Shifting Timelines: Navigating Solar & Wind Under the OBBB Act
On July 4, 2025, the OBBB Act (One Big Beautiful Bill Act) was signed into law, bringing sweeping revisions to federal tax incentives for clean energy projects. While it retains core support for solar and wind, the legislation introduces significantly tighter eligibility windows and administrative hurdles, triggering a time-sensitive scramble for developers aiming to qualify under the old rules.
Two Critical Timeframes That Define the Future
The revised timeline imposes two major construction deadlines, each with distinct implications for tax credit eligibility:
Begin Construction by December 31, 2025
Projects that start construction by this date remain eligible for the full Investment Tax Credit (ITC) and Production Tax Credit (PTC) under the original Inflation Reduction Act (IRA) framework. These projects can sidestep emerging restrictions, such as new bans on equipment sourced from foreign entities of concern—primarily targeting components linked to Chinese supply chains.
Begin Construction by July 4, 2026
Projects starting within this extended window escape a new “in-service by end-2027” requirement. However, any project that starts after this July 2026 deadline must also be completed and grid-connected by December 31, 2027 to qualify for tax benefits.
In short, two lifelines remain. Both demand aggressive scheduling, fast permitting, and smart procurement strategies.
Why the Change Matters: A Compressed Horizon
From 2032 to 2027: A Sharply Accelerated Phase-Out
Originally, the IRA extended renewable tax credits through 2032. The OBBB Act collapses this window dramatically:
- Full credits are now only guaranteed for projects beginning by December 31, 2025.
- Projects starting between that date and July 4, 2026 still qualify—but only if they are operational by December 31, 2027.
- After that, the tax credit structure for solar and wind effectively vanishes.
A Princeton University study projects that this accelerated phase-out could reduce projected solar and wind capacity additions by up to 70 GW by 2030, potentially increasing average household energy costs by $165 per year.
Supply Chain Strain: Navigating the FEOC Rule
Starting in 2026, projects involving entities classified as a “foreign entity of concern” (FEOC)—particularly suppliers tied to China—will be disqualified from federal tax credit eligibility. This further compresses the development timeline and complicates procurement for solar panels, inverters, and other components.
Developers must now proactively assess and restructure their supply chains to maintain eligibility, a process that can add weeks or months to project timelines.
Permitting Bottlenecks on Federal Lands
New administrative provisions under the OBBB Act introduce additional friction:
- Solar and wind projects on federal lands and waters now require direct review and personal sign-off by the Secretary of the Interior.
- This adds layers of bureaucratic oversight and delays—potentially jeopardizing projects that might otherwise meet construction deadlines.
As a result, developers are increasingly prioritizing non-federal lands where permitting pathways may be less encumbered.
What Developers Should Do Now
Given the compressed timeline, a proactive strategy is critical. Developers should:
- Accelerate project planning: Obtain environmental permits, secure financing, finalize procurement, and begin ground-breaking by December 31, 2025.
- Audit supply chains: Identify and eliminate FEOC-linked components before 2026 to preserve credit eligibility.
- Target the July 2026 buffer: If construction can’t start by end-2025, aim for the second window—but ensure completion by the end of 2027.
- Utilize elective pay: Leverage the IRA’s elective pay provision, which allows non-taxable entities (like municipalities or nonprofits) to convert credits into direct payments.
- Avoid federal land: Wherever possible, select sites on private or state-owned land to avoid federal delays.
A Broader Climate and Energy Impact
The implications go beyond developers and investors. Slower deployment of renewables under the new framework may lead to:
- A reduction of up to 140 GW in solar and 160 GW in wind capacity additions by 2035.
- A potential increase of $28 billion per year in aggregate U.S. household energy costs by 2030, due to higher reliance on fossil fuels.
Strategic losses in global competitiveness, as China continues to scale clean energy infrastructure and technology exports—potentially outpacing the U.S. in innovation and grid modernization.
Residential and Community Impacts
In addition to changes affecting utility-scale projects, the OBBB Act also repeals several key residential and commercial energy incentives, including:
- Section 25D: Tax credit for rooftop solar systems (expires December 31, 2025)
- Section 25C: Home energy efficiency improvement credits (expires December 31, 2025)
- Section 179D: Commercial energy efficiency deductions (expires June 30, 2026)
- Section 45L: Credits for new energy-efficient homes (expires June 30, 2026)
In the absence of these incentives, local businesses and homeowners face diminished motivation to invest in clean energy upgrades, slowing the adoption of distributed energy technologies and reducing long-term resilience.
Final Verdict: A Race Against Time
The new landscape demands speed, clarity, and precision. Here’s the bottom line:
Strategy | Deadline | Benefit |
Begin construction | Dec 31, 2025 | Lock in full IRA credits |
Secure conditional approvals | July 4, 2026 | Avoid “in-service” rule |
Finish construction | Dec 31, 2027 | Maintain tax credit eligibility |
Use elective pay | Ongoing | Convert credits to cash |
Avoid federal lands | Ongoing | Prevent permitting delays |
Conclusion: Urgency Is the New Normal
The OBBB Act—passed under the previous administration—fundamentally reshapes the federal support framework for renewable energy. With major tax credits expiring years earlier than planned, developers face a steep, fast-moving challenge.
Yet for those who move decisively, opportunity remains:
- Break ground by December 31, 2025 for maximum certainty.
- Or hit the July 4, 2026 threshold and complete construction by end of 2027.
In both cases, success hinges on navigating bureaucracy, avoiding FEOC pitfalls, and acting without delay.
This isn’t just a policy shift—it’s a structural reset. In the new landscape, speed is strategy, and timing is everything. Need help nagicating these changes? Contact us today!
