Green Button (CMD / DMD / ESPI / CDS)
Green Button is the consumer energy data standard for utilities and third-party solution providers. Connect My Data (CMD) is the machine-to-machine sharing flow. Download My Data (DMD) is the user-initiated export flow. The Energy Services Provider Interface (ESPI) defines the underlying REST and Atom payloads (UsagePoint, MeterReading, IntervalBlock, ReadingType). The Consumer Data Specification (CDS) is the working group's next-generation profile.