Access Smart Meter Texas interval data

Verified steps

1. Register as a third-party company with Smart Meter Texas (SMT) at smartmetertexas.com; SMT requires a formal registration process and agreement before API credentials are issued — there is no public self-service API key.
2. Review the Smart Meter Texas Interface Guide (available after registration at smartmetertexas.com) which documents the REST and SOAP API endpoints, authentication method, and request/response schemas; all API services use the POST method with the full payload in the request body.
3. Obtain customer consent: before retrieving a customer's interval data, the customer must authorize your third-party access through the SMT portal or via the SMT API's consent flow — proceed only after receiving a confirmed authorization token or confirmation of customer registration.
4. Request 15-minute interval data for a meter using the SMT API's interval data request endpoint, specifying the ESI ID (Electric Service Identifier, the Texas meter identifier), the requested date range, and your credentials in the POST body.
5. Handle the asynchronous response pattern: SMT interval data requests are queued and results are typically available within 24–48 hours; poll the status endpoint with the returned request ID until the status is complete, then retrieve the data.
6. Parse the returned 15-minute reads (96 intervals per day) and convert to UTC; SMT timestamps are in Central Prevailing Time — apply DST-aware conversion for analysis outside Texas-local time context.