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The 30% federal Investment Tax Credit for solar leases and PPAs ends on July 4, 2026. After that date, lease rates jump 25-40%. The residential credit (25D) is already dead. This is the last federal solar benefit standing.
Days Remaining
until Section 48 ITC expires
The Section 48/48E Investment Tax Credit (ITC) provides a 30% federal tax credit for solar energy systems owned by businesses (third-party owners). Under the OBBBA law signed July 4, 2025, projects must begin construction before July 4, 2026 to qualify.
This deadline matters for homeowners because it directly affects solar lease, PPA, and ESA pricing. The financing company that owns your solar system claims the 30% ITC and passes those savings to you as a lower monthly rate. After July 4, 2026, that credit disappears and lease/PPA rates increase 25-40%.
The residential solar tax credit (Section 25D) already expired on December 31, 2025. Section 48 is the last federal solar benefit available to homeowners through third-party ownership structures.
A plain-English explanation of what ends, what stays, and why this date matters more than any other in the history of residential solar.
The IRS provides two safe harbors for meeting the “begin construction” requirement. Meeting either one by July 4, 2026 qualifies the project for the full ITC:
Meaningful physical work of a significant nature at the project site or off-site at a factory. Examples: installing racking, mounting panels, pouring concrete for ground mounts.
Pay or incur at least 5% of the total project cost. For a $25,600 system, that is $1,280 in equipment orders or deposits. Most financing companies use this method because it is easier to document and less weather-dependent.
Whether you are affected depends entirely on how you plan to go solar. Here is the breakdown.
The residential ITC (Section 25D) expired December 31, 2025. Your federal tax benefit is already $0 whether you buy before or after July 4, 2026.
The financing company owns your system and claims the 30% ITC. That credit subsidizes your monthly payment. When it expires, your rate goes up 25-40%.
Concert Finance owns the system and claims the ITC + MACRS + FEOC bonus. Propel pricing depends on these credits. Available in ME and TX only.
Since January 1, 2026, homeowners who buy solar with cash or a loan receive $0 in federal tax credits. But leases and PPAs use a different tax code section. Here is exactly how Section 48 savings reach you.
You do not buy the system. A financing company (TPO) purchases and owns the solar equipment.
Because they own the system, they file IRS Form 3468 and claim the tax credit. On a $25,600 system, that is $7,680.
5-year accelerated depreciation plus 20% bonus in 2026. Adds roughly $4,000-5,000 in tax benefits.
The TPO receives $11,680-$12,680 in tax benefits. This is why your lease rate is 25-40% lower than it would be otherwise.
Section 48 says the credit goes to the owner of the solar energy property. When you buy with cash, you are the owner and you need Section 25D (now expired). When you lease, the financing company is the owner and they use Section 48 (available until July 4, 2026). This is not a loophole. It is the intended structure of the tax code. The third-party ownership model was specifically designed to make solar accessible to homeowners who cannot use tax credits directly.
Here is a concrete example using a typical 8 kW residential system. The numbers speak for themselves.
Section 48 ITC Available
This $14,340 in combined tax benefits is why the financing company can offer you a lease at $0.13-0.16/kWh instead of $0.20+/kWh. The savings are baked into your rate.
Section 48 ITC Expired
Without the ITC and FEOC bonus, the financing company loses $11,540 in tax benefits. That cost gets passed to you as a 25-40% higher lease or PPA rate.
Solar installation takes 8-12 weeks from quote to construction start. Here is the realistic timeline and what you need to do at each stage.
Full installer capacity. 2-4 week scheduling. Ample time for permitting and interconnection.
16+ weeks before deadline
Installer calendars filling. 4-8 week scheduling. Permitting offices see higher volume.
8-12 weeks before deadline
Must have signed agreement by now. Equipment procurement starts. FEOC panels may be limited.
4-8 weeks before deadline
Only viable if already in pipeline. Some installers stop new projects. Permitting must be expedited.
<4 weeks before deadline
Construction must have begun (5% safe harbor or physical work test). No exceptions.
Day zero
Complete the IQ wizard. We design your system and provide pricing within 48 hours.
Sign your lease, PPA, or Propel ESA. Financing company begins ITC qualification process.
We handle all permitting, engineering, and utility interconnection paperwork.
Equipment ordered, 5% safe harbor met. Your project qualifies for Section 48 ITC.
Takes 5 minutes. No commitment required.
The deadline affects every state differently based on utility rates, state incentives, and lease economics. Here is what changes in each NuWatt service area.
SMART 3.0 incentive stacks with Section 48. Highest utility rates maximize lease value.
Massachusetts solar guideSecond-highest electricity rates in the nation. Net metering at full retail makes leases extremely competitive.
Connecticut solar guideADI/SREC-II payments ($85.90/MWh) add revenue. 100% sales and property tax exempt.
New Jersey solar guideNo state rebate (SB 303 repealed). NEM 2.0 credits at ~85% of retail. Lease is the best remaining path.
New Hampshire solar guideNuWatt Propel ESA available (prepaid, $0 down, 7-year ownership transfer). Concert Finance owns system. ME + TX only.
Maine solar guideREG program ($0.27/kWh for 15-20 years) + REF rebate ($0.65/W). Strongest state incentive stack in NE.
Rhode Island solar guideNuWatt Propel ESA available. Deregulated market means rates are volatile. Locking in a fixed lease rate provides price certainty.
Texas solar guidePropel is a prepaid Energy Service Agreement (ESA) with $0 down. Concert Finance owns the system and claims the Section 48E ITC + FEOC domestic content bonus + MACRS depreciation. After 7 years, ownership transfers to you. Propel requires FEOC-compliant Silfab panels. Both the ITC and the FEOC compliance deadline are July 4, 2026. After that date, Propel pricing becomes significantly less competitive and the program's viability is uncertain.
Learn about NuWatt PropelThe base 30% ITC is not the only credit at stake. Bonus adders can push the total credit to 50% or higher. All expire on the same deadline.
Available when panels and components meet FEOC (Foreign Entity of Concern) compliance. Silfab panels, manufactured in the US, qualify. This bonus brings the effective ITC from 30% to 40%.
Available when the project is in a qualifying energy community: brownfield sites, areas near retired fossil fuel plants, or census tracts with high fossil fuel employment. Many areas in ME, TX, NJ, and parts of MA and CT qualify.
Modified Accelerated Cost Recovery System allows the system owner to depreciate the solar equipment over 5 years. In 2026, the first-year bonus is 20%. In 2027, it drops to 0%. This is a separate benefit from the ITC but compounds the financial loss of waiting.
A project in an energy community using FEOC-compliant panels can stack the base 30% ITC + 10% domestic content + 10% energy community = 50% ITC. Add MACRS depreciation and the TPO recovers more than half the system cost through tax benefits alone.
This is not hypothetical. These are the concrete consequences of waiting past the deadline.
Without the 30% ITC, financing companies must charge more to maintain margins. A lease that was $130/mo becomes $165-182/mo.
A PPA at $0.14/kWh rises to $0.20-0.22/kWh. Over 20 years on an 8 kW system producing 10,000 kWh/year, that is $12,000-16,000 more.
The Propel program depends on Section 48E ITC + FEOC bonus + MACRS. Without these credits, the economics may not work.
The 10% FEOC bonus disappears entirely. Panels manufactured in the US no longer provide a pricing advantage for leases.
Projects placed in service in 2027 get 0% first-year bonus depreciation, versus 20% in 2026. This reduces TPO tax benefits by ~$1,300.
Some third-party solar companies may exit the market entirely without ITC subsidies. Less competition means less favorable terms for homeowners.
A comprehensive comparison of every financial factor for an 8 kW residential solar system.
| Factor | Before July 4, 2026 | After July 4, 2026 |
|---|---|---|
| Section 48/48E ITC | 30% | 0% |
| Domestic Content Bonus | +10% | N/A |
| Energy Community Bonus | +10% | N/A |
| MACRS Bonus Depreciation | 20% | 0% (2027) |
| TPO Tax Benefits (8 kW) | $14,340 | $2,800 |
| Typical Lease Rate | $0.13-0.16/kWh | $0.19-0.24/kWh |
| Monthly Lease Payment | ~$130/mo | ~$175/mo |
| PPA Rate | $0.12-0.16/kWh | $0.18-0.24/kWh |
| 20-Year Lease Cost | ~$31,200 | ~$42,000 |
| Savings vs Utility | 40-55% | 15-30% |
| Section 25D (Cash/Loan) | $0 (expired) | $0 (expired) |
| State Incentives | Available | Still available |
Everything homeowners need to know about the July 4, 2026 solar tax credit deadline.
The Section 48/48E Investment Tax Credit for third-party owned solar systems expires on July 4, 2026. Projects must "begin construction" before that date, which means either performing meaningful physical work at the site or paying at least 5% of total project costs. After July 4, 2026, new solar lease, PPA, and ESA agreements cannot benefit from the 30% federal ITC.
No. The residential solar tax credit (Section 25D) already expired on December 31, 2025, under the OBBBA law signed July 4, 2025. Whether you buy cash or finance with a loan, your federal tax benefit is already $0. The July 4, 2026 deadline only affects third-party owned systems like leases, PPAs, and ESAs where the financing company claims the credit.
The IRS defines "begin construction" in two ways. The Physical Work Test requires meaningful physical work at the project site, such as installing racking or mounting panels. The 5% Safe Harbor requires the taxpayer to pay or incur at least 5% of the total project cost. For a $25,600 system, that is $1,280 in equipment orders or deposits. Most financing companies use the 5% Safe Harbor method.
Industry projections show lease and PPA rates increasing 25-40% after the Section 48 ITC expires. For a typical 8 kW system, this translates to roughly $40-80 more per month on a lease, or an additional $0.06-0.08 per kWh on a PPA. The exact increase depends on the financing company, your state, and whether bonus adders (domestic content, energy community) were included in the original pricing.
Section 48 is the traditional Investment Tax Credit for solar and other energy projects. Section 48E is the technology-neutral clean energy credit introduced by the Inflation Reduction Act. Both provide the same 30% base credit for solar installations. Both expire on July 4, 2026 under the OBBBA legislation. For homeowners considering a lease or PPA, the distinction is technical and the impact is identical: after July 4, 2026, neither credit is available for new projects.
Yes, solar installations will continue after the deadline. However, lease and PPA rates will be significantly higher because financing companies can no longer offset costs with the 30% federal ITC. Cash and loan purchases are unaffected since the residential credit (25D) already expired. State incentives like SMART (MA), REG (RI), ADI (NJ), and net metering programs remain available regardless of the federal deadline.
The typical timeline from initial quote to construction start is 8-12 weeks. This includes site survey (1-2 weeks), engineering and design (1-2 weeks), permitting (2-4 weeks), and equipment procurement (2-3 weeks). To safely meet the July 4, 2026 deadline, you should begin the process no later than mid-April 2026. Starting in March or earlier gives the most flexibility for permitting delays or equipment availability issues.
The FEOC (Foreign Entity of Concern) compliance requirement determines eligibility for the 10% domestic content bonus on top of the base 30% ITC. Panels manufactured by companies without foreign entity ties (like US-made Silfab panels) qualify. This bonus also expires July 4, 2026, along with the base ITC. After that date, the domestic content adder is no longer available for new projects.
Complete guide to leasing vs buying solar in 2026.
How Section 48 works for homeowners who lease solar.
Deep dive into the technology-neutral clean energy credit.
The math behind why leasing now beats buying with no ITC.
Every day you wait is one fewer day to complete permitting, engineering, and equipment procurement. Start your free quote today and secure the 30% ITC for your solar lease or PPA.