Renewable energy credit prices by state range from under a dollar per megawatt-hour on the national voluntary market to $440 per megawatt-hour in Washington D.C. for 2026. The gap comes down to whether a state has a renewable portfolio standard, how aggressively that standard treats solar, and how steep the penalty is for utilities that fall short. Everything else — vintage, geography, legislative shifts — moves prices within those boundaries.
Why Prices Vary So Much Between States
A renewable portfolio standard requires electric utilities to source a minimum share of their power from renewable generation. Around 30 states plus Washington D.C. and Puerto Rico enforce these mandates, and roughly seven more have non-binding goals.1U.S. Energy Information Administration. Renewable Portfolio and Clean Energy Standards When the law demands more renewable energy than the market can easily supply, utilities compete for a limited pool of credits and prices climb. When new wind or solar projects flood a region with credits, prices fall.
Geography is one of the sharpest levers. Many states require that credits come from generators inside their borders or within a defined regional grid. A credit produced locally in a supply-constrained state costs more than one imported from a wind-rich plains state. States adjust these boundaries from time to time to stabilize prices or push local development.
Vintage matters too. Each credit is stamped with the year the electricity was generated, and most states only accept credits inside a limited window. A credit near expiration trades at a discount; a current-year credit carries a premium.
Legislation can move prices almost overnight. A bill raising future renewable targets sends buyers scrambling to lock in supply before scarcity sets in. A loosened standard or expanded geographic eligibility can deflate a market in weeks.
Compliance Market Prices by State
Compliance markets produce the highest prices because utilities face real financial penalties for missing their targets. The figures below reflect recent market activity and shift throughout the year; check current exchange listings before buying or selling.
New Jersey
New Jersey’s original SREC program closed to new solar systems in April 2020 under the Clean Energy Act and was replaced first by Transition Renewable Energy Certificates, then by the Successor Solar Incentive program.2New Jersey Legislature. New Jersey Chapter 17 PL 2018 Legacy SRECs from older systems still trade on the open market, but prices have been declining. Recent trades were around $160 per megawatt-hour, down from roughly $188 earlier in 2025. The solar alternative compliance payment for the June 2025 through May 2026 energy year dropped to $198, pulling market prices with it.
Under SuSI, incentive rates are set administratively instead of by trading. Residential net-metered systems receive $85 per credit; non-residential rooftop projects earn $100 to $130 depending on size and whether the owner is a public entity.3DSIRE. Successor Solar Incentive SuSI Program Developers get more certainty; early SREC-style upside is gone.
Massachusetts
Massachusetts splits its portfolio standard into Class I and Class II. Class I covers newer facilities installed after 1997, including solar, wind, and fuel cells using renewable fuels. Class II covers older systems generating before that cutoff, including legacy hydroelectric and landfill gas.4DSIRE. Renewable Portfolio Standard The Class I minimum standard rises to 27% in 2026, tightening demand each year.5Mass.gov. Renewable Energy Portfolio Standard Solar-specific credits have historically commanded prices well above general Class I credits, though exact numbers shift compliance year to compliance year.
Pennsylvania and Maryland
Neighboring states with different solar ambitions produce very different prices. Pennsylvania’s SREC market is loose, with recent bid prices around $25 per credit. Maryland’s tighter solar carve-out and higher alternative compliance payments push credit values considerably higher. Recent Maryland brokerage rates for variable-price SRECs sat in the low-to-mid $40s, though long-term contracts can lock in different rates.
Washington D.C.
The District of Columbia maintains some of the most aggressive solar requirements in the country. Its solar alternative compliance payment for 2026 is $440 per megawatt-hour, one of the highest in any U.S. market. That penalty is steep enough that utilities almost always find it cheaper to buy a credit from a solar generator than to pay the fine, which keeps SREC demand and trading prices strong in the District.
What Voluntary Market Credits Cost
The voluntary market runs on entirely different economics. Corporations, universities, and individuals buy credits to back sustainability pledges or offset their electricity use, but no law forces them to. Voluntary buyers can source from anywhere in the country, so they gravitate toward the cheapest supply, usually wind from resource-rich plains states.
National voluntary benchmark prices sat between roughly $0.50 and $1.50 per megawatt-hour for most of the past decade before spiking above $4 in 2022. Prices have retreated from that peak but remain above pre-2021 levels.6US EPA. Impacts of Voluntary Renewable Energy Demand on Deployment Voluntary credits are cheap because supply is abundant and buyers face no penalty for walking away.
Large technology firms are the heaviest buyers, purchasing millions of credits annually to match data center electricity use. That corporate demand supports renewable projects in states without their own mandates, but the revenue stream is modest compared to what a solar project earns in New Jersey or D.C.
How Alternative Compliance Payments Cap Prices
The alternative compliance payment is the fine a utility pays for each megawatt-hour it falls short of its renewable requirement. No utility will pay more for a credit than the ACP costs, so the ACP acts as a hard ceiling on how high prices can climb.7US EPA. U.S. Renewable Electricity Market In well-functioning compliance markets, credit prices sit just below the ACP.
These rates vary widely. D.C.’s $440 solar ACP for 2026 sits at one extreme. New Jersey’s solar ACP is on a scheduled phase-down, dropping from $208 in 2024-2025 to $198 for 2025-2026. When a state lowers its ACP, credit prices follow it down almost immediately because the math changes for every utility buyer at once.
Some states set separate ACPs for solar versus general renewable credits, which is why solar credits often trade at a premium over wind or biomass credits in the same state. The solar ACP creates a protected sub-market that channels investment specifically toward solar development even when cheaper wind credits are available. Regulators adjust these rates periodically to balance renewable growth targets against consumer electricity costs.
Selling Credits From Your Own Solar System
If you own a rooftop solar system in a state with a compliance market, your panels generate credits with real cash value. The key word is “own.” If you financed through a lease or power purchase agreement, the leasing company typically keeps the credit rights unless your contract says otherwise.
Most homeowners don’t sell directly to utilities. You work with an aggregator or broker that pools credits from many small generators and sells into the compliance market on your behalf. Companies including Xpansiv Managed Solutions and Sol Systems are among the larger intermediaries. Some brokers offer pre-sale contracts at a fixed price for several years, trading potential upside for guaranteed income. Others sell at the current market rate, so revenue fluctuates.
To participate, your system needs to be registered with the appropriate state tracking system, and your installer or broker usually handles the paperwork. Once registered, the system automatically generates one credit for every megawatt-hour produced, and those credits appear in your account for sale or retirement. If you sell your home, the SREC rights can either transfer to the new owner as a selling point or stay with you, depending on how your contract is structured.
One boundary worth flagging: owning the panels does not, by itself, let you call your electricity “renewable” once you’ve sold the credits. Under the FTC’s Green Guides, making a renewable energy claim after selling the credits is deceptive and can draw enforcement action.8Federal Trade Commission. Part 260 Guides for the Use of Environmental Marketing Claims The environmental claim goes with the credit, not the panel.