SerpApi.Org
Most people who install solar panels focus on the big number: the federal tax credit, the loan payment, the projected savings on their electric bill. What tends to slip through the cracks are the smaller, less publicized programs that can still add up to real money.
With the federal residential solar credit now gone for new installations, these overlooked incentives matter more than ever for anyone weighing the cost of going solar in 2026.
1. State sales tax exemptions on equipment
Many homeowners assume sales tax is just baked into their solar quote, but in a number of states it should never have been charged at all. Arizona, for example, exempts solar energy devices from both sales tax and property tax for residential and commercial systems, and the sales tax exemption is automatically applied at the point of sale with no paperwork required from the buyer. Other states like Vermont and Colorado offer similar breaks, though the rules and required paperwork vary quite a bit from place to place.
The dollar impact is bigger than people expect. On an average system costing about $18,000 before taxes and incentives, sales tax can tack on an additional cost of between $800 and $1,300 in states without a solar sales tax exemption. If your installer never mentioned whether your state offers this exemption, it is worth asking directly, because in some cases the paperwork has to be filed rather than applied automatically.
2. Property tax exemptions that protect your home value
Solar panels typically raise a home's appraised value, which sounds great until the county assessor sends a bigger tax bill. Fortunately, most states have a workaround. There are 36 states that offer property tax exemptions for solar energy, according to the Solar Energy Industries Association. These exemptions let the added value from a solar system stay off the books for tax purposes entirely.
The catch is that this protection is not always automatic. In states with renewable energy property tax exemptions, homeowners whose property values rise are protected from a comparable increase in property taxes, meaning the home's worth goes up without a corresponding tax hike. Some jurisdictions require a simple form filed with the local assessor, and skipping that step means paying taxes on value you never should have been taxed on in the first place.
3. Local and county-level rebate programs
Beyond state incentives, some counties and municipalities run their own smaller rebate or credit programs that rarely get mentioned by installers focused on bigger numbers. In addition to a state property tax exemption, a handful of counties offer local property tax credits worth up to five thousand dollars per year. Massachusetts stands out here in particular.
Massachusetts also has a number of municipal rebate programs that can be combined with state and federal incentives to meaningfully reduce solar costs. These local programs tend to have limited funding pools that get exhausted on a first-come, first-served basis, so homeowners who wait too long after installation sometimes miss the application window entirely. It is worth calling your town or county energy office directly rather than assuming your installer has already checked every local option.
4. Utility company cash rebates
Utility rebates are one of the most commonly missed incentives simply because they are not always advertised loudly. Solar panel rebate amounts these days are usually quite small, often under 500 or 1,000 dollars, though exceptions like Illinois, Oregon, Mississippi, and New York still offer many utility customers rebates worth several thousand dollars. These rebates are typically paid to the installer and used to lower the upfront price, so homeowners sometimes never realize a separate rebate was even part of the deal.
In Oregon specifically, the numbers are concrete. Oregon offers state rebates through two utility providers, with Portland General Electric customers receiving a rebate of 1,200 dollars and Pacific Power customers receiving 900 dollars. It pays to ask your utility directly whether a rebate applies to your account, since these programs are sometimes separate from anything your solar company automatically applies for.
5. Performance-based incentives and SREC payments
This is probably the most overlooked category of all, because it requires an ongoing action rather than a one-time claim. Several states run markets where solar owners earn tradable credits for the electricity their system produces. As of 2026, states with active SREC or performance-payment programs include SREC markets in DC, Delaware, Maryland, Ohio, Pennsylvania, and Virginia, along with mixed programs like Illinois Shines, Massachusetts' SMART, Minnesota's Solar Rewards, and New Jersey's ADI. Homeowners who install solar and never register with these programs are effectively generating a product they simply never sell.
The payments can be substantial if you actually register. Massachusetts' SMART program pays between six and twelve cents per kilowatt-hour generated for ten to twenty years depending on system size and adders, meaning an 8 kW system generating 10,000 kWh annually can earn 600 to 1,200 dollars per year through SMART alone. New Jersey's version is arguably even more generous. In the SuSI program, solar owners can earn and sell SREC-IIs worth 85 dollars for each megawatt-hour their system produces over 15 years. None of this money shows up automatically; homeowners have to register their system with the relevant state program administrator to start collecting it.
6. Battery storage rebates and demand response payments
Homeowners who add battery storage often focus only on backup power and miss a second layer of compensation tied to how utilities manage grid demand. Some states still offer point of sale rebates, such as California's SGIP program and various equity-based rebates in the Northeast, which can provide thousands of dollars in upfront savings for qualifying households. These upfront rebates are separate from anything related to the now-expired federal tax credit and often require a distinct application before installation begins.
There is also ongoing money to be made simply by letting a utility tap your battery during peak demand. Programs like ConnectedSolutions pay homeowners based on the average amount of power their battery contributes during high-demand events. These performance payments arrive year after year, but only for homeowners who actually enroll their battery in the program, which is a step many people never take because it happens well after the initial installation excitement has worn off.
Taken together, these six categories often represent thousands of dollars that never get claimed simply because they require a separate application, a phone call, or a follow-up form that has nothing to do with the solar contract itself. With the federal 30 percent Residential Clean Energy Credit having expired for systems placed in service after December 31, 2025, state and utility-level programs now carry more weight in the overall math than they used to. Homeowners who installed solar before that deadline should also double-check whether they have unused federal credit to carry forward on a future tax return, since that credit can be carried forward indefinitely even though new installations no longer qualify. Checking each of these programs individually, rather than assuming an installer has already accounted for all of them, is often the difference between a good solar deal and a genuinely great one.
