‘Use It or Lose It’: Solar Advocates Say IRS Is Still Writing Checks for Tax Credits

Why It Matters

Capturing the remaining tax credits could inject billions into Pennsylvania’s clean‑energy economy and help avert future grid shortfalls, while delayed action risks forfeiting federal funding.

Key Takeaways

• Pennsylvania could secure >$2 billion in solar tax credits
• Projects <1.5 MW need 5% spend to lock eligibility
• Construction by July 4 secures credit; Dec 31 2027 deadline applies
• IRS still issues checks, often with late‑interest payments

Pulse Analysis

The Inflation Reduction Act’s 30% production tax credit remains a powerful lever for commercial solar, even after the One Big Beautiful Bill Act stripped away residential incentives. While the federal credit is slated to sunset on Dec 31 2025 for new rooftop installations, a separate window stays open for larger projects that begin construction by July 4 and become operational by the end of 2027. This nuance is critical for Pennsylvania entities, as the IRS continues to process claims and even adds interest for delayed payouts, turning bureaucratic lag into a modest financial upside.

In Pennsylvania, the Keystone Research Center’s recent "Use It or Lose It" report highlights a potential 6 GW of new solar capacity that could qualify for more than $2 billion in tax credits if half of the pending interconnection requests materialize. Smaller installations under 1.5 MW must spend at least 5% of total costs to retain eligibility, while larger ventures must demonstrate on‑site work. These thresholds create a clear roadmap for businesses, nonprofits and municipalities aiming to lock in federal support before the July 4 construction deadline, with a fallback provision for projects that become operational by Dec 31 2027.

The broader implication is twofold: first, securing the credits would boost Pennsylvania’s renewable‑energy portfolio, mitigating the risk of brownouts and reducing reliance on aging fossil‑fuel assets. Second, the report’s policy recommendations—expanding federal credits, mandating higher clean‑energy procurement, and streamlining community‑solar approvals—could shape state legislation and influence national discourse on renewable incentives. Stakeholders that act now stand to capture substantial financial benefits while advancing the state’s climate and energy‑security goals.