Under Sections 45, 45Y, 48, and 48E, a project located in an "energy community" qualifies for a bonus on top of the base credit. For the production tax credit, that's an extra 10 percentage points. For the investment tax credit, it's up to 10 additional percentage points, so long as prevailing wage and apprenticeship requirements are met. On a large project, that adder alone can be worth millions of dollars, and it costs nothing to claim beyond confirming the site qualifies.
Three ways in
The IRS recognizes three separate paths to energy community status, and a project only needs to clear one of them.
The first is the Brownfield Category. This covers real property where redevelopment is complicated by the presence, or potential presence, of a hazardous substance or contaminant, following the definition set out in CERCLA. The IRS built in a safe harbor here: if a site was already assessed as a brownfield through a federal, state, territory, or tribal program, or has completed a Phase II environmental site assessment, it qualifies without further argument.
The second is the Statistical Area Category. This applies to metropolitan and non-metropolitan statistical areas that meet a fossil fuel employment threshold — 0.17% or more direct employment tied to coal, oil, or gas extraction, processing, transport, or storage — and also carry an unemployment rate at or above the national average for the prior year. Because unemployment rates move every year, this list is refreshed annually, and a location that qualifies today isn't guaranteed to qualify next year.
The third is the Coal Closure Category, covering census tracts where a coal mine closed after 1999, a coal-fired generating unit retired after 2009, or the tract directly adjoins one that did. The IRS updates this list too, most recently through Notice 2026-39, which added newly identified tracts using Mine Safety and Health Administration and Energy Information Administration data through May 2026.
Why timing matters more for PTC projects than ITC projects
For the investment tax credit, energy community status is generally locked in on the placed-in-service date. Once you clear that bar, you're done — there's no requirement that the area keep its status through the recapture period.
Production tax credit projects work differently. Because the credit is claimed annually over a 10-year period, the default rule tests energy community status every single year. A project in a Statistical Area that qualifies in year one because of a bad local unemployment rate could lose that status in year three if the local economy improves. That's a real problem for tax equity investors trying to size an investment around a bonus that might not hold up.
The fix is the beginning-of-construction safe harbor. If a project determines its energy community status as of the date construction begins, that status holds for the entire credit period — 10 years for the PTC, or through the placed-in-service date for the ITC — regardless of what happens to local unemployment data afterward. This safe harbor is only available to projects that began construction after January 1, 2023, which makes documenting the beginning-of-construction date one of the more consequential decisions a sponsor makes. The mechanics of what actually counts as "beginning construction" tightened considerably under Treasury's 2026 guidance tied to the July 4, 2026 construction deadline, and the same documentation discipline applies here.
How sponsors are using this at the site selection stage
Because the bonus is worth real money and doesn't depend on any technology choice, developers with flexibility on where to build are increasingly running the Statistical Area and Coal Closure maps before they run a wind resource study. A project sited a few miles differently can be the difference between a 30% and a 40% investment tax credit. For projects already committed to a site, the more useful exercise is confirming which category applies and locking in the determination at the earliest defensible date, since the Statistical Area list changes annually and the Brownfield category depends on documentation that's easier to gather before groundbreaking than after.
Buyers evaluating a credit with an energy community adder attached should expect diligence to focus on exactly this: which category is being claimed, what safe harbor supports it, and whether the underlying maps and unemployment data were current as of the relevant date. For a full-scope framework on how these bonus categories interact with the broader Section 48E credit, see our complete guide to the Section 48E Clean Electricity Investment Credit.