Washington Administrative Code › Title 194 - Commerce, Department of (Energy) › Chapter 194-50 - Washington state department of commerce adoption and amendment of ASHRAE Standard 100, 2018 › Section 194-50-080 - ASHRAE Standard 100, 2018-Section 8-Energy Audit Requirements

Current through Register Vol. 24-14, July 15, 2024
8.1 The
qualified energy
			 auditor
shall complete Form D and submit to the
authority
			 having jurisdiction
(
AHJ
). If an energy audit is
			 required within this section, a copy of the audit summary results shall be
			 included in the compliance documentation in a format specified in Normative
			 Annex Z. Compliance with this standard shall be achieved by adopting
energy efficiency measures
(
EEMs
) that
			 collectively will reduce annual
building
energy use.
Exception to 8.1:
For Level 1 audit, no Form D is
				required.
8.2
Energy
			 audit requirements for buildings without energy targets.
8.2.1
Overall process.
A Level 2
			 energy audit (as defined in Section 8.4.2) shall be conducted for all
Tier 1 covered buildings
not having an energy target. The
			 energy audit and the associated energy audit report shall be completed by a
qualified energy auditor
practicing within their field of
			 competency.
Exception to 8.2.1:
Buildings
may
				use energy audits completed within five years prior to the
building's
compliance date, provided that the scope of the
				energy audit meets the requirements of this section and that there have been
				minimal changes to the systems within the audit scope. The energy audit must be
				evaluated consistent with the investment criteria in Normative Annex X.
8.2.2 The scope of the energy
			 audit shall include the following required end uses as applicable to the
building
:
* Envelope;
* Lighting;
* Cooling;
* Heating;
* Ventilation and exhaust systems;
* Air distribution systems;
* Heating, chilled, condenser, and domestic water
				systems;
* Refrigeration except for food processing
				refrigeration;
* Power generation equipment;
* Uninterruptible power supplies and power distribution
				units;
* People-moving systems;
* The scope of the energy audit may include
campus
				district heating and/or cooling systems
when the
campus
				district heating and/or cooling system
serves the
building
being audited.
8.3.2
Buildings that do not meet their
			 energy targets overall process.
An energy audit shall be conducted, and an associated energy
				audit report shall be provided, for all
buildings
that do not
				meet their energy target. The energy audit shall be completed by a
qualified energy auditor
practicing within their field of
				competency. The energy audit shall be at an audit level specified by the
qualified energy auditor
to be sufficient to identify and
				evaluate the
EEMs
that, if implemented, would result in the
building
meeting its energy target. The
qualified
				energy auditor
may refer to the list of potential
EEMs
in Informative Annex E.
After the completion of the audit and the selection of
EEMs
to be implemented, the applicant must calculate an
				adjusted
energy use intensity
(
EUI
) for the
building
based on the estimated energy savings from the
				selected
EEMs
and the historical energy use of the
building
. This adjusted
EUI
is then compared
				to the energy target for the
building
. If the adjusted
EUI
is less than the energy target, the applicant shall
				proceed with implementation as specified in Section 9. If the adjusted
EUI
is greater than the energy target, a more rigorous energy
				audit investigation is required to identify additional
EEMs
.
				This process is repeated until the
building's
adjusted
EUI
is less than its energy target.
Calculation of the adjusted
EUI
is shown in
				the following equation:
Click
				here to view image
Following the completion of an energy audit that has identified
EEMs
sufficient to meet the
building's
energy
				target, the applicant shall implement those
EEMs
per the
				requirements of Section 9.
Exception to 8.3.2:
Buildings
may
				use energy audits completed within five years prior to the
building's
compliance date, provided that the scope of the
				energy audit meets the requirements of this section and there have been minimal
				changes to the systems within the audit scope. In this case, the same
				comparison of adjusted
EUI
to energy target shall be made by
				the applicant. If the
EEMs
identified in the audit are still
				applicable, have not been implemented, and if implemented would result in the
building
meeting its energy target, these measures shall be
				implemented by the facility, and the project shall follow the procedures in
				Section 9. If the identified
EEMs
do not result in an adjusted
EUI
less than the energy target, a new energy audit shall be
				conducted as described in Section 8.3.2.
8.4.1
Level 1 Audit.
Buildings
shall perform a Level 1 audit (walkthrough analysis)
			 as defined in ANSI/ASHRAE/ACCA Standard 211-2018 Standard for Commercial
			 Building Energy Audits, Section 5.312.
8.4.2
Level 2 Audit.
Buildings
shall perform a Level 2 Audit (energy survey and
			 engineering analysis) as defined in
ANSI/ASHRAE/ACCA Standard 211-2018
			 Standard for Commercial Building Energy Audits
, Section
			 5.412.
8.5.1
Audit results.
The energy
			 audit report shall define the actions necessary for the
building
			 owner
to achieve the energy and cost savings that are recommended in
			 the report.
Energy audit results shall be presented in a summary table that
				includes, at a minimum, an estimate of each of the following:
* A list of recommended
EEMs
that, if
				implemented, will either meet the energy target for the
building
if it has a target or, if it does not have an energy
				target, will meet the economic criteria set by the standard in Section
				9.
* The estimated energy savings and peak demand savings
				associated with each recommended
EEM
, expressed in the cost
				units used on the
building owner's
energy bills, and the units
				used for comparison with the energy target.
* The estimated (modeled)
energy cost
savings
				associated with each recommended
EEM
.
* The estimated cost of implementation for each recommended
EEM
. The costs of implementation shall include the required
				monitoring of energy savings per the requirements of Section 9.
The economic evaluation of measures are required by Normative
				Annex X.
8.5.2
Interactive effects.
Energy savings analysis shall include
interactive effects
of all selected
EEMs
.
			 When considering multiple
EEMs
with
interactive
			 effects
, the order of analysis shall start with load reduction
			 measures and proceed through distribution systems and associated equipment
			 efficiencies and then plant and heat-rejection systems. Any
interactive
			 effects
on equipment sizing and part load performance of equipment
			 shall be accounted for due to reduced loads on subsequent systems.
8.5.4.1
Nonfederal facilities.
The minimum financial criteria required for reporting is specified in Normative
			 Annex X.
8.5.4.2
U.S. Federal
			 Facilities
- Not adopted.
8.5.5
End-use analysis.
The
			 energy audit shall include an end-use analysis that compares the estimated
			 energy use of the facility after implementation of all selected
EEMs
to historical utility consumption. The intent of this
			 requirement is to ensure that estimates of the base-case end-use energy
			 estimates and potential energy-savings estimates in the energy audit report are
			 reasonable.
Informative Note
:
For example, if
				the audit identifies lighting retrofit opportunities, the
qualified
				energy auditor
shall compare the identified energy savings for those
				opportunities with the base-case energy use of the facility and demonstrate
				that they make up a reasonable fraction of the historical electricity
				consumption at the site.
8.5.5.2
Requirements for Level 2 Audits.
The
qualified energy
			 auditor
is required to estimate the energy use of all end uses that
			 individually comprise more than five percent of total historical
building
energy use. The energy estimates for these end uses
			 shall be summed and compared to historical energy consumption for the facility.
			 The sum of the base-case end-use energy estimates must be between 90 percent
			 and 100 percent of the historical energy use at the site.
This comparison shall be conducted separately for each fuel
				type, such as electricity, natural gas, or fuel oil, for which
EEMs
are identified. On-site energy sources such as solar, photovoltaic,
				geo-thermal, and wind shall be included.
Correction for historical weather for the base year versus
				average weather used in
baseline
estimates may be used.
The same energy use estimates that comprise the end-use
				analysis shall also be used as the basis for energy savings calculations. The
qualified energy auditor
shall verify that each
EEM
savings estimate is reasonable in comparison to the
				historical energy consumption of that end use based on energy consumption
				survey data or experience with similar sites.
The
qualified energy auditor
shall verify that
				the combined savings from multiple
EEMs
shall take into
				account
interactive effects
among measures.
Miscellaneous plug loads may be estimated on average equipment
				power density and
building
area. (See Form D in Normative
				Annex Z.)