The Internal Revenue Service has published the inflation adjustment factor that sets how much qualifying electricity generators can claim under the clean electricity production credit for power sold, consumed, or stored during calendar year 2026. The notice appeared in the Federal Register on Friday, September 4, after being filed the previous day.

The factor is 2.0570. Applied to the two statutory rates, it produces a base amount of 0.6 cents per kilowatt-hour and an alternative amount of 3.1 cents per kilowatt-hour for 2026.

This is a routine annual filing that the agency describes as "required by law to be published in the Federal Register" under the statute. Its practical reach is wide. Section 45Y is technology neutral, applying to qualified facilities whose greenhouse gas emissions rate is not greater than zero, a standard that covers wind, solar, nuclear, geothermal and hydropower among others. The per-kilowatt-hour figures help determine the value of projects that will operate for decades.

Inside the Two Rate Tiers and the Gap Between Them

The credit created by section 45Y does not pay every generator the same amount. It sets a low default and a much higher alternative, and the distance between them is the policy.

The statutory base rate is 0.3 cents per kilowatt-hour. The statutory alternative rate is 1.5 cents. After the 2026 inflation adjustment and the rounding rules written into the statute, those become 0.6 cents and 3.1 cents, respectively. The alternative rate is worth roughly five times the base rate.

Put in operating terms, a facility generating 100 million kilowatt-hours in a year would be looking at about $600,000 at the base rate and about $3.1 million at the alternative rate. That difference is not a rounding question for a developer. It can determine whether a project's financial model works.

A separate provision adds a further increase for qualified facilities located in an energy community, a category that generally covers areas with a history of fossil fuel employment or closed coal infrastructure. That bonus is layered on top of whichever base applies.

The Inflation Factor Is Mechanical Rather Than Discretionary

The number itself involves no agency judgment, which is worth understanding before anyone reads intent into it.

The statute defines the inflation adjustment factor as a fraction. The numerator is the gross domestic product implicit price deflator for the preceding calendar year. The denominator is the same deflator for 1992. For this year's computation, the agency used 128.986 for 2025 and 62.707 for 1992, which divide to 2.0570.

Treasury has no latitude to raise or lower that result. The only discretion in the process concerns which revision of the Commerce Department deflator is used, and the statute settles that too by specifying the most recent revision published before March 15.

One clerical wrinkle appears in the published text. In a single line of the supplementary section, the notice states that the factor is for calendar year 2025, while the title, the summary, and the detailed computation section all consistently identify calendar year 2026. The document's own arithmetic and heading make the intended year clear, but readers comparing the notice against prior filings should be aware of the discrepancy.

Labor Standards Decide Which Rate Applies

Three separate routes qualify a facility for the higher alternative amount, and most large projects reach it through the third.

The first route is size. A facility with maximum net output below one megawatt, measured in alternating current, qualifies automatically. That covers most rooftop and small community installations.

The second is timing. Facilities whose construction began before January 29, 2023 are grandfathered in, a window tied to guidance the agencies published shortly after the Inflation Reduction Act took effect.

The third is compliance. Everything else must satisfy the prevailing wage requirements and, for construction, the apprenticeship requirements written into the statute. That is the mechanism converting a tax provision into a labor standard. A developer that does not meet those conditions is not barred from the credit, but collects roughly a fifth of what a compliant competitor collects.

Where the Credit Reaches Household Electricity Bills

This is where coverage of energy tax credits often overstates the case, so the pathway deserves to be stated plainly.

No household claims this credit. It is a production credit for generators, filed by the taxpayer that owns the qualified facility, and it does not appear on a residential return. Anyone evaluating eligibility for a specific facility should work through a qualified tax professional rather than a news summary.

The route to consumer bills is real but indirect, and it runs through procurement. Generators bidding into long-term power purchase agreements price the credit into the rate they can offer a utility. A credit worth 3.1 cents per kilowatt-hour lets a bidder quote a lower wholesale price than the same project could without it. Those contract prices flow into the fuel and purchased-power costs that utilities recover from ratepayers through state rate cases.

The effect is diffuse, lagged by years, and mixed in with fuel prices, transmission spending, storm recovery costs and load growth. It is not something a customer will identify on a monthly statement. But for readers in states with active procurement, the per-kilowatt-hour figure published this week is one input into what utilities will be paying for new generation signed this year.

Tracking the Next Filings and Guidance

The contents of this notice will be republished in the Internal Revenue Bulletin, which is the form practitioners generally cite. The agency lists Kevin I. Babitz in its chief counsel's office as the contact for questions, and the notice was signed by Christopher T. Kelley, special counsel for energy, credits and excise tax.

The full text is available as a notice of publication on the Federal Register site, with an official printed version from the Government Publishing Office and a public inspection copy posted before publication. The underlying credit sits at section 45Y of the Internal Revenue Code, added by the Inflation Reduction Act. The wage and apprenticeship guidance that started the grandfathering clock appears in an earlier Treasury notice.

A comparable computation is required next year for calendar year 2027, and it will depend on the Commerce Department deflator revision published before mid-March. Nothing in this notice changes eligibility rules, and no comment period applies, because the figures follow directly from a statutory formula.

What Readers Want to Know

What did the IRS actually publish? The agency published the inflation adjustment factor of 2.0570 and the resulting per-kilowatt-hour amounts for the section 45Y clean electricity production credit for calendar year 2026.

What are the 2026 credit amounts? The base amount is 0.6 cents per kilowatt-hour, and the alternative amount is 3.1 cents per kilowatt-hour, before any additional increase for facilities in an energy community.

Which facilities get the higher rate? Facilities with maximum net output under one megawatt, facilities whose construction began before late January 2023, and facilities meeting the prevailing wage and apprenticeship requirements.

Can homeowners claim this credit? No. It is a production credit claimed by the owner of a qualified generating facility on electricity sold, consumed or stored, not a residential credit.

Will this change my electricity bill? Not directly or immediately. The credit affects the prices generators can offer utilities under long-term contracts, which feed into purchased-power costs recovered through state rate proceedings over time.

Is there a public comment period? No. The figures follow a formula written into the statute, and the agency has no discretion to alter the result.

When is the next figure due? A comparable computation for calendar year 2027 is required, based on the gross domestic product deflator revision published before the middle of March next year.