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U.S. Code of Federal Regulations
Regulations most recently checked for updates: Aug 27, 2025
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Title 10
Chapter II
Part 500 - PART 500—DEFINITIONS
§ 500.1 - Purpose and scope.
§ 500.2 - General definitions.
§ 500.3 - Electric regions—electric region groupings for reliability measurements under the Powerplant and Industrial Fuel Use Act of 1978.
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