I 
119TH CONGRESS 
1ST SESSION 
H. R. 603 
To direct the Federal Energy Regulatory Commission to improve interregional 
electricity transfer capability between immediately adjacent transmission 
planning regions, and for other purposes. 
IN THE HOUSE OF REPRESENTATIVES 
JANUARY 22, 2025 
Mr. CASTEN introduced the following bill; which was referred to the 
Committee on Energy and Commerce 
A BILL 
To direct the Federal Energy Regulatory Commission to 
improve interregional electricity transfer capability be-
tween immediately adjacent transmission planning re-
gions, and for other purposes. 
Be it enacted by the Senate and House of Representa-
tives of the United States of America in Congress assembled, 
SECTION 1. SHORT TITLE. 
This Act may be cited as the ‘‘Reinforcing the Grid 
Against Extreme Weather Act of 2025’’. 
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SEC. 2. IMPROVING INTERREGIONAL ELECTRICITY TRANS-
FER CAPABILITY. 
Part II of the Federal Power Act (16 U.S.C. 824 et 
seq.) is amended by adding at the end the following: 
‘‘SEC. 
224. 
IMPROVING 
INTERREGIONAL 
ELECTRICITY 
TRANSFER CAPABILITY. 
‘‘(a) RULEMAKING.—Not later than 24 months after 
the date of enactment of this section, the Commission 
shall issue regulations to establish a process for— 
‘‘(1) calculating existing transfer capability be-
tween each transmission planning region and its im-
mediately adjacent transmission planning region, 
such that— 
‘‘(A) each transmission planning entity for 
a given transmission planning region and the 
transmission planning entities for any imme-
diately adjacent transmission planning region 
shall use the same method to calculate the 
transfer capability between them; and 
‘‘(B) each shared method of calculation 
shall comply with requirements established by 
the Commission; 
‘‘(2) determining a minimum transfer capability 
between each transmission planning region and its 
immediately adjacent transmission planning region 
in order to— 
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‘‘(A) ensure that each transmission plan-
ning region has sufficient electric transfer capa-
bility with immediately adjacent transmission 
planning regions to ensure reliability during im-
pacts associated with weather events, physical 
events, or cyberattacks to the transmission 
planning region; and 
‘‘(B) optimize achievement of the trans-
mission benefits; 
‘‘(3) identifying, selecting, and allocating costs 
for individual interregional transmission projects 
needed to achieve each minimum transfer capability 
identified pursuant to paragraph (2); and 
‘‘(4) preventing the disclosure of information 
pertaining to cyberattacks that may compromise the 
security of the electricity system. 
‘‘(b) FILING A PLAN.— 
‘‘(1) IN
GENERAL.—Not later than 3 years 
after the date of enactment of this section, and at 
least every 5 years thereafter, the transmission plan-
ning entities for each pair of immediately adjacent 
transmission planning regions shall file with the 
Commission, and receive approval for, a plan that, 
in accordance with the regulations issued under sub-
section (a)— 
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‘‘(A) evaluates and selects interregional 
transmission projects based on consideration of 
the transmission benefits; and 
‘‘(B) 
achieves 
minimum 
interregional 
transfer capability. 
‘‘(2) DUTY OF COMMISSION.—The Commission 
shall approve or deny a plan filed pursuant to para-
graph (1) in consideration of the factors described in 
subsection (a)(2). 
‘‘(c) REPORT.—Not later than 48 months after the 
date on which the regulations are issued pursuant to sub-
section (a), and annually thereafter, the Commission shall 
publish in the Federal Register a report on the results 
of implementing this section. 
‘‘(d) DEFINITIONS.—In this section: 
‘‘(1) GREENHOUSE GAS.—The term ‘greenhouse 
gas’ includes each of the following: 
‘‘(A) Carbon dioxide. 
‘‘(B) Methane. 
‘‘(C) Nitrous oxide. 
‘‘(D) Sulfur hexafluoride. 
‘‘(E) Any hydrofluorocarbon. 
‘‘(F) Any perfluorocarbon. 
‘‘(G) Nitrogen trifluoride. 
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‘‘(H) 
Any 
fully 
fluorinated 
linear, 
branched, or cyclic— 
‘‘(i) alkane; 
‘‘(ii) ether; 
‘‘(iii) tertiary amine; or 
‘‘(iv) amino ether. 
‘‘(I) Any perfluoropolyether. 
‘‘(J) Any hydrofluoropolyether. 
‘‘(K) Any other fluorocarbon, except for a 
fluorocarbon with a vapor pressure of less than 
1 mm of Hg absolute at 25 degrees Celsius. 
‘‘(2) 
TRANSMISSION
BENEFIT.—The 
term 
‘transmission benefit’ means a broad range of eco-
nomic, operational, safety, security, resilience, public 
policy, environmental, and other reasonably antici-
pated benefit of constructing, modifying, or oper-
ating a transmission facility, including any benefit 
realized when real-time energy prices and oper-
ational conditions differ from those anticipated in 
the 48-hour ahead or day-ahead time frame. Such 
benefits include— 
‘‘(A) improved reliability; 
‘‘(B) improved resilience; 
‘‘(C) improved safety; 
‘‘(D) reduced congestion; 
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‘‘(E) reduced power losses; 
‘‘(F) greater carrying capacity; 
‘‘(G) reduced operating reserve require-
ments; 
‘‘(H) improved access to lower-cost elec-
tricity generation; 
‘‘(I) improved access to electricity gener-
ating facilities with no direct emissions of 
greenhouse gases; 
‘‘(J) improved public health from the clo-
sure of electricity generation facilities that emit 
harmful pollution; 
‘‘(K) increased competition and market li-
quidity in electricity markets; 
‘‘(L) improved energy resilience and reli-
ability of Department of Defense installations; 
‘‘(M) optimizing use of existing trans-
mission assets, including any existing rights of 
way; 
‘‘(N) other transmission costs avoided by 
the proposed transmission solution; and 
‘‘(O) other potential benefits of increasing 
the interconnectedness of the electric grid. 
‘‘(3) TRANSMISSION
PLANNING
ENTITY.—The 
term ‘transmission planning entity’ means an entity 
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responsible for planning for the deployment of elec-
tric transmission for a given transmission planning 
region. 
‘‘(4) TRANSMISSION
PLANNING
REGION.—The 
term ‘transmission planning region’ means a geo-
graphic area that the Commission finds sufficient to 
satisfy its requirements for the scope of regional 
transmission planning, as established in or in com-
pliance with the following orders issued by the Com-
mission: 
‘‘(A) ‘Transmission Planning and Cost Al-
location by Transmission Owning and Oper-
ating Public Utilities’ published in the Federal 
Register on October 12, 2012 (77 Fed. Reg. 
64890); and 
‘‘(B) ‘Building for the Future Through 
Electric Regional Transmission Planning and 
Cost Allocation’ published in the Federal Reg-
ister on October 24, 2012 (77 Fed. Reg. 
64890).’’. 
Æ 
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