CMS Energy · Rate Limits
Cms Energy Rate Limits
Rate limits for CMS Energy customer-data sharing follow the NAESB ESPI / Green Button Connect conventions: data-custodian polling once per billing-period or once per day for interval data, with reauthorization required when consents expire. Specific numeric ceilings are not publicly documented.
2 Limits
Throttle: 429
ElectricEnergyGreen ButtonUtilityRate Limiting
Limits
Green Button Connect polling third-party-application
see NAESB ESPI / Green Button Connect implementation
Typical Green Button Connect implementations expect third parties to poll once per day per authorized customer. CMS-specific ceiling is not publicly documented.
Partner-contract defined account
see partner agreement
Limits are negotiated as part of each partner integration agreement.
Policies
NAESB ESPI compliance
Green Button Connect access follows the NAESB ESPI specification. Third parties authenticate via OAuth 2.0 and refresh tokens as required by ESPI.
Backoff strategy
On 429 responses, honor any Retry-After header and back off with jitter before retrying.
Bilateral contract
Specific limits, retry policy, and SLAs for non-Green-Button integrations are governed by the partner integration contract.