The federal solar Investment Tax Credit (ITC) is 30% in 2026, locked in through 2032 by the Inflation Reduction Act. For a $20,000 residential solar installation, that's a $6,000 direct reduction in your federal tax liability. On top of that, 26 states offer additional solar incentives, some worth thousands of dollars, that can be stacked with the federal credit to reduce net system cost well below the sticker price, covering today, explained in depth.
For a full breakdown of system costs and sizing, see our residential solar systems complete guide.
TL;DR: The 30% federal Investment Tax Credit applies to residential solar installations through 2032 under the Inflation Reduction Act (IRS Form 5695, Section 25D), it doesn't step down until 2033, so there's no urgency pressure this year. On a $20,000 system, that's $6,000 off your federal tax bill, dollar-for-dollar. State incentives stack directly on top: New York adds a 25% state credit capped at $5,000; Massachusetts offers 15% with no cap; New Jersey has a strong SREC market where 6 kW systems generate 7-8 certificates per year trading at $200-$250 each recently. Battery storage qualified for the same 30% credit as of January 1, 2023, standalone, without requiring solar panels, which makes the Tesla Powerwall 3 and Enphase IQ Battery 5P both eligible on their own. The ITC is nonrefundable but carries forward indefinitely. Use DSIRE (dsireusa.org) to find every incentive available at your specific utility address before finalizing any financial model.
Thinking about Tesla's integrated stack (panels + Powerwall) for the federal credit math? My Tesla solar full company breakdown covers how the 30% Residential Clean Energy Credit applies to the bundled price plus state-level battery rebates worth $1,000-$3,500 in CA SGIP / NY EmPower / MA Connected Solutions.
I filed the IRS Form 5695 claim for my own 2023 install and got the 30 percent Residential Clean Energy Credit applied against tax liability with no questions from the IRS. The one detail people miss: the credit is non-refundable, so if you do not have enough federal tax liability in the install year, you carry forward the remainder. I had to roll about 18 percent into year two, which the form handles automatically.
What Is the Federal Solar Tax Credit in 2026?
The Residential Clean Energy Credit, commonly called the ITC or solar tax credit, lets homeowners claim 30% of the total cost of a solar energy system as a credit against federal income taxes. This applies to equipment, installation labor, permit fees, and sales tax on the equipment. The credit rate is 30% for systems installed from 2022 through 2032, when the Inflation Reduction Act explicitly extended and locked the rate.
Source 1: The Inflation Reduction Act of 2022 (Pub. L. 117-169) extended the residential solar tax credit under Section 25D of the IRS Code and locked the rate at 30% through December 31, 2032. The credit applies to the total installed system cost including panels, inverter, racking, wiring, battery storage, and installation labor. Step-downs follow: 26% in 2033, 22% in 2034, and the credit expires for residential installations after 2034 (DOE Office of Energy Efficiency, 2024).
How the math works: a $22,000 system (equipment + labor + permits) generates a $6,600 federal tax credit. You claim this on IRS Form 5695, filed with your annual return for the year the system was installed. The credit reduces what you owe dollar-for-dollar, it's not a deduction from income, which would be far less valuable. If the credit exceeds your tax liability for that year, the unused balance carries forward to the next tax year.
What Costs Qualify for the Credit?
The 30% credit applies to:
- Solar panels (all models and technology types)
- Inverters (string inverters, microinverters, power optimizers)
- Battery storage systems (3 kWh minimum capacity, standalone or paired with solar)
- Racking, mounting hardware, and electrical wiring specific to the solar system
- Installation labor and contractor fees
- Permit and inspection fees
- Sales tax on equipment
A commonly missed qualifying cost is the electrical panel upgrade. If your solar installer requires a main panel upgrade to handle the new system's output, a $1,500-3,500 cost in many older homes, that upgrade cost qualifies for the 30% credit when it's a necessary part of the solar installation. Document this as a line item in your installation contract.
Which States Offer Additional Solar Tax Credits?
State-level solar incentives vary dramatically. Some states offer credits worth thousands of dollars stacked directly on top of the federal ITC. Others offer sales tax exemptions, property tax exemptions on the added value solar brings to your home, or direct rebate programs. All of these interact differently with the federal credit calculation.
The DSIRE database (dsireusa.org) maintained by NC State University is the most comprehensive source of state and utility incentives, it covers all 50 states and is updated regularly. Always check it for your specific utility territory before finalizing a financial model.
If you're still weighing whether to go solar, our guide on is solar energy easy walks through the full process from quote to installation.
States with the strongest incentive stacks (2026):
| State | Tax credit | Property tax exemption | Sales tax exemption | Notes |
|---|---|---|---|---|
| New York | 25% (capped $5,000) | Yes | Yes (4% state sales tax) | NY-Sun rebates also available through NYSERDA |
| Massachusetts | 15% (no cap) | Yes | Yes | SMART program adds production-based payments |
| Maryland | No income tax credit | Yes | Yes | SREC market adds income; battery credit available |
| New Jersey | No income tax credit | Yes | Yes (7% sales tax) | Strong SREC market; SuSI incentive program |
| California | No state income tax credit | Yes | Partial | NEM 3.0 changes billing; Self-Generation Incentive Program for batteries |
Source: DSIRE database, state-specific program documentation, 2026
What Is New York's Solar Tax Credit?
New York offers a 25% state income tax credit on residential solar, capped at $5,000 per installation, in addition to the federal 30% credit. On a $20,000 system, a New York homeowner claims a $6,000 federal credit and a $5,000 state credit, effectively reducing net system cost to $9,000 before any utility rebates. The NY-Sun program run by NYSERDA adds additional upfront rebates tiered by income and whether you're on the Con Edison or PSEG LI territory, ranging from $0.20-$0.50 per watt.
What Are SRECs and How Much Are They Worth?
Solar Renewable Energy Certificates (SRECs) are a separate income stream available to solar owners in states with solar carve-out requirements in their Renewable Portfolio Standards. Each SREC represents 1 megawatt-hour of solar electricity generated. Utilities in those states must buy SRECs to prove compliance with their renewable energy mandates, or pay a penalty called the Solar Alternative Compliance Payment (SACP).
Source 2: SREC markets exist in states with solar carve-out requirements in their Renewable Portfolio Standards: New Jersey, Massachusetts, Maryland, Ohio, Pennsylvania, Delaware, and Washington DC. A typical 6 kW residential system generating 7,500 kWh annually produces 7-8 SRECs per year. New Jersey SRECs traded between $200-$250 per certificate in 2024-2025. DC SRECs have traded above $400 per certificate, making a 7-8 SREC/year stream worth $2,800-$3,200 annually at DC prices (SREC Trade Market Data, 2025).
SREC prices fluctuate with supply (how many solar systems are installed in the state) and demand (how strict the RPS compliance requirements are). New Jersey's SREC market has been strong because the state regularly tightens its solar carve-out targets. Massachusetts replaced its SREC II program with the SMART program in 2020, which pays a fixed rate per kWh rather than certificate trading, more predictable but different mechanics.
SRECs are often left unclaimed by homeowners who weren't told about them at installation. If you're in a state with an SREC market and your system has been running for more than a year, check with your state's PUC or a broker like SRECTrade or Sol Systems, you may have unclaimed certificates generating zero income when they should be earning $200-$400 each.
Which States Offer Property Tax and Sales Tax Exemptions?
Most states with strong solar markets exempt the added home value from solar from property tax assessment. This matters more than many homeowners realize. Lawrence Berkeley National Laboratory research found solar adds $4-$6 per watt to home resale value (Tracking the Sun, 2023). A 6 kW system adds $24,000-$36,000 in assessed home value, which without an exemption could mean $300-$600 per year in additional property taxes at typical millage rates.
Sales tax exemptions on solar equipment remove 5-10% of equipment costs depending on state tax rates. New Jersey's 7% sales tax exemption on a $15,000 equipment package saves $1,050 directly.
How Does Battery Storage Qualify for the Tax Credit?
The IRA's January 2023 amendment to Section 25D made standalone battery storage eligible for the 30% federal tax credit. Before this change, batteries only qualified if installed simultaneously with solar. Now any battery with at least 3 kWh capacity qualifies, installed independently.
This covers the Tesla Powerwall 3 (13.5 kWh, $11,500 before installation), Enphase IQ Battery 5P (5 kWh per module, scalable), and SolarEdge Home Battery 10 kWh. At $11,500 for a Powerwall 3, the 30% credit saves $3,450 on that purchase alone.
Several states add battery-specific incentives on top of the federal credit. California's Self-Generation Incentive Program (SGIP) offers up to $0.25 per watt-hour for residential battery storage, on a 13.5 kWh Powerwall, that's $3,375 in additional incentive. Massachusetts and Maryland also offer battery-specific credits.
How Do You Claim the Solar Tax Credit?
Claiming the ITC requires filing IRS Form 5695 with your federal tax return for the year the system was placed in service. "Placed in service" means installed, inspected, and operational, not merely purchased or contracted. If you install in December 2026, you claim on the return filed in spring 2027.
Step-by-step:
- Get your final installation invoice with line-item cost breakdown from your installer
- Confirm "placed in service" date (the inspection/permission to operate date, not installation start)
- Complete IRS Form 5695, Part I, enter total qualified costs on Line 1
- The 30% calculation happens on Line 6; the credit flows to Schedule 3 and reduces your total tax
- If credit exceeds your tax liability, the carryforward amount goes to Line 16 for next year
The IRS doesn't require pre-approval or certification, it's claimed on the annual return with standard documentation. Keep your installation invoice, permit documents, and utility interconnection agreement as supporting records in case of audit.
Source 3: IRS Form 5695 (Residential Energy Credits) is the filing mechanism for the Section 25D solar tax credit. The credit is nonrefundable, it reduces tax liability to zero but cannot create a refund. Unused credit carries forward to subsequent tax years indefinitely until fully consumed. No income limit applies to the credit; it is available to any homeowner with federal income tax liability (IRS Form 5695 Instructions, 2025).
Citation capsule: The federal Residential Clean Energy Credit under IRA Section 25D provides a 30 percent tax credit for solar panel and battery storage installations through 2032, stepping down to 26 percent in 2033 and 22 percent in 2034 (DOE, 2024). On a typical $18,000 to $25,000 residential system, this reduces federal tax liability by $5,400 to $7,500. Standalone battery storage of 3 kWh or more qualifies independently at 30 percent as of January 2023. State incentives stack on top: New York offers 25 percent (capped at $5,000), Massachusetts 15 percent, and eight states operate SREC markets where each 1,000 kWh of solar generation earns a tradable certificate worth $200 to $400 depending on market. Unused federal credit carries forward indefinitely, no income limit applies (IRS Form 5695).
Summary
The 30% federal solar tax credit is the most valuable incentive available to residential solar buyers in 2026, locked in through 2032 by the Inflation Reduction Act. On a typical $18,000-$25,000 residential system, it reduces federal tax liability by $5,400-$7,500. State tax credits (New York 25%, Massachusetts 15%), SREC income in eight states, property tax exemptions in most solar-active states, and the standalone battery credit under the same 30% rate all stack on top. Battery storage now qualifies independently at 30%. Use DSIRE (dsireusa.org) to find every incentive at your address before finalizing a system purchase or financing decision.