Green Button Alliance — independent third-party profile of a public API surface, by API Evangelist. The Green Button Alliance (GBA) is the non-profit that stewards, tests and certifies the Green Button standard — the NAESB REQ.21 Energy Services Provider Interface (ESPI) profile for utility customer electricity, natural gas and water usage data, in
energy utilities united-states gas electricity certification water espi smart-metering green-button apis-json standards-body consumer-energy-data
-
Updated
Sep 16, 2026