A look at how the repeal of the EPA’s endangerment finding could reshape clean‑energy investment—and how New York, Massachusetts, Maryland, Illinois, and Pennsylvania are building (or debating) community solar anyway.

The Big Shift: Uncertainty Moves Back into the Market with the Loss of the Endangerment Finding

The EPA’s 2009 “endangerment finding” is more than a legal phrase—it has been the foundation that allowed the federal government to regulate greenhouse-gas pollution. Repealing it doesn’t just change what the EPA can do; it changes what investors, utilities, and developers believe will happen next. And in energy markets, belief (about rules, incentives, and risk) often becomes reality.

This article breaks the story into two parts: first, what a federal rollback does to renewable-energy economics and confidence; second, why community solar—one of the most practical tools for widening access to clean power—can still grow, especially in states that treat policy as infrastructure.

What is the 2009 Endangerment Finding

The 2009 Endangerment Finding was a landmark decision by the U.S. Environmental Protection Agency that formally recognized greenhouse gases like carbon dioxide and methane as a threat to public health and welfare. Grounded in climate science and prompted by a Supreme Court ruling, the finding established that climate pollution contributes to rising temperatures, extreme weather, and other real‑world impacts that affect people, communities, and the economy. While it didn’t create regulations on its own, it became the legal foundation that allowed the federal government to set standards to reduce emissions from vehicles, power plants, and other major sources—shaping more than a decade of U.S. climate and clean energy policy.

1) Investment Slows When the Climate Rules Stop Feeling Real

Even if wind and solar technology keeps getting cheaper, large projects still depend on financing—and financing depends on predictability. When federal climate authority and long-horizon incentives look shaky, capital gets cautious. That shows up as slower deal flow, more expensive financing, and developers quietly pushing projects to the right.

  • Financing dipped: early 2025 data in a report by Deloitte suggests U.S. wind and solar project financing fell by ~18% versus the same period in 2024.
  • Forecasts shifted down: Deloitte’s outlook puts annual solar, wind, and battery additions through 2030 at roughly 30–66 GW/year rather than 54–85 GW/year under a steadier policy scenario.
  • Timing becomes the hidden cost: delays can matter as much as cancellations, because interconnection queues, supply contracts, and tax-credit windows don’t wait.

Investor confidence isn’t sentimental—it’s math. When policy becomes a coin flip, investors add a risk premium. For clean-energy projects that live or die on long-term cash flows, that premium can be the difference between “build” and “wait.”

Ironically, pulling back federal rules can also increase uncertainty for businesses: it can shift the country toward a patchwork of state requirements and a more lawsuit-driven form of climate accountability. Either way, “unclear” tends to mean “more expensive” for projects that need decades of certainty.

There’s also a global competition angle. When the U.S. signals that clean-energy policy can reverse quickly, investors and manufacturers look for steadier markets. The IRA era helped trigger a wave of announced cleantech manufacturing investment; this report also notes that proposals to roll back incentives would strand some of those plans—especially factories and supply-chain bets that only make sense with long-term credit certainty.

The downstream risk isn’t only fewer projects; it’s fewer learning loops. Manufacturing scale, workforce training, and innovation ecosystems build momentum over time. If developers and manufacturers start pausing—or relocating—because the policy floor disappeared, the U.S. risks losing not just megawatts, but the “muscle memory” of building the next generation of clean technology.

2) Green Jobs: What Looks Like Deregulation Can Become a Slowdown Not Stimulus

Supporters of rollbacks often frame them as cost relief. But the clean-energy labor market has been one of the fastest-growing parts of the economy: with roughly 263,000 solar jobs and 180,000 wind jobs in 2023. When uncertainty hits the project pipeline—whether through weaker incentives, slower utility procurement, or higher financing costs—hiring is usually one of the first things companies quietly reassess.

The impact won’t be evenly distributed. States that have built strong clean-energy markets may keep creating jobs, but at a slower pace without federal tailwinds. Fossil-heavy regions may see short-term stability in legacy industries—while missing the manufacturing and construction opportunities that come with renewables.

3) Incentives Don’t Just Lower Costs—They Lower Hesitation

One practical consequence of repealing the endangerment finding is that it undercuts the federal obligation to pursue greenhouse-gas reductions—and it tends to travel with broader cuts or constraints on climate-related grants and tax credits. In plain terms: fewer programs that de-risk projects, fewer long-term signals that demand will grow, and more reasons for financiers to sit on their hands.

That’s why states matter so much in this moment. In places like New York, Massachusetts, Illinois, and Maryland, state standards, incentive programs, and public financing tools increasingly serve as the “replacement scaffolding” for federal retreat. But other states may use the same moment to step back. The result is a widening policy patchwork—great for some local markets, difficult for companies trying to plan nationally.

Some states may also slow or weaken net metering and clean-energy standards after a federal pullback, reinforcing that divergence.

For utilities, the hardest part is planning. Power systems are built on 20–30-year timelines, but investment decisions are made in today’s regulatory context. When long-term carbon policy becomes unclear, utilities may delay coal retirements, hesitate on long PPAs, or prioritize “safe” incremental moves—even if wind and solar remain cost-competitive.

Corporate demand for clean power is unlikely to disappear—many companies have net-zero commitments and global pressure—but uncertainty can still reduce urgency, especially when procurement teams expect policy whiplash.

4) A Quieter Risk: More Litigation, Less Predictability

Removing a central federal climate finding can create a strange outcome: fewer uniform rules, but more legal and regulatory fragmentation. Without a clear federal framework, states and private litigants may push climate accountability through courts, while utilities and developers navigate differing state requirements and local politics. For long-lived infrastructure, that uncertainty can be as consequential as any single regulation.

Why Community Solar Is the Resilience Play—State by State

Community solar is a simple idea with outsized impact: instead of needing your own roof (or the right credit score, or the right landlord), you subscribe to a shared solar project and receive bill credits. In a moment where federal policy feels less stable, community solar is also a reminder that the clean-energy transition is not one program—it’s many decisions, made locally, over time.

Quick Snapshot of Five Influential Community Markets

  • New York: the scale leader, powered by its VDER “value stack” approach and a growing Solar for All model.
  • Massachusetts: an early pioneer, now raising the equity bar through SMART 3.0 and stronger LMI rules.
  • Maryland: moved from a pilot to a permanent program, with some of the strongest LMI carve-outs in the country.
  • Illinois: growth driven by procurement and RECs, paired with a distinct Illinois Solar for All track.
  • Pennsylvania: the big “watch this space” state—large potential, but still waiting on enabling legislation.

New York: Scale, A Smart Crediting Model, And an On-Ramp for Low-Income Households

New York’s leadership comes from a design choice: pay distributed solar for more than just electrons. The state’s VDER framework (often described as a “value stack”) ties bill credits to grid and environmental value, creating clearer economics for projects built where they help the system most.

  • Scale: the report notes 3 GW+ of community solar operating by 2025—roughly a third of the U.S. total.
  • Consumer value: consolidated billing and guaranteed minimum bill discounts help reduce friction for subscribers.

On equity, New York leans heavily on programmatic access. Its Solar for All approach uses public funding to secure community-solar benefits for income-qualified households, while adders encourage developers to enroll and serve LMI customers at scale.

The biggest constraint is no longer policy—it’s plumbing: interconnection queues and grid upgrades. New York’s next chapter is about getting projects connected faster and ensuring the benefits reach dense urban areas as well as rural buildout zones.

Pennsylvania: A Large Market That Still Needs the Legal Green Light

Pennsylvania is the outlier on this list: as of early 2026, it still lacks a fully operational community solar program. But momentum has been building through proposed legislation that would allow third-party community solar with bill credits (virtual net metering) and consumer protections like guaranteed savings.

  • Where it stands: the report describes a House-passed bill that, at the time of writing, awaited Senate action.
  • Why it matters: studies cited here suggest substantial pent-up project interest and meaningful job potential if the market opens.
  • What to watch: crediting rules, integration with retail choice markets, and whether LMI access is built in from day one.

Massachusetts: Mature Market, Sharper Equity Requirements

Massachusetts helped prove community solar could work at scale, first through virtual net metering and later through the SMART incentive framework. Today, it’s less about inventing the concept and more about refining it: consumer protections, equity, and grid integration.

  • Scale: the report cites roughly 900 MW of community solar across hundreds of projects.
  • Equity shift: SMART 3.0 rules described here push projects toward meaningful LMI participation (including a ≥40% allocation requirement in many cases), with stronger bill-savings expectations.
  • Friction points: interconnection and siting constraints can slow growth even when policy is supportive.

Maryland: Permanent Program, Equity Baked into the Rules

Maryland’s story is a policy evolution: a pilot proved the model, and then the state made it permanent—while tightening equity requirements rather than treating them as optional.

  • Scale: the report places Maryland at roughly 180 MW of community solar operating by 2025, with more in development.
  • Equity by design: a ≥40% LMI requirement per project (as described here) and minimum savings requirements aim to ensure benefits reach households that have historically been locked out.
  • Operational focus: consolidated billing and utility process upgrades are central to making subscriptions work smoothly at scale.

Illinois: Procurement-Driven Growth (And A Separate Solar For All Lane)

Illinois shows a different way to build a market: rather than relying primarily on retail crediting rules, it uses long-term REC procurement to give developers revenue certainty. That certainty can matter even more when federal signals wobble.

  • Scale: the report indicates Illinois reached roughly 300 MW online by 2025, with a strong pipeline.
  • Equity approach: Illinois Solar for All is a dedicated track focused on income-qualified participants and deeper savings structures.
  • Growing pains: high demand can overwhelm interconnection and administrative capacity—success creates its own bottlenecks.

The Takeaway: Policy Is a Form of Infrastructure

Repealing the endangerment finding isn’t only a climate story—it’s an investment story. When the federal government steps back, the market doesn’t simply “find a way.” It re-prices risk. Projects that looked inevitable start to look optional.

But community solar is one of the clearest examples of how momentum can persist: it’s local, it’s modular, and it can be designed to include renters and low-income households rather than treating them as an afterthought. The states that keep building—especially with strong consumer protections and clear grid-planning—will likely be the ones that keep attracting capital and talent, even when national politics are noisy.

If you’re a policymaker, utility, developer, or community organization, the question is less “Will clean energy happen?” and more “Where will it happen fastest—and who will benefit first?”

Resources:

Key sources that informed the analysis and data points in this post.

U.S. Environmental Protection Agency. “Endangerment and Cause or Contribute Findings for Greenhouse Gases under Section 202(a) of the Clean Air Act.” Federal Register 74, no. 239 (December 15, 2009): 66496–66546. https://www.epa.gov/climate-change/endangerment-and-cause-or-contribute-findings-greenhouse-gases-under-section-202a

World Resources Institute. “Summary of the Clean Air Act.” Accessed March 9, 2026. https://www.wri.org/insights/endangerment-finding-repeal-explained

Deloitte. 2024 Renewable Energy Industry Outlook. Deloitte Insights, 2023. https://www.deloitte.com/us/en/insights/industry/renewable-energy/renewable-energy-industry-outlook.html

Carbon Brief. “Explainer: The U.S. Supreme Court’s Ruling in West Virginia v EPA.” Accessed March 9, 2026. https://www.carbonbrief.org/qa-what-does-trumps-repeal-of-us-endangerment-finding-mean-for-climate-action/

PV Magazine USA. Coverage of U.S. community solar market growth and state program updates. Accessed March 9, 2026. https://www.pv-magazine.com/2026/02/09/us-solar-market-positioned-for-continued-growth-in-2026/

New York State Public Service Commission. Value of Distributed Energy Resources (VDER) proceeding and implementation documents. Albany, NY. Accessed March 9, 2026. https://www.nyserda.ny.gov/All-Programs/ny-sun/contractors/value-of-distributed-energy-resources

New York State Energy Research and Development Authority (NYSERDA). “Solar for All.” Program materials. Accessed March 9, 2026. https://www.nyserda.ny.gov/All-Programs/NY-Sun/Community-Solar/Statewide-Solar-for-All

Massachusetts Department of Energy Resources. Solar Massachusetts Renewable Target (SMART) Program (including SMART 3.0 guidance). Boston. Accessed March 9, 2026. https://www.mass.gov/info-details/smart-30-program-details

Maryland Public Service Commission. Community Solar Energy Generating Systems Program. Orders and program information. Baltimore. Accessed March 9, 2026. https://www.pscmaryland.com/regulated-utilities/electricity/renewable-energy/community-solar-program/

Illinois Power Agency. Long-Term Renewable Resources Procurement Plan and Adjustable Block Program materials (Illinois Shines). Springfield. Accessed March 9, 2026. https://ipa.illinois.gov/renewable-resources/long-term-plan.html

Illinois Solar for All. Program materials and annual reports. Accessed March 9, 2026. https://ipa.illinois.gov/renewable-resources/long-term-plan.html

Pennsylvania General Assembly. Community solar enabling legislation. Harrisburg. Accessed March 9, 2026. https://www.palegis.us/legislation/bills/2025/hb0503