WV Sues PA Over Act 40/114: What the Commerce Clause Fight Means for Tier II AECs

On September 3, 2026, West Virginia Attorney General J.B. McCuskey filed suit in the U.S. District Court for the Middle District of Pennsylvania against the Pennsylvania Public Utility Commission and two commissioners. The case—*State of West Virginia v. Pennsylvania Public Utility Commission et al.*, No. 3:26-cv-02527—challenges the geographic eligibility rules added by Act 40 of 2017 and Act 114 of 2020.

The complaint calls those statutes “naked economic warfare between states.” The legal theory is dormant Commerce Clause: Pennsylvania can run an Alternative Energy Portfolio Standards (AEPS) program, but it cannot wall most of that credit market off from otherwise eligible generators elsewhere in PJM.

For people who actually retire Pennsylvania AECs, this is not abstract constitutional chatter. Act 40 and Act 114 decide who can mint Tier I solar credits and Tier II AECs that clear Pennsylvania compliance. Waste-coal, large hydro, MSW, and other in-state Tier II owners—and C&I buyers who procure AECs—should watch the docket without assuming a verdict.

What Act 40 and Act 114 changed

AEPS (2004) originally let qualifying resources across the PJM Interconnection create AECs for Pennsylvania compliance. One credit equals one megawatt-hour, tracked in PJM-EIS GATS.

After May 31, 2021, the schedule is familiar: 8% Tier I (including a 0.5% solar carve-out) plus 10% Tier II—18% of retail sales. Non-solar Tier I can still come from anywhere in PJM. The closed-border statutes hit the pieces that move price:

- Act 40 (2017) confined Tier I solar / SRECs to Pennsylvania-sited or Pennsylvania-connected systems. - Act 114 (2020) did the same for Tier II—waste coal, large-scale hydro, municipal solid waste, and related resources—via “notwithstanding” language that overrides the original PJM-wide framework.

Those restricted categories cover 10.5 of the 18 percentage points. According to complaint coverage and PUC reporting history, out-of-state Tier II share fell from roughly 40% in 2020 to 0% by 2025; Pennsylvania-origin solar credits rose from about 39% in 2017 to 99% in 2025.

Legislative history is blunt. Act 40 sponsors talked about “clos[ing] the borders” to protect Pennsylvania solar. Act 114 co-sponsorship materials were framed as closing the Tier II border so ratepayer dollars stayed in-state. West Virginia’s complaint leans on that record.

PJM / interstate context

Pennsylvania and West Virginia share the PJM grid. Wholesale power and GATS certificates already move across state lines. West Virginia’s argument: once Pennsylvania opened a compliance product to PJM resources, it cannot later exclude out-of-state generators solely for being out-of-state when the attribute is the same MWh on the same regional system.

The suit does not attack the 18% obligation itself. It seeks declaratory and injunctive relief against the geographic gates in Act 40, Act 114, and the PUC implementation orders—so otherwise eligible out-of-state PJM resources could create and sell SRECs and Tier II AECs on equal terms with in-state plants.

Alleged costs and WV producer impact

Treat these as allegations / reported figures, not PASRECs claims:

- According to the complaint (as reported by Legal Newsline and others), AEPS compliance costs rose from about $122.5 million in 2020 to more than $700 million in 2025. - According to the Pennsylvania PUC’s 2025 AEPS Annual Report (our summary), purchased-credit costs totaled about $701.9 million in RY2025, including roughly $367.6 million for Tier II at a weighted-average price of $26.92. - According to the complaint, West Virginia generators lost more than $25 million in 2025 credit-revenue opportunity. - According to Commonwealth Foundation research cited in the complaint and secondary coverage, cumulative AEPS compliance costs exceed $3.3 billion. - According to Forbes (Dan Eberhart, Sept. 8, 2026), Tier II prices rose roughly fourteenfold since 2020 while annual AEPS costs reached about $702 million.

Directionally, that matches the PUC’s own “meteoric” Tier II language after Act 114. Exact “X-fold” headlines depend on baseline: the 2020 weighted average (~$1.92) versus earlier historic lows near a dime. Flett Exchange emphasizes the climb from sub-dollar Class 2 prints before Act 114 into the mid-twenties and higher by 2026. Different baselines, same story: tighter in-state Tier II supply and much higher compliance spend.

Market signal

Flett reported that the filing pressured forward PA, New Jersey, and D.C. REC/SREC prices for 2027–2030, with NJ 2028–2030 SRECs cited down about $10. That is litigation-risk pricing—not a holding, and not a forecast that Pennsylvania’s geographic rules will fall.

For PA Tier II, the binary is large: do Act 114’s in-state gates hold, or does a federal court reopen PJM-wide eligibility? Either path changes the supply stack that sets AEC clearing levels for EDCs, EGSs, and C&I buyers.

What PA generators and C&I buyers should watch

1. Schedule in 3:26-cv-02527. Early motions on standing, *Ex parte Young*, and discrimination theories will set tempo. No outcome is baked in. 2. Scope of any relief. Prospective-only injunctions, banked credits, grandfathered contracts, and GATS vintage rules matter as much as the headline. 3. PUC / General Assembly response. The PUC’s 2025 AEPS report already urged reassessment of Act 114’s geographic criteria. Litigation can accelerate—or freeze—that talk. 4. Spillover to other closed-border solar markets. Brokers are already pricing NJ/DC risk; PA SREC and Tier II books will trade the same uncertainty. 5. Your eligibility path. In-state Tier II facilities still need correct GATS registration, meter data, and transfer hygiene. Buyers still need AEPS-eligible certificates for the right compliance year—not merely “green” voluntary RECs.

A lawsuit is not a market redesign. Until a court enjoins enforcement or the General Assembly rewrites the statute, Act 40 and Act 114 remain the operative eligibility screen.

What stays the same

If you own a Pennsylvania Tier II resource, this case is about whether an in-state scarcity premium persists. If you buy AECs for Pennsylvania compliance, it is about whether the supply stack can reopen to PJM competitors. Either way, the work that does not change is the same: confirm AEPS tier eligibility, track certificates in GATS, and match retirements to the right year.

PASRECs focuses on Pennsylvania AEPS / Tier II AEC accounting and GATS-facing compliance support for generators and buyers. Use the suit as a reason to tighten eligibility documentation—not as a reason to assume tomorrow’s rules already changed.

Sources

1. Legal Newsline / West Virginia Record — John O’Brien, “West Virginia sues Pennsylvania over ‘naked economic warfare’” (Sept. 8, 2026). https://www.legalnewsline.com/west-virginia-record/west-virginia-sues-pennsylvania-over-naked-economic-warfare/article_9c96505f-c2cd-465a-bb3f-35c8e90c9429.html

2. Bloomberg Law — Shayna Greene, “West Virginia Sues Pennsylvania For Energy Credit Sales Law” (Sept. 3, 2026). https://news.bloomberglaw.com/environment-and-energy/west-virginia-sues-pennsylvania-for-energy-credit-sales-law

3. PACER Monitor — *State of West Virginia v. Pennsylvania Public Utility Commission et al.*, No. 3:26-cv-02527 (M.D. Pa., filed Sept. 3, 2026). https://www.pacermonitor.com/public/case/66614997/State_of_West_Virginia_v_Pennsylvania_Public_Utility_Commission_et_al

4. Forbes — Dan Eberhart, “Pennsylvania’s Costly Energy Protectionism Faces West Virginia Lawsuit” (Sept. 8, 2026). https://www.forbes.com/sites/daneberhart/2026/09/08/pennsylvanias-costly-energy-protectionism-faces-west-virginia-lawsuit/

5. Flett Exchange — Michael Flett, “West Virginia Commerce Clause Case Causes PA, DC, and NJ SREC Prices to Slide” (Sept. 9, 2026). https://www.flettexchange.com/blog/post/west-virginia-commerce-clause-case-causes-pa-washington-dc-and-nj-srec-prices-slide

6. National Law Review — “The Hidden Charge on Every Pennsylvania Electric Bill…” (Sept. 17, 2026). https://natlawreview.com/article/hidden-charge-every-pennsylvania-electric-bill-and-why-west-virginia-suing-end-it

7. Times Observer — Tom Joyce, “West Virginia sues Pennsylvania over energy credit limits” (Sept. 9, 2026). https://www.timesobserver.com/news/pa-news-apwire/2026/09/west-virginia-sues-pennsylvania-over-energy-credit-limits/

8. Commonwealth Foundation — “The Rising Cost of Pennsylvania’s Alternative Energy Portfolio Standards” (June 16, 2026), as cited in the complaint / secondary reporting. https://commonwealthfoundation.org/research/the-rising-cost-of-pennsylvanias-alternative-energy-portfolio-standards/

9. Pennsylvania PUC — AEPS Annual Report (2025). https://pennaeps.com/wp-content/uploads/2026/04/aeps-2025-report_2-5-25_final_-1.pdf