10 C.F.R. § 451.7 Metering requirements.
Title 10 - Energy
The net electric energy generated and sold (kilowatt-hours) by the owner or operator of a qualified renewable energy facility must be measured by a standard metering device that— (a) Meets generally accepted industry standards; (b) Is maintained in proper working order according to the instructions of its manufacturer; and (c) Is calibrated according to generally accepted industry standards.
Title 10: Energy
PART 451—RENEWABLE ENERGY PRODUCTION INCENTIVES
§ 451.7 Metering requirements.