The federal solar roof tax credit in 2026 is the Residential Clean Energy Credit under Internal Revenue Code Section 25D. It pays 30% of qualifying solar costs through tax year 2032, then steps down to 26% in 2033, 22% in 2034, and expires after 2034 unless Congress extends it. The credit is non-refundable, claimed on IRS Form 5695, and applies to solar electric, solar water heating, fuel cell, small wind, geothermal, and battery storage installations.
This guide walks through what qualifies and what doesn’t (this is where most homeowners get tripped up), how to claim the credit step by step, the state (see our solar policy news 2026)-level stacks that turn a 30% federal credit into 50%+ effective coverage in the right markets, and the SREC programs in NJ, MA, IL, MD, PA, and OH that pay you for every megawatt-hour your system produces.
What the 30% Federal ITC Actually Covers
Section 25D is broad but specific. The credit applies to the total cost of installing qualifying property, including labor, permits, design fees, sales tax, and the equipment itself. The IRS guidance is in Notice 2013-70 and updates through 2024, plus the Inflation Reduction Act provisions that extended and expanded the credit through 2034.
Qualifying property includes solar panels (photovoltaic (see our types of solar energy) modules), inverters, racking, electrical work tied to the solar install, energy storage batteries (3 kWh capacity or larger), solar water heating systems certified by the Solar Rating Certification Corporation, geothermal heat pumps, small wind turbines under 100 kW, and fuel cells producing at least 0.5 kW. Solar shingles like Tesla Solar Roof and GAF Energy Timberline Solar qualify for the solar portion of the system.
What does not qualify: the structural cost of the roof underneath solar panels in most cases, landscaping or site work unrelated to the solar install, financing fees and interest, extended warranty purchases, and any portion of the system used for business or rental property (those go through Section 48 commercial credits instead).
The roof question is where Tesla Solar Roof and GAF Energy Timberline Solar get interesting. The IRS allows the solar tile portion to qualify for the credit, but the non-active “dummy” tiles, underlayment, decking, and structural work do not. Tesla typically allocates 50% to 65% of the total system cost as solar-qualifying. GAF allocates roughly 45% to 60%. Get the allocation in writing from the installer before you file. The IRS has audited solar shingle credits in 2024 and 2025 where the homeowner claimed 100% of the roof cost. They lose every time.
For rack-mounted panels on a new roof, the underlying roof is not credit-eligible. Only the solar equipment and installation labor for the solar portion qualify. If you replaced an asphalt shingle roof for $12,000 and added rack-mounted panels for $20,000, the credit applies to the $20,000 only. The same logic applies to questions about whether a new roof is tax deductible on its own (almost never for owner-occupied residential).
The Step-Down Schedule
The Inflation Reduction Act of 2022 extended the credit at 30% through 2032, then phased it down. The exact schedule in current law:
Tax years 2022 through 2032: 30% credit. Systems placed in service during these years get the full 30% on qualifying costs. “Placed in service” means installed, inspected, and operational. A system installed on December 28 of a tax year qualifies for that year’s credit if it passed inspection and was producing power by December 31.
Tax year 2033: 26% credit. Same scope, lower percentage.
Tax year 2034: 22% credit. The final scheduled step.
After 2034: zero unless Congress extends. There is no current proposal to extend.
The timing math matters for any homeowner sitting on the fence. A $30,000 solar system installed in 2032 returns $9,000 in federal credit. The same system installed in 2034 returns $6,600. Waiting two years costs $2,400 in lost credit, which has to be offset by some combination of falling system prices, higher local incentives, or rising electricity rates.
Solar equipment prices have fallen consistently for two decades. Installation labor has not. The blended average installed cost for residential rack-mounted systems has hovered between $2.50 and $3.50 per watt since 2022 and is unlikely to drop dramatically before 2034. The federal credit is the biggest single lever on solar economics, and waiting for prices to fall further is almost always the wrong move once you’ve decided to install.
How to Claim: IRS Form 5695 Step by Step
The Residential Clean Energy Credit is claimed on IRS Form 5695, Part 1. The form is one page, takes about 15 minutes to complete, and runs through TurboTax, H&R Block, FreeTaxUSA, and every other tax software.
Line 1: Qualified solar electric property costs. This is your total qualifying cost for the photovoltaic system, including equipment, installation, electrical work, and any battery storage of 3 kWh or larger that’s connected to the solar system.
Lines 2 through 5: Other clean energy property. Solar water heating, fuel cell, small wind, geothermal each get their own line. Most residential solar installs use only Line 1.
Line 6a and 6b: Subtotal and percentage. 6a adds up all qualifying costs. 6b multiplies by the applicable percentage (30% through 2032, stepping down after).
Line 12: Credit carried forward from prior years. If you couldn’t use the full credit last year, it carries forward. This is the line that catches up unused credit.
Line 13: Total credit before tax liability limitation.
Line 14: Tax liability limitation. The credit is non-refundable. You can’t get back more than your actual federal income tax liability for the year. If you owe $4,000 and your credit is $6,000, you take $4,000 this year and carry the remaining $2,000 forward to next year. The carryforward has no expiration through 2034.
Line 15: Credit allowed this year. The smaller of total credit or tax liability. This number flows to Schedule 3, Line 5a, then to your Form 1040.
Required documentation: keep the installer invoice, payment receipts, manufacturer specification sheets for major equipment, permit documents, and the utility interconnection agreement. The IRS doesn’t ask for these with the return but expects them in an audit. Store everything for 7 years minimum.
Common mistakes: claiming the full Tesla Solar Roof cost without separating solar from non-solar tiles (Tesla provides an allocation letter on request), claiming a roof replacement as qualifying when it’s not, missing the 3 kWh threshold for battery eligibility, and filing under Form 3468 (the commercial Section 48 form) instead of Form 5695.
State Tax Credits That Stack on Federal
Multiple states offer their own income tax credits or rebates on top of the federal 30%. These stack, meaning a $30,000 system in the right state can return $12,000 to $15,000 in combined federal and state incentives.
New York: NY-Sun Megawatt Block program plus 25% state tax credit (capped at $5,000). The state credit is on Form IT-255, claimed in the year the system is placed in service. NY-Sun provides upfront rebates that vary by region and block availability. Combined incentives in New York routinely cover 45% to 55% of system cost.
Massachusetts: 15% state tax credit (capped at $1,000) plus SMART program income. The state credit is on Schedule SC. SMART (Solar Massachusetts Renewable Target) pays a fixed incentive per kWh produced for 10 years, varying by utility territory and system size. Combined value over the 10-year SMART term plus federal credit often exceeds 60% of system cost in eligible utility territories.
South Carolina: 25% state tax credit (capped at $3,500 per year, $35,000 lifetime). Claimed on TC-38. Carryforward of 10 years for unused credit.
Hawaii: 35% state tax credit (capped at $5,000 per system). Claimed on Schedule CR. Hawaii’s high electricity rates make solar economics aggressive even before incentives.
Arizona: 25% state tax credit (capped at $1,000). Claimed on Form 310.
New Mexico: 10% state tax credit (capped at $6,000). Claimed on Form RPD-41318.
Several states offer rebates rather than tax credits, including New Jersey (TREC program), Connecticut (Residential Solar Investment Program), and Illinois (Illinois Shines). The rebate amount typically counts against the IRS-eligible cost basis for the federal credit, meaning your 30% federal credit calculates on the post-rebate amount, not the gross system cost.
Property tax exemptions for solar are available in roughly 30 states. The exemption removes the added value of the solar system from the property tax assessment, which can be worth $200 to $800 per year in property tax savings depending on local rates. Sales tax exemptions on solar equipment exist in another 25+ states.
SREC Markets: NJ, MA, IL, MD, PA, OH
Solar Renewable Energy Certificates are a separate revenue stream from any tax credit. The system produces one SREC for every megawatt-hour (1,000 kWh) of electricity generated. SRECs are sold on a state-specific market to utilities that are required to source a percentage of their power from solar under state Renewable Portfolio Standards.
The SREC price varies dramatically by state and trades on real-time spot markets plus longer-term contracts. As of 2026:
New Jersey TREC (Transitional Renewable Energy Certificate): The successor to legacy SREC. Pays a fixed rate per MWh produced, $91.20 for residential systems through 2026 (subject to BPU adjustment). A 7 kW system producing 9 MWh per year earns about $821 in TREC income annually for 15 years. Total: $12,315 in TREC revenue over the program life.
Massachusetts SMART: Tariff-based incentive paying a fixed rate per kWh produced for 10 years. Rates vary by utility territory (Eversource, National Grid, Unitil) and block. Typical residential value: $1,000 to $1,800 per year for a 7 kW system over 10 years.
Illinois Shines (Adjustable Block Program): Pays for SRECs upfront over 7 years. As of 2026, residential rates range from $40 to $80 per SREC depending on block availability. A 7 kW system producing 9 MWh per year generates approximately $2,500 to $5,000 in SREC income over the 7-year payment period.
Maryland SREC: Traditional SREC market, prices ranging $60 to $90 per SREC depending on quarterly market conditions. A 7 kW system generates roughly $540 to $810 per year in SREC revenue, sold either spot or via aggregator contracts.
Pennsylvania AEPS: Lower SREC values than NJ or MD, typically $25 to $55 per SREC. The Pennsylvania market is more volatile and has shorter contract availability.
Ohio SREC: Smaller market, prices around $5 to $15 per SREC. Less impactful on residential economics but still incremental.
SREC income is generally federally taxable as ordinary income. State tax treatment varies. Sell-side aggregators like SRECTrade, Knollwood Energy, and Sol Systems handle the registration and sale process for a percentage cut, typically 10% to 25% of the SREC value. DIY sale is possible but requires PJM-GATS or similar state registry registration.
Battery Storage: 3 kWh Threshold
The Inflation Reduction Act expanded the 30% Section 25D credit to cover standalone battery storage of 3 kWh or larger, even when installed without solar. This matters because the prior version of the credit only covered batteries that were “charged exclusively by solar,” which created compliance headaches and excluded grid-charged batteries entirely.
Under current law, a 10 kWh Tesla Powerwall installed standalone qualifies for 30% federal credit, $4,500 to $6,000 typical credit on a $15,000 to $20,000 installed system. The same battery installed with solar gets the same credit.
What qualifies as battery storage for credit purposes: lithium-ion chemistry, lithium iron phosphate (LiFePO4), and other electrochemical storage systems sized 3 kWh or larger. Lead-acid backup batteries on a small inverter typically don’t meet the 3 kWh threshold and don’t qualify.
Installation labor for the battery is credit-eligible, as is the inverter or hybrid inverter required to integrate it with the home electrical system. Smart panels like Span and electrical service upgrades required to support battery installation also qualify when documented as part of the battery scope of work.
Net Metering: The Other Revenue Stream
Net metering is the utility billing arrangement that lets you export excess solar production to the grid and receive credit toward future consumption. Net metering is a state and utility-level regulation, not a federal tax matter, but it determines the actual dollar value of every kWh your system produces above your home’s instantaneous consumption.
States with strong 1:1 net metering (you receive full retail rate credit for exported kWh): California (NEM 2.0 legacy through 2026, NEM 3.0 for new systems with lower export rates), New York, Massachusetts, New Jersey, Illinois, Maryland, and most of the Northeast and Mid-Atlantic.
States with reduced net metering or net billing (you receive wholesale or avoided-cost rate for exported kWh, which is 2x to 5x lower than retail): Arizona, Nevada (post-2017 systems), South Carolina (post-2022 systems), Florida (with limits), and increasingly more states as utility lobbying succeeds.
The net metering reality check is critical to system sizing. If your utility pays wholesale rates for export (5 to 8 cents per kWh) while charging retail (15 to 25 cents per kWh) for grid consumption, you want to size the system to match daytime consumption, not annual consumption. Battery storage becomes economically necessary in those markets to capture the retail-vs-wholesale arbitrage.
For state-by-state net metering breakdown, see our net metering explained guide.
The Tax Liability Limitation: Why Some Homeowners Lose the Credit
The Residential Clean Energy Credit is non-refundable. The credit reduces your federal income tax liability but cannot create a refund larger than your actual tax owed. If your federal tax liability for the year is $4,000 and your credit is $9,000, you take $4,000 this year. The remaining $5,000 carries forward to the next tax year, where it offsets that year’s liability, and so on until used up or until 2034 (whichever comes first).
This catches retirees, low-income households, and anyone with substantial deductions reducing their taxable income. The credit is still claimable, just spread over multiple years.
The workaround for households with limited tax liability: solar leases and Power Purchase Agreements (PPAs) where a third party owns the system, claims the credit themselves, and passes some of the savings through as a lower electricity rate. The economic value to the homeowner is lower than direct ownership, but it works when ownership math doesn’t.
The math reality: solar leases and PPAs leave roughly 40% to 60% of the system’s lifetime value on the table compared to ownership. For a homeowner with a $200,000+ federal AGI and $30,000+ in federal tax liability, ownership is almost always the better answer. For households with a $40,000 AGI and $1,500 in tax liability, lease or PPA can make sense.
Common Mistakes That Cost You the Credit
Filing the wrong form. Section 25D residential credit is Form 5695, Part 1. Section 48 commercial credit is Form 3468. Rental property owners frequently file 5695 incorrectly because the property isn’t their primary or secondary residence.
Claiming costs in the wrong tax year. The credit applies to the year the system is “placed in service.” A system installed in December 2025 but not commissioned and connected to the grid until February 2026 belongs on the 2026 return, not 2025. Document the interconnection date, not the install date.
Claiming rebates as part of cost basis. State rebates and utility incentives reduce the cost basis for the federal credit. A $25,000 system with a $5,000 state rebate has a $20,000 federal credit basis, not $25,000.
Stacking labor costs that aren’t qualifying. Roof replacement labor, structural work, tree removal to clear shading, and landscaping are not credit-qualifying even when done as part of the solar project. Solar-specific electrical work, permits, and design fees do qualify.
Missing the battery storage threshold. Batteries below 3 kWh don’t qualify under Section 25D. Confirm the battery nameplate capacity in writing before filing.
Claiming the credit for a home you don’t own. The credit goes to the property owner, not the resident. Rental tenants who pay for solar installation cannot claim the credit. Owner-financed installations on someone else’s property require Section 48 commercial treatment instead.
What to Do This Year
If you’re installing in 2026, your credit is locked at 30% on qualifying costs. File Form 5695 with your 2026 return in early 2027. Document everything.
If you’re planning to install in the next 5 years, the 30% rate holds through 2032. There’s no urgency from a federal credit standpoint to install before a specific date inside that window. State incentive programs do have urgency: NJ TREC, MA SMART, and IL Shines all have block-based capacity that closes when filled. Run the state-specific incentive math before delaying.
If you’re considering Tesla Solar Roof, GAF Energy Timberline Solar, or rack-mounted panels, the 30% credit applies to all three. The credit doesn’t change the basic solar shingles vs panels decision. It changes the dollar amount on both sides of that equation proportionally.
For installer selection, see our how to choose solar installer guide. For system sizing, the solar installation cost 2026 breakdown and best solar panel brands review cover the equipment side. For full warranty stack analysis, see solar roof warranty 2026.
The 30% federal solar credit is the most valuable residential energy incentive in US tax code. The state and SREC stacks make it more valuable in the right markets. The math is straightforward when you separate qualifying costs from non-qualifying costs and file the right form. Get the documentation right at install, file Form 5695 correctly, and don’t leave money on the table. The full set of related solar and roofing topics is indexed in our learn library.