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Metering and telemetry ensure operational accuracy

Accurate metering of electricity generated or consumed provides key data inputs for accurate settlement calculations. Direct measurement of a generator or load participant through telemetry allows the ISO to manage and monitor power generation in real-time.

Metering process and requirements

Meter data represents the energy generated or consumed during a settlement interval. The ISO, ISO metered entities, and scheduling coordinator metered entities follow prescribed processes and procedures to ensure the data is settlement quality.

Metering procedures

These procedures complement, but do not replace, section 10 of the ISO Tariff and Business Practice Manual for Metering.

Operating procedures

Meter installation, inspection and certification

Additional information, required forms and lists for metered entities

Meter data submission and reporting

Specifications for submitting and retrieving meter data and instructions using the Operational Meter Analysis and Reporting (OMAR) system.

  • Operational Meter Analysis and Reporting (OMAR)
  • Scheduling coordinator self audit of settlement quality meter data
    Scheduling coordinators must annually complete a self-audit of settlement quality meter data processes. This requires examining meter data processes to demonstrate appropriate controls for accurate reporting.
  • Qualified reporting entity
    The role of the Qualified Reporting Entity (QRE) is to submit meter data associated with renewable energy on behalf of ISO Metered Entities (ISO Polled) using the WREGIS application.
  • Station power program
    Station power — the energy used to operate auxiliary equipment and other load that is directly related to the production of energy — can be converted from retail service to wholesale service.

Direct telemetry process and requirements

The ISO requires direct telemetry of participating generators and load by installing a remote intelligent gateway (RIG) for generating units providing regulation energy or a data processing gateway (DPG) or other ISO-approved technology for resources providing non-regulation ancillary services or supplemental energy.