In September 2026, West Virginia filed a federal lawsuit against Pennsylvania, accusing its northern neighbor of engaging in protectionist policies that shut out out-of-state energy suppliers. Filed late last week in a Pennsylvania federal court by West Virginia Attorney General JB McCuskey, the legal action targets Pennsylvania’s evolving energy credit regulations, which state officials argue amount to unconstitutional economic warfare under the Commerce Clause.
The core dispute centers on how Pennsylvania enforces its Alternative Energy Portfolio Standards, which mandate that power companies source 18% of their electricity from approved generation methods. Utilities can fulfill this requirement either by generating the qualifying power themselves or by purchasing energy credits, where each credit represents one megawatt-hour of electricity. When Pennsylvania launched the program back in 2004, it welcomed approved power producers from across the entire 13-state PJM Interconnection grid. Over the past decade, however, the regulatory landscape shifted dramatically.
According to the lawsuit, Pennsylvania passed legislation in 2017 requiring electricity providers to procure solar credits exclusively from in-state sources. This protectionist shift continued in 2020 with the passage of Act 114, which imposed similar geographical restrictions on Tier II credits—a category encompassing electricity generated from waste coal, large dams, and trash incineration. These legislative changes effectively walled off 10.5 percentage points of Pennsylvania’s broader 18% energy mandate, keeping at least 10 West Virginia power producers out of the market entirely, according to court documents.
The Economic Fallout and Soaring Credit Costs
The statistical shift following these legislative mandates is stark. Data cited in the proceedings shows that in 2020, approximately 40% of the Tier II credits utilized in Pennsylvania originated from out-of-state providers. By 2025, that figure plummeted to 100% domestic supply. A similar trajectory occurred with solar credits, where local producers supplied 39% of the market in 2017 before reaching 99% by 2025.
While the state-level restrictions successfully funneled business to local operators, they severely choked the overall supply of available credits. Because utility companies were still legally required to purchase the exact same volume of credits despite a shrinking pool of eligible sellers, market prices surged. The Pennsylvania Public Utility Commission (PUC)—whose chairman, Stephen DeFrank, and vice chair, Kimberly Barrow, are named as defendants in the lawsuit—reported a dramatic financial impact. The average price of a Tier II credit climbed from $1.92 in 2020 to $26.92 in 2025. Consequently, total Tier II compliance costs jumped from $3.6 million to over $367 million during that five-year span, an escalation the PUC characterized as “meteoric.”
In light of these escalating expenses, the PUC noted that “given this demand and other factors affecting wholesale prices, a reassessment of Act 114 is appropriate.” Meanwhile, neighboring West Virginia calculates the financial damage to its regional economy in the tens of millions. The state asserts that its power producers lost out on more than $25 million in sales during 2025 alone, with total projected losses exceeding $895 million over the next decade. Furthermore, officials contend that over $120 million of those potential revenues could have been leveraged to lower utility bills for West Virginia consumers.
Legal Arguments and Next Steps
The lawsuit does not attempt to dismantle Pennsylvania’s foundational 18% green energy mandate. Instead, it challenges the constitutionality of the subsequent geographical barriers, arguing they illegally discriminate against interstate commerce by favoring domestic businesses over regional competitors.
West Virginia is asking the federal court to strike down the in-state supply limits and restore open competition for all qualified producers across the 13-state PJM grid. As the litigation gets underway in federal court, legal experts and energy regulators will be watching closely to see how the judiciary balances state environmental policy goals against constitutional protections for interstate commerce. We welcome your thoughts and perspectives on this developing legal battle—please share your comments below.
