Xcel Energy Green Button Connect My Data API

Green Button Connect My Data API based on the ESPI (Energy Services Provider Interface) standard developed by NAESB. Enables authorized third-party applications to access customer electricity and natural gas usage data from Xcel Energy smart meters. Supports RESTful access to metered resource data including usage intervals, billing data, and meter readings. Customer authorization is granted via OAuth 2.0 and follows the Green Button Connect specification used by utilities across North America.