(covered insulating gas j sent to destruction facilities in gas containers or gas carts 
during the data year) + (covered insulating gas j sent to other entities) ; and 
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 Net increase in total capacity of active GIE owned and filled with covered insulating 
gas j = (covered insulating gas j at activation for GIE whose status changed to 
active GIE for the first time during the data year or after being considered removed 
from regular use during the data year pursuant to section 95354(c)(1) ) -(covered 
insulating gas j at activation for GIE removed from regular use during the data year 
pursuant to section 95354(c) (1)) – (covered insulating gas j at activation for active 
GIE transferred while in use to another entity during the data year pursuant to 
section 95354(c)(2) ) + (covered insulating gas j at activation for active GIE 
transferred while in use from another entity during the data year pursuant to 
section 95354(c)(2)) . 
When accounting for emissions associated with GIE that are jointly owned by multiple GIE owners, each joint GIE owner must apply its equity share of the 
relevant GIE when calculating annual emissions, pursuant to section 95354(a)(7)(B). 
(b) CO
2e emissions. GIE owners must use the following equation to calculate their 
covered insulating gas emissions (MTCO 2e) for data year i: 
𝑛𝑛 𝐺𝐺𝐺𝐺𝐺𝐺𝑗𝑗 ∗ 𝐸𝐸𝐸𝐸𝑐𝑐𝐸𝐸𝐸𝐸𝑐𝑐𝐸𝐸𝐸𝐸𝐸𝐸 𝑗𝑗,𝑖𝑖 𝐶𝐶𝐶𝐶2𝐴𝐴 𝐴𝐴𝐸𝐸𝑐𝑐𝐸𝐸𝐸𝐸𝑐𝑐𝐸𝐸𝐸𝐸𝐸𝐸 𝑖𝑖 = � 2204 .62 
𝑗𝑗 
Where: 
“CO 2e emissions i” is the GIE owner’s total covered insulating gas emissions 
(MTCO 2e) in data year i; 
“n” is the number of covered insulating gases j; 
“GWP j” is the global warming potential of covered insulating gas j ; 
“Emissions j,i” is the annual emissions (pounds) of covered insulating gas j in data 
year i; and 
“2204.62” is the number of pounds in a metric ton. 
(c) CO 2e Emissions Excluding Emergency Events. GIE owners must use the following 
equation to calculate their covered insulating gas emissions in MTCO 2e excluding 
emergency events approved by CARB pursuant to section 95357.1: 
𝑛𝑛 𝐺𝐺𝐺𝐺𝐺𝐺𝑗𝑗 ∗ 𝐸𝐸. 𝐸𝐸. 𝐸𝐸𝐸𝐸𝑐𝑐𝐸𝐸𝐸𝐸𝑐𝑐𝐸𝐸𝐸𝐸𝐸𝐸 𝑗𝑗,𝑖𝑖 𝐶𝐶𝐶𝐶2𝐴𝐴 𝐴𝐴𝐸𝐸𝑐𝑐𝐸𝐸𝐸𝐸𝑐𝑐𝐸𝐸𝐸𝐸𝐸𝐸 𝐴𝐴𝑒𝑒𝑐𝑐𝑇𝑇𝐸𝐸𝑑𝑑𝑐𝑐𝐸𝐸𝐴𝐴 𝐸𝐸. 𝐸𝐸.𝑖𝑖 = 𝐶𝐶𝐶𝐶2𝐴𝐴 𝐴𝐴𝐸𝐸𝑐𝑐𝐸𝐸𝐸𝐸𝑐𝑐𝐸𝐸𝐸𝐸𝐸𝐸 𝑖𝑖 − � 2204 .62 
𝑗𝑗 
Where: 
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 “CO 2e emissions excluding E.E. i” is the GIE owner’s total covered insulating gas 
emissions (MTCO 2e) in data year i, excluding emissions from emergency events for 
which the Executive Officer approved an exemption (also in MTCO 2e) for data year 
i; 
“n” is the number of covered insulating gases j; 
“GWP j” is the global warming potential of covered insula ting gas j released during 
one or more emergency events; “E.E. Emissions
j,i” is the annual emissions of gas j (pounds) from all emergency 
event exemptions approved by the Executive Officer during data year i; and 
“2204.62” is the number of pounds in a metric ton. 
(d) For data year 202 1, GIE owners must calculate the values required by section 
95354.1(a) -(c) for SF6 only. 
(e) For data year 202 2 and all subsequent data years, GIE owners must calculate the 
values required by section 95354.1(a) -(c) for each covered insulating gas in their 
GIE, gas containers, and/or gas carts during the data year. 
NOTE: Authority cited: Sections 38510, 38560, 38580, 39600 and 39601, Health and 
Safety Code. Reference: Sections 38560, 39600 and 39601, Health and Safety Code. 
§ 95355. Recordkeeping. 
GIS owners must: 
(a) Establish and maintain a current and complete GIS equipment inventory, 
which includes the following information for each piece of equipment: 
(1) Manufacturer serial number; 
(2) Equipment type (e.g., circuit breaker, transformer, etc); 
(3) Seal type (hermetic or non-hermetic); 
(4) Equipment manufacturer name; 
(5) Date equipment was manufactured; 
(6) Equipment voltage capacity (in kilovolts); 
(7) Equipment SF 6 nameplate capacity (charge in pounds); 
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 (8) A chronological record of the dates on which SF 6 was transferred into 
or out of active GIS equipment; 
(9) The amount, in pounds, of SF 6 transferred into or out of the active 
GIS equipment; 
(10) Equipment status (active or inactive); and 
(11) Equipment location: 
(A) The physical address for each piece of equipment must be 
listed; and 
(B) Complete records must be kept of changes to the equipment inventory and the dates the changes occurred (such as installation 
of new equipment, removal of equipment, and disposition of the equipment (e.g., sold, returned to manufacturer, etc.)). 
(b) Establish and maintain a current and complete inventory of gas containers, 
which includes the following information for each container: 
(1) A unique identification number; 
(2) Size; 
(3) Location; 
(4) The weight, in pounds, of SF
6 in each container at the end of each 
calendar year, and when gas containers are added or removed from inventory. 
(c) Retain SF
6 gas and equipment purchase documentation (such as contracts, material 
invoices, receipts, etc.); 
(d) Retain all records required by this subarticle for a minimum of three calendar years; 
(1) GIS owners headquartered in California must retain all records at a location 
within California; 
(2) GIS owners headquartered in other states may retain all records at a location 
in California or at their business offices nearest to California; 
(e) Have all records available for ARB inspection at time of inspection; and 
(f) Upon request by ARB, provide these records to the Executive Officer. 
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 NOTE: Authority cited: Sections 38510, 38560, 39600 and 39601, Health and Safety 
Code.  Reference: Sections 38562, 38580, 39600 and 39601, Health and Safety Code. 
§ 95355. Reporting Requirements . 
(a) Annual Reporting. By June 1 of each year, any person who was a GIE owner at any 
point during the previous calendar year must submit an annual GHG emissions data 
report to the Executive Officer for the previous calendar year.  A single annual 
GHG emissions data report containing the i nformation required by this section 
must be submitted by each GIE owner regardless of whether the GIE owner’s GIE 
are located in a single physical location or multiple non- contiguous locations within 
California.  Annual reports must contain all of the foll owing information: 
(1) GIE owner’s name, ARB identification number (if assigned), telephone 
number, and the physical address and mailing address of the GIE owner’s headquarters; 
(2) Location in California of records and documents maintained pursuant to this 
subsection, if the location is different from the GIE owner’s physical address; 
(3) Name, official title, email address, telephone number, and mailing address of 
the designated representative; 
(4) The data year for which the information is submitted; 
(5) The information required to be recorded pursuant to sections 95354(a), (d), 
(h), and ( m); 
(6) For each GIE device for which the GIE owner claims an early action credit 
pursuant to section 95353(d), report: 
(A) Data elements described in section 95354(a)(1), (3)-(7)(A), and (11); 
(B) The date the device became active GIE for the first time; 
(C) Medium that provides insulating and/or interrupting (arc quenching) 
functions; and 
(D) Whether during the data year the GIE device was r emoved from 
regular use pursuant to section 95354(c)(1) or transferred while in use 
pursuant to section 95354(c)(2). 
(7) The following information related to emissions: 
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   (A) Average system capacity ( Cavg,j,i) (pounds), as calculated pursuant to 
section 95353(b) for each covered insulating gas required to b e 
reported during the data year; 
(B) Average CO 2e capacity i (MTCO 2e), as calculated pursuant to section 
95353(c); 
(C) Early Action Credit (EAC i) (MTCO 2e), as calculat ed pursuant to section 
95353(d) , and EAC ≤10 pursuant to section 95353(f) ; 
(D) BL CO 2e capacity 12/31/2024,i (MTCO 2e) and BL CO 2e capacity i (MTCO 2e) 
as calculated pursuant to section 95353(e) (1) and (f), r espectively (for 
data years 2025 and beyond) ; 
1. BL CO 2e capacity 12/31/2024 (for data year 2025 only); 
(E) The GIE owner’s Emissions Limit i (MTCO 2e) for the data year, as 
calculated pursuant to sections 95353(g) or (h); 
(F) Annual Emissions j,i (pounds) for each covered insulating gas and the 
values used for all the terms listed in sectio n 95354.1(a); 
(G) CO 2e emissions i (MTCO 2e) as calculated pursuant to section 
95354.1(b); 
(H) E.E. Emissions j,i (pounds), GWP of covered insulating gas(es), and type 
of covered insulating gas(es) associated with each emergency event 
exemption approved by the Executive Officer pursuant to section 
95357.1 for the data year; and 
(I) CO 2e emissions excluding E.E. i (MTCO 2e) as calculated pursuant to 
section 95354.1(c). 
(8) Documentation submitted per sections 95353(i) or 95353(j) for any GIE owners combining or splitting during the data year ; and 
(9) The appropriate attestation statement from section 95355( c). 
(b) Submission Process. The annual GHG emissions data report shall be submitted to 
the Executive Officer as follows: 
(1) GIE owners subject to this regulation that own, are owned by, have previously owned, or have previously been owned by an entity subject to the requirements of title 17, California Code of Regulations, section 95100 et 
seq. shall use the California Electronic Greenhouse Gas Reporting Tool (Cal 
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 e-GGRT) or another mechanism specified in title 17, California Code of 
Regulations, section 95104(e). 
(2) GIE owners not subject to the requirements of title 17, California Code of 
Regulations, section 95100 et seq ., may either: 
(A) Use Cal e -GGRT, or other mechanism as specified in title 17, 
California Code of Regulations, section 95104(e); or 
(B) Submit reports to CARB through electronic mail. 
(c) Attestations. Any statements and/or information, including the annual report, 
submitted to CARB pursuant to this regulation must include the appropriate attestation statement specified in subsection (c )(1) or (c )(2), signed by the 
designated representative, under pena lty of perjury. 
(1) If the information is submitted using Cal e- GGRT, the attestation must state 
“By submitting my electronic signature via the California Air Resources 
Board's Greenhouse Gas Reporting Tool, I hereby certify that I am authorized to make this submission on behalf of the gas- insulated 
equipment owner for which the submission is made.  I certify under penalty of law that I have personally examined, and am familiar with, the statements 
and information in this report submitted pursuant to title 17, California Code 
of Regulations, sections 95350- 95359.1 .  Based on my inquiry of those 
individuals with primary responsibility for obtaining the information, I certify 
that the statements and information are to the best of my knowledge and belief, true, accurate, and complete.  I am aware that there are significant 
penalties for submitting false statements and information or omitting 
required statements and information, including the possibility of fine.” 
(2) If the information is not submitted using C al e-GGRT, the GIE owner must 
sign, date and submit the following attestation to CARB.  The attestation 
must state “ I hereby certify that I am authorized to make this submission on 
behalf of the gas- insulated equipment owner for which the submission is 
made. I certify under penalty of law that I have personally examined, and 
am familiar with, the statements and information in this report or information submitted pursuant to title 17, California Code of Regulations, sections 
95350- 95359 .1.  Based on my inqu iry of those individuals with primary 
responsibility for obtaining the information, I certify that the statements and 
information are, to the best of my knowledge and belief, true, accurate, and complete.  I am aware that there are significant penalties fo r submitting false 
statements and information or omitting required statements and 
information, including the possibility of fine.” 
(d) Designated Representative. Within 30 days of the designated representative of a 
GIE owner being relieved of their duties, the GIE owner must appoint a new 
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  designated representative and notify CARB of the change.  The notification must 
include the name, official title, mailing addr ess, phone number, and email address 
of the new designated representative.  A GIE owner who submitted their prior annual report using Cal e- GGRT must update the name and contact information of 
the designated representative in Cal e- GRRT to meet this requir ement. 
(e) Retirement and Changes in Ownership. Any GIE owner who permanently 
relinquishes ownership of all GIE that uses any covered insulating gas must notify CARB that they are no longer subject to this subarticle within 30 days of the date 
the GIE were relinquished.  The notification must contain the following information: 
(1) GIE owner name, phone number, and physical address; 
(2) Designated representative’s name, official title, mailing address, phone 
number, and email address; 
(3) The final date that the entity was a GIE owner; 
(4) The method by which the GIE were relinquished. Specifically, the GIE owner must indicate whether the GIE were sold, transferred, disposed of, or other. 
“Other” may only be reported if the GIE were not relinquished b y way of 
sale, transfer, or disposal. 
(A) If the method is reported as “other,” report the method. 
(B) If the method is reported as “sold” or “transferred,” report the name 
of the entity(s) to which the GIE were sold or transferred to. 
1. Any entity not previously subjec t to this section that receives 
any of these GIE becomes a GIE owner subject to this section. 
The new GIE owner must notify CARB of the ownership 
change. The notification must include the name of the previous 
GIE owner, the name of the new GIE owner, the date of the 
change in ownership and the name, of ficial title, mailing 
address, phone number and email address of the new 
designated representative. 
2. If the previous GIE owner submitted the most recent annual 
report using Cal e- GGRT, the GIE owner must submit all future 
reports through Cal e -GGRT.  The new GIE owner must 
register in Cal e-GGRT within 30 days of the change o f 
ownership. 
(C) If the method is reported as “disposed of,” report the location(s) 
where the GIE were disposed of, either expressed as a physical street 
address or latitude and longitude.  Whenever GIE are transferred to a 
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 third party who would then be responsible for disposal, the GIE 
owner should follow the requirements of section 95355( e)(4)(B). 
(5) The appropriate attestation statement from section 95355( c). 
NOTE: Authority cited: Sections 38510, 38560, 38580, 39600 and 39601, Health and 
Safety Code. Reference: Secti ons 38560, 39600 and 39601, Health and Safety Code. 
§ 95356. Annual Reporting Requirements. 
(a) By June 1, 2012, and June 1st of each year thereafter, each GIS owner must submit 
an annual report to the Executive Officer for emissions that occurred during the previous calendar year. 
(b) The annual report must contain al l of the following information: 
(1) Reporting entity name, physica l address, and mailing address; 
(2) Location of records and documents maintained in California if different from the repor ting entity’s physical address. 
(3) Name and contact information including e -mail address and telephone 
number of the person submitting the report, and the person primarily responsible for preparing the report; 
(4) The year for whic h the information is submitted; 
(5) A signed and dated statement provided by the appropriate responsible official that the information has been pre pared in accordance with this 
subarticle, and that the statements and information contained in the submitted emission data ar e true, accurate, and complete. 
(6) Annual SF
6 emissions as calculated using the equation spec ified in 
subsection (d), b elow; 
(7) Annual SF 6 emission rate as calculated using the equation spec ified in 
subsection (e), below; 
(8) A gas insulated switchgear inventory report containi ng the information 
required by s ection 95355, subsecti ons (a)(1) through (a)(10); and 
(9) A gas container inventory report containing the information required by section 95355, subsections (b)(1) through (b)(4). 
(c) The annual report shall be submitted to the Executive Officer as follows: 
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 (1) GIS owners subject to the requirements of title 17, California Code of 
Regulations, section 95100 et seq. , shall use the ARB Greenhouse Gas 
Reporting Tool or other mechanism, as specified in title 17, California Code of Regulations, section 95104. 
(2) GIS owners not subject to the requirements of title 17, California Code of Regulations, section 95100 et seq. , may either: 
(A) Use the ARB’s Greenhouse Gas Reporting tool, or other mechanism, as specified in title 17, California Code of Regulations, section 95104; or 
(B) Submit reports in writing to ARB through the US Postal Service, electronic mail or by personal delivery. 
(d) Annual SF
6 Emissions . GIS owners must use the following equation to 
determine their SF 6 emissions: 
Equation for determining annual SF 6 emissions: 
User Emissions = (Decrease in SF 6 inventory) + (Acquisitions of SF 6) – 
(Disbursements of SF 6) − (Net increase in total nameplate capacity of 
active GIS equipment owned). 
Where: 
Decrease in SF 6 inventory = (SF 6 stored in containers, but not in 
equipment,  at the beginning of the year) -(SF 6 stored in containers, 
but not in equipment, at the end of the year). 
Acquisitions of SF 6 = (SF 6 purchased in bulk from chemical producers, 
distributors, or other entities) + (SF 6 purchased from equipment 
manufacturers, distributors, or other entities with or inside active GIS 
equipment) + (SF 6 returned to site after off -site recycling). 
Disbursements of SF 6 = (SF 6 in bulk and contained in active GIS 
equipment that is sold to other entities) + (SF 6 returned to suppliers) 
+(SF 6 sent off site for recycling) + (SF 6 sent to destruction facilities). 
Net increase in total nameplate capacity of active GIS equipment owned 
= (The nameplate capacity of new active GIS equipment) -(Nameplate 
capacity of retiring active GIS equipment). 
(e) Annual SF 6 Emission Rate. GIS owners shall use the following equations to 
determine their SF 6 emission rate. 
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 Equation for determining emissions rate: 
ER = Emissions 
Cavg 
Where: ER = Emission Rate 
Emissions = Annual emissions per subsection (d) (lbs) 
Cavg = Average system nameplate capacity as 
expressed in the equation below (lbs) 
𝐶𝐶𝑎𝑎𝑎𝑎𝑎𝑎 = 𝑛𝑛 (𝑑𝑑𝑖𝑖𝐶𝐶𝑖𝑖)� 365 
𝑖𝑖=1 
Where: Cavg = The average system nameplate 
capacity (lbs) 
N = The number of GIS devices 
di = The number of days during the year 
the GIS device was in active service 
Ci = The nameplate capacity (lbs) of the GIS 
device 
NOTE: Authority cited: Sections 38510, 38560, 38580, 39600 and 39601, Health and 
Safety Code. Reference: Sections 38560, 39600 and 39601, Health and Safety Code. 
§  95356 .  Recordkeeping. 
(a) GIE owners must retain the following records for the time per iod specified by 
section 95356(b) and, upon request by CARB, provide these records to CARB staff 
within 30 days of the request: 
(1) All data, measurements, and documentation required pursuant to section 
95354; 
(2) All data required to be reported pursuant to section 95355; 
(3) The location, either expressed as a physical address or a latitude and longitude, of each device included in the GIE inventory and each covered gas container and gas cart included in the inventory of containers reported pursuant to section 95354(a) and ( h); 
(4) Documentation regarding the purchase and acquisition of any covered insulating gas and/or GIE (including but not limited to, contracts, material 
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 invoices, manufacturer warranties, and receipts), including any information 
used to justify the acquisition of SF 6 GIE after the phase- out date pursuant 
to section 95352(a)(2) -(4); 
(5) All information used to determine the values included in the calculations in 
sections 95353(b) -(g), (i), and (j); 
(6) All notifications sent to CARB pursuant to this subarticle, and any associated 
correspondence with CARB; 
(7) All SF 6 phase -out exemption requests, notifications of failures, and 
notifications of SF6 GIE acquired in response to failures submitted to the 
Executive Officer pursuant to section 95357, any associated correspondence with CARB, and any information and documentation that the GIE owner uses as justification for the exemption in the request(s) , including bids received 
pursuant to section 95 357(l) ; 
(8) All requests sent to the Executive Officer for emergency event exemptions pursuant to section 95357.1, any associated correspondence with CARB, and any documentation that the GIE owner uses as justification in the 
request(s); 
(9) Documentatio n that allows for each GIE device included in the GIE inventory 
pursuant to section 95354(a) that has a serial number that is identical to the 
serial number of any other GIE device to be readily identified by the 
manufacturer serial number reported to CARB pursuant to section 
95354(a) (3); 
(10) All documentation that supports and/or explains any revisions to previously submitted annual reports; 
(11) The method by which the amount of covered insulating gas in each gas cart will be determined, and for GIE ow ners who elect to use either the “mass 
flow meter method,” or the “container method,” as specified in sections 
95354(j)(2)(C) and (A) respectively , the pressure that the gas cart will be 
brought to prior to measurement; 
(12) The tare weight of each gas container , which must be the same every year; 
(13) Any written safety or reliability requirements cited in SF
6 phase -out 
exemption requests pursuant to section 95357(d)(8)(D ); and 
(14) For GIE owners that elect to perform nameplate capacity adjustments pursuant to section 95357. 2: 
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 (A) All documentation submitted to the Executive Officer pursuant to section 95357. 2, and any associated correspondence with CARB; 
(B) All data and measurements required to be recorded pursuant to section 95357. 2; 
(C) Manufacturer temperature/pressure curves or other manufacturer-provided materials used to convert the initial system pressure to a 
temperature compensated initial system pressure for each GIE device 
subject to nameplate capacity adjustments pursuant to section 
95357. 2; and 
(D) Supporting documentation to demonstrate that the GIE device had 
compromised integrity, f or any GIE device listed pursuant to section 
95357. 2(a)(1)(C) that was removed from regular use during the data 
year but for which a revised nameplate capacity was not determined 
pursuant to section 95357. 2(b)(3). 
(b) Retain all records required by this subarticle for a minimum of five calendar years; 
(1) GIE owners headquartered in California must retain all records at a location within California; 
(2) GIE owners headquartered elsewhere must retain all records at a location in 
California or at their business offices nearest to California; 
(3) Records required by this subarticle that were generated prior to January 1, 
2022 are required to be retained for a minimum of three calendar years. 
NOTE: Authority cited: Sections 38510, 38560, 38580, 39600 and 39601, Health and 
Safety Code. Reference: Sections 38560, 39600 and 39601, Health and Safety 
Code. 
§ 95357 95358.  Treatme nt of Confidential Information. 
Information submitted pursuant to this subarticle may be claimed as confidential.  Such information shall be handled in accordance with the procedures specified in title 17, 
California Code of Regulations, sections 91000 through 91022. 
NOTE: Authority cited: Sections 38510, 38560, 38580, 39600, 39601 and 41511, 
Health and Safety Code. Reference: Sections 38560, 38562, 38580, 39600, and39601, 
and 41511, Health and Safety Code. 
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 § 95357.  SF 6 Phase- Out Exemption and Failure Notification. 
(a) Pursuant to section 95352(a)(1), a GIE owner who wishes to acquire SF 6 GIE after 
the applicable phase- out date indicated in Table 1 or Table 2 of section 95352 
must electronically submit a n SF6 phase- out exemption request to the Executive 
Officer that, if approved, would allow the GIE owner to acquire the requested SF 6 
GIE unless there is a failure as defined in section 95351(a) . In the event of a failure, 
the GIE owner may acquire SF 6 GIE purs uant to section 95357(i) or (j ). 
(b) Beginning September 1, 2024, a GIE owner may submit a n SF6 phase- out 
exemption request if, based on bids received pursuant to section 95357(l) , either: 
(1) Non-SF6 GIE of the equipment type and GIE characteristics necessary for the 
particular project(s) or application(s) are unavailable from at least two 
suppliers; or 
(2) Available non -SF6 GIE cannot meet the size requirements for the particular 
project(s) o r application(s), taking into consideration the physical size of the 
GIE, the physical constraints of the project location(s), including required 
clearance; or 
(3) Available non -SF6 GIE cannot be used for the specific project(s) or 
application(s) due to i ncompatibility with existing equipment, wiring, or 
connectors; or 
(4) Available non -SF6 GIE cannot meet required technical specifications and/or 
are not suitable based on the GIE owner’s documented safety or reliability 
requirements. 
(c) Whenever a GIE owner wishes to acquire multiple SF 6 GIE of the same equipment 
type and GIE characteristics, for which the justification provided under section 
95357(d)(8) is identical, the GIE owner may submit a single request to cover all 
associated SF 6 GIE.  In this case, the GIE owner must specify the number of SF 6 GIE 
it is requesting to acquire under the exemption and list the locations where the SF 6 
GIE would be installed, but does not need to identify which specific SF 6 GIE device 
would be installed at each location. 
(d) The SF 6 phase -out exemption request must contain the following: 
(1) GIE owner’s name and ARB identification number (if assigned); 
(2) Designated representative’s name, official title, mailing address, phone number , and email address; 
(3) Whether or not the requested GIE would initially be spare GIE ; 
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 (A) For GIE that would initially be spare GIE, a description of the type of 
locations to which the SF 6 phase -out exemption would apply (e.g. , 
underground vault s with diameter less than X feet, all substations with 
a certain configuration) ; 
(B) For all other GIE, a description of the specific project(s) to which the 
SF6 phase -out exemption would apply , including location(s ); whether 
it is an existing or new facility, or if it has been subject to a process 
that significantly changes the in- place infrastructure (e.g., overhaul, 
re-powering);  and the number of each type of GIE device described in 
section 95357(d)(4) that would be installed there; 
(4) Description and quantity of SF 6 GIE to be exempted, including but not 
limited to the GIE characteristics (per Tables 1 and 2 of section 9535 2) and 
equipment type, seal type, manufacturer and model, and nameplate 
capacity; 
(5) The names of manufacturer s: 
(A) Contacted about the availability of non -SF6 GIE that might be 
appropriate for use in the type of project(s) described in section 
95357(d)(3)(A)  and/or 95357(d)(3)(B), and the dates contact was 
initiated; 
(B) That submitted bids pursuant to section 95357(l); and 
(C) A description of the universe of entities eligible to bid based on the 
bidding process used by the GIE owner (e.g., public solicitation, 
qualified vendor list); 
(6) The appropriate attestation statement from section 95355( c); 
(7) The section number under which the exemption is being submitted (section 95357(b)(1), (2), (3), or (4)); and 
(8) The applicable justifications for the exemption , as follows: 
(A) For exemptions submitted under section 95357(b)(1), the specific GIE characteristics (per Tables 1 and 2 of section 95352 ) that cannot be 
met by at least two suppliers. 
(B) For exemptions submitted under section 95357(b)(2), the complete dimensions of each space within which requested SF
6 GIE would 
reside; the complete dimensions of each available non- SF6 GIE that 
meet the GIE characteristics (per Tables 1 and 2 of section 9535 2) 
identified by the equipment manufacturers; the complete dimensions 
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 of the SF 6 GIE specified in section 95357(d)(4); and a picture showing 
the space where the SF 6 GIE would be installed.  If the dimensions of 
the non- SF6 GIE are smaller than the dimensions of the space 
available, but the device cannot be placed into the space for another 
reason (e.g., the space lacks the necessary clearance, anot her 
obstacle prevents transport of the device to the space), the justification should also include a description of the constraint that clearly demonstrates why the device cannot be placed in the available space. 
(C) For exemptions submitted under section 95357(b)(3), a list of available non -SF
6 GIE that meet the GIE characteristics (per Tables 1 
and 2 of section 9535 2) identified by the equipment manufacturers 
and a justification that clearly explains why each of the available non -
SF6 GIE identified are i ncompatible and how the SF 6 GIE described in 
section 95357(d)(4) are compatible. 
(D) For exemptions submitted under section 95357(b)(4), a list of available non -SF
6 GIE that meet the GIE characteristics (per Tables 1 
and 2 of section 9535 2) identified by the equipment manufacturers 
and a justification that clearly explains why each of the available non-
SF6 GIE identified fail to meet the technical specifications and/or the 
GIE owner’s documented safety or reliability requirements and how 
the SF 6 GIE described in section 95357(d)(4) do meet the 
requirements.  If failure rates or other indicators of reliability are used, 
specific details must be provided.  If the GIE owner’s justification cites 
a company- specific policy or procedure that available non -SF6 GIE do 
not currently meet and that is within the control of the GIE owner (e.g., the company requires three years of testing for new 
equipment), the justification must also provide an explanation as to 
how the GIE owner will address the situation to enable the transition 
to non -SF
6 alternatives in a timely manner. 
(E) Within the timeframe specified in section 95357(f), i f the Executive 
Officer determines that the information provided as part of the 
exemption request is insufficient to serve as the basis for an 
exemption under this section, s/he may request additional information and/or clarification related to sections 95357(c) and 
95357(d) prior to the application being deemed complete and 
approved pursuant to section 95357(f). 
(9) Information submitted pursuant to section 95357(d)(8) that relies on documentation provided by an equipment manufacturer must be dated less than 180 days prior to the submission of the SF
6 phase -out exemption 
request. 
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 (e) Within seven days of the submittal of the exemption request, the GIE owner will 
receive a notification of the receipt of the request, which will include a n SF6 phase-
out exemption request identification number.  If the GIE owner does not receive a receipt within seven days of submittal, the GIE owner must contact CARB to inquire whether CARB has received the request. 
(f) Within 45 days of submittal of the exemption request , the Executive Officer shall 
notify the GIE owner that their application is complete and has been approved , or 
that additional information and/or clarification is necessary to complete the 
application .  Upon receipt of additional information and/or clarification from the 
GIE owner pursuant to section 95357(d)(8)(E) , within 45 days, the Executive Officer 
shall noti fy the GIE owner that their application is complete and has been 
approved , or that additional information and/or clarification is necessary to 
complete the application . 
(g) In the event that the Executive Officer has not responded to the GIE owner within 
45 days of submittal , the SF
6 phase -out exemption request is approved. 
(h) A GIE owner with an approved SF 6 phase- out exemption may acquire the specific 
SF6 GIE described in the SF 6 phase -out exemption within 24 months of CARB’s 
approval of the request.  If the SF 6 GIE are not acquired within the specified 
timeframe, the GIE owner must submit another SF 6 phase- out exemption request. 
There is no date by which SF 6 GIE acquired utilizing an SF 6 phase -out exemption 
must be placed into active service, or removed from active service. 
(i) In the event of a failure of a GIE device in active service that, in the estimation of 
the GIE owner may only be resolved through the acquisition of SF 6 GIE that would 
otherwise require a n SF 6 exemption,  the GIE owner may acquire an SF6 GIE device 
with the same GIE characteristics as the failed GIE without prior approval from the 
Executive Officer, and must : 
(1) Within 1 5 days of the failure , electronically submit a notification to the 
Executive Officer that include s: 
(A) GIE owner’s name and ARB identification number (if assigned); 
(B) Designated representative’s name, official title, mailing address, phone number , and email address; 
(C) The following information regarding the failure: 
1. The date and time of the failure; 
2. The location of the failure; and 
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  3. The manufacturer’s serial numbers, pursuant to section 
95354(a)(3), of all GIE that were affected by the failure. 
(D) The appropriate attestation statement from section 95355( c). 
(2) Within 45 days of the acquisition of the GIE device used to resolve the 
failure , electronically submit the following information to the Executive 
Officer for each GIE device acquired : 
(A) Date acquired; 
(B) Date activated; 
(C) GIE characteristics ; 
(D) Equipment type; 
(E) Manufacturer’s serial number ; 
(F) An explanation of the cause of the failure, including, in cases of 
imminent failure, the circumstances that led the GIE owner to believe 
failure was imminent, and the timeframe within which the GIE owner 
expected the GIE device to fail; and 
(G) The appropriate attestatio n statement from section 95355(c ). 
(j) Whenever the GIE owner resolves a failure by activating a spare SF 6 GIE device , the 
GIE owner may acquire an SF6 GIE device with the same GIE characteristics as the 
spare SF 6 GIE device that was activated , without prior approval from the Executive 
Officer , and must: 
(1) Follow the notification process pursuant to section 95357( i)(1), but must also 
include the manufacturer’ s serial numbers of the spare SF 6 GIE activated to 
resolve the failure. 
(2) Follow the notification process pursua nt to section 95357(i )(2), excluding 
95357(i)(2)(B); providing the date acquired, GIE characteristics, equipment 
type, and manufacturer’s serial number for the spare GIE device (s) acquired; 
and adding a description of the locations in which the spare device (s) could 
be activated consistent wi th section 95357(d)(3)(A). 
(k) Upon receipt of a notification pursuant to section s 95357(i )(1), (i)(2), (j)(1), or (j)(2) : 
(1) Within seven days of submittal , the GIE owner will receive a n 
acknowledgement of the receipt of the notification , which will include a 
failure identification number.  If the GIE owner does not receive a receipt 
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   within seven days of submittal, the GIE owner must contact CARB to inquire 
whether CARB has received the notificatio n. 
(2) Within 21 days of submittal , the Executive Officer shall notify the GIE owner 
if additional information is necessary to complete the notification ; 
(A) Within 21 days of being notified by the Executive Officer that 
additional information is necessary to complete the notification, the GIE owner must provide the requested information. 
(B) Upon receipt of additional information from the GIE owner pursuant 
to section 95357( k)(2)(A), the Executive Officer will notify the GIE 
owner within 21 days if additional information is necessary to complete the notification . 
(l) A GIE owner who wishes to use a phase- out exemption to acquire SF
6 GIE after the 
applicable phase -out date indicated in Table 1 or Table 2 of section 95352 shall 
base the information required in sections 95357(d)(4) and 95357(d)(8) on bids received by the GIE owner in relation to the projects, locations, and/or structure types identified in sections 95357(d)(3)(A) and/or 95357(d)(3)(B) per the timeframe specified in section 95357(d)(9). 
(1) GIE owners submitting exemption requests under section 95357( b)(1) or the 
technical specifications condition in section 95357(b)(4) must provide an 
explanation of the efforts they will undertake to identify applicable non- SF
6 
GIE to enable the transition to non- SF6 alternatives in a timely manner. 
(m) All emissions from SF 6 GIE acquired pursuant to section 95357 must be included in 
the GIE owner’s annual emissions calculated pursuant to section 95354.1. 
NOTE: Authority cited: Sections 38510, 38560, 38580, 39600 and 39601, Health and 
Safety Code. Reference: Sections 38560, 39600 and 39601, Health and Safety Code. 
§  95357. 2. Nameplate Capacity Adjustments. 
GIE owners who elect to adjust the nameplate capacity value specified by the 
manufacturer on the nameplate attached to the GIE device, or within the manufacturer’s 
official product specifications, may do so by undertaking the following process. 
(a) Notify CARB of the intention to perform nameplate capacity adjustments.  The 
provisions of sections 95357. 2(b)-(e) will only apply to GIE owners that elect to 
perform adjustments and that have notified CARB of their intent to do so. 
(1) The notification must include: 
(A) GIE owner name and ARB identification number (if assigned); 
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 (B) Designated representative’s name, o fficial title, mailing address , 
phon e number and email address; and 
(C) The manufacturer serial numbers of the GIE subject to the nameplate 
capacity adjustment process per section 95357. 2(b). 
(2) The nameplate capacity of a GIE device may only be adjusted more than 
once if the physical capacity of the device has changed (e.g., replacement o f 
bushings) after the initial adjustment was performed, in which case th e GIE 
owner must adjust the nameplate capacity pursuant to th e provisions of 
section 95357. 2(b). 
(b) After submitting the notification per section 95357. 2(a), perform the steps required 
pursuant to sections 95357. 2(c)-(d) on all non -hermetically sealed SF 6 GIE the first 
time each device is removed from regular use pursuant to section 95354(c)(1) or 
during maintenance activities that require opening the gas compartment . GIE that 
fall into the categories listed in subsectio ns (b)(1)- (4) are exempted from this 
requirement : 
(1) GIE with a voltage capacity less than or equal to 38 kV; 
(2) GIE that a re fully -charged GIE to which the GIE owner does not add or 
remove gas; 
(3) GIE whose integrity have been compromised (e.g., due to damage to the 
gas containment vessel); or 
(4) GIE that were acquired after December 31, 202 1. 
(c) If a GIE owner elects to adjust the nameplate capacity of any GIE,  the owner must: 
(1) Record the initial system pressure and vessel temperature prior to removing 
any insulating gas using a pressure gauge meeting the minimum accuracy 
requirements of section 95354(f)(2) and a temperature gauge meeting the 
minimum accuracy requirements of section 95354(f)(3). 
(2) Convert the initial system pressure to a temperature compensated initial 
system pressure by using the manufacturer -specified temperature/pressure 
curve or other manufacturer- provided materials that can be used to convert 
the initial system pressure to a temperature compensated initial system pressure . 
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 (3) If the temperature -compensated initial system pressure of the GIE device 
does not match the temperature -compensated design operating pressure 
specified by the manufacturer, add or remove insulating gas to/from the GIE 
device until the manufacturer- specified value is reached. 
(4) Follow one of the following processes, depending on the methodology 
being used , to measure the amount of gas recovered: 
(A) Connect a mass flow meter between the GIE device and a gas cart; or 
(B) Weigh the gas container being used to receive the gas and record 
this value. 
(5) Recover insulating gas from the GIE device until five minutes after the 
pressure in the GIE device reaches the blank -off pressure. 
(6) Record the amount of insulating gas recovered (pounds), either based on the reading from the mass flow meter, or by weighing the gas container that received the gas and subtracting the weight recorded pursuant to section 
95357. 2(c)(4)(B) from this value.  The amount of gas recovered shall be the 
revised nameplate capacity for the GIE device. 
(7) Record the final system pressure. 
(d) If the GIE device will remain in active service, and the revised nameplate capacity 
value differs from the nameplat e capacity assigned to the device prior to the 
adjustment , the GIE owner must affix a revised nameplate capacity label, showing 
the revised nameplate value and the year the nameplate capacity adjustment process was performed, to the device by the end of th e calendar year in which the 
process was completed.  The manufacturer’s previous nameplate capacity label 
must remain visible after the revised nameplate capacity label is affixed to the 
device. 
(e) For each GIE device whose nameplate capacity was adjusted during the data year, 
the revised nameplate capacity value must be used in all provisions wherein the 
nameplate capacity is required to be recorded, reported, or used in a calculation in 
this subarticle unless otherwise specified herein. 
NOTE: Authority cited: Sections 38510, 38560, 38580, 39600 and 39601, Health and 
Safety Code. Reference: Sections 38560, 39600 and 39601, Health and Safety Code. 
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 § 95358 95359. Enforcement. 
(a) Penalties. Penalties may be assessed for any violation of this subarticle pursuant to 
Health and Safety Code section 38580.  Each day during any portion of which a 
violation occurs is a separate offense. 
(b) Each day or portion thereof that any report required by this subarticle remains unsubmitted ;, is submitted late ;, or contains or contains a n incomplete , untrue or 
inaccurate data field after the reporting deadline or inaccurate information , shall 
constitute a single, separate violation of this subarticle. The Executive Officer shall 
take into consideration the materiality of any incomplete or inaccurate information 
when penalties are assessed. 
(c) Any Each MTCO
2e exceedance of the maximum allowable SF 6 emission rate limit 
for a calendar year data year prior to 202 1 or to the emissions limit for data years 
2021 and beyond shall constitute a single, separate violation of this subarticle for 
each day of the calendar year. 
(d) Any acquisition of a n SF6 GIE device after the dates provided in Table 1 and Table 
2 of section 95352 shall constitute a single, separate violation of this subarticle for 
each day the GIE owner is in possession of the device and for each MTCO 2e of 
covered insulating gas at activation , in that device, or that the device is designed 
to contain, unless it was acquired pursuant to one of the exceptions noted in 
section 95352(a)(1 )-(4). 
(d)(e) Injunctions. Any violation of this subarticle may be enjoined pursuant to Health 
and Safety Code section 41513. 
NOTE: Authority cited: Sections 38510, 38560, 38580, 39600, 39601, and 41510 , and 
41513, Healt h and Safety Code. Reference: Sections 38560, 38580, 39600, 39601, 41510 
and 41513, Health and Safety Code. 
§ 95359.1 . Severa bility. 
Each part of this subarticle is deemed severable, and in the event that any part of this 
subarticle is held to be invalid , the remainder of this subarticle shall continue in full force 
and effect. 
NOTE: Authority cited: Sections 38510, 38560, 38580, 39600 and 39601, Health and 
Safety Code. Reference: Sections 38560, 38562, 38580, 39600 and 39601, Health and 
Safety Code. 
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