Story perspectives
New U.S. Rules Restrict Foreign Materials in Clean Energy
2/13/2026
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Story summary
- The U.S. Treasury Department released interim rules on February 12, 2026, restricting foreign materials in clean energy projects under the One Big Beautiful Bill Act.
- The rules bar components from China and other adversaries, affecting tax credits for solar and wind projects.
- The guidance explains how to calculate “material assistance” from prohibited entities by using assigned cost percentages for compliance.
- Ambiguities around what qualifies as “foreign influenced” entities may complicate project financing.
- The Internal Revenue Service will audit compliance for up to six years, increasing stakes for developers.
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