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Metering FAQ

  1. With whom should metering installations used for settlement purposes be registered?
  2. What are the registration requirements for a Metering Service Provider (MSP)?
  3. Who owns metering data?
  4. Who is responsible for the cost of installing and maintaining the metering installation?
  5. What measures have been taken to ensure consistency and standards in meter requirements at the wholesale and retail levels?
  6. Is there a catalogue of the manufacturers and meters accepted by the IESO?
  7. Is there a list of registered Metering Service Providers available?
  8. If a physical facility has multiple meters, can it have multiple delivery points associated with it?
  9. If the facility has internal sub-metering which shows hourly profiles and can be totalized for overall consumption, is this adequate for metering purposes or back-up metering purposes?
  10. Are potential participants in the Wholesale Energy Market required to have a Metering Service Provider register their metering installation with the IESO or can this be done by the local utility?
  11. How does a third party access metering data and what authority is required?
  12. What time will meter data typically be available for a trade date?
  13. Will MV-Web accept requests from market participants to download meter data that is not of 5 min intervals (eg, 15 min or hourly?)
  14. Can there be more than one version of the Totalization Table in effect during the same – ie, can it change during the day or are the changes always made effective at the end of the day?
  15. How long will all the versions of the interval meter data be kept available for market participants to download?
  16. What is the format and content of the request (input) and response (output) file for metering data?
  17. Will the IESO's meter data validation include checking the main meter data reading against the alternate meter data reading (where available) and reporting on any discrepancies? If so, will market participants have access to the discrepancy report?
  18. Will meter data aggregated to the Delivery Points (point of transaction with the IESO) be available (ie, independent of settlement statements) for market participants to download, and if so, how?
  19. Will market participants be able to view and download any versions of their interval meter data?
  20. How can the MSP get a copy of the Metering Installation Registration Tool (MIRT)?
  21. Where do I get more information?

 

  1. With whom should metering installations used for settlement purposes be registered?

    Metering installations used for settlement in the IESO-administered markets must be registered with the IESO. Details regarding the process of registering a metering installation can be found in parts 3.2, 3.3, 3.4, 3.5, 3.7 and 3.8 of Market Manual 3: Metering.

  2. What are the registration requirements for a Metering Service Provider (MSP)?

    The Market Rules require that the registration and maintenance of the metering installations used in the IESO-administered markets be handled by IESO-registered Metering Service Providers. To apply for registration, applicants must follow part 3.1 of the Market Manual 3: Metering, Metering Service Provider Registration, Revocation and De-registration and complete the MSP Application Form and the Transitional Metering Service Provider Agreement.

  3. Who owns metering data?

    Metering data is always owned by the Metered Market Participant assigned to the relevant meter.

  4. Who is responsible for the cost of installing and maintaining the metering installation?

    The Metered Market Participant is responsible for the cost of installing and maintaining the metering installation. However, the Metered Market Participant must contract the services of a Metering Service Provider to perform these tasks.

  5. What measures have been taken to ensure consistency and standards in meter requirements at the wholesale and retail levels?

    Retail Metering standards lie within the jurisdiction of the OEB. When the Market Rules were developed by the Ontario Market Design Committee (MDC), wholesale and retail metering teams held joint sessions to ensure the two sets of metering standards were as consistent as possible.

    Wholesale Metering Standards enable prospective wholesale market participants to assess the equipment and design requirements of joining the wholesale energy market and determining whether upgrades of existing installations are required.

  6. Is there a catalogue of the manufacturers and meters accepted by the IESO?

    The Conforming Meter List maintained by the IESO provides a catalogue of the manufacturers and meters accepted by the IESO.

  7. Is there a list of registered Metering Service Providers available?

    A list of registered Metering Service Providers that have satisfied the requirements specified in the Market Rules and the MSP Registration procedure is available on the IESO website. The IESO will also publish and maintain a list of MSPs whose registration has been revoked.

  8. If a physical facility has multiple meters, can it have multiple delivery points associated with it?

    Delivery Points for settlement in the Wholesale Energy Market are assigned on a Metered Market Participant (account) basis. Thus, multiple Delivery Points may be created for the same physical facility. In addition, separate Delivery Points are created for Transmission Customers (Network and Connection, respectively).

  9. If the facility has internal sub-metering which shows hourly profiles and can be totalized for overall consumption, is this adequate for metering purposes or back-up metering purposes?

    All new wholesale meters must be on the list of conforming meters. For meters that were in service at time of market open, please call the IESO.

  10. Are potential participants in the Wholesale Energy Market required to have a Metering Service Provider register their metering installation with the IESO or can this be done by the local utility?

    The Metered Market Participant contracts the services of a IESO-registered  Metering Service Provider which will undertake the registration of the metering installation(s) and totalization table required for settlement at the relevant Delivery Point. The registration of a metering installation with the IESO can be undertaken by the local utility provided this organization is duly registered as a Metering Service Provider.

  11. How does a third party access metering data and what authority is required?

    An authorized agent can be associated to the meter point/delivery point by the market participant designated as the Metered Market Participant, provided the agent has also been registered as a market participant. The association of an authorized agent to a specific Delivery Point is accomplished via MV-WEB. Once associated with a certain Delivery Point, the authorized agent can access metering data associated with that Delivery Point at all levels (Delivery Point, summary map and/or physical meter data).

  12. What time will meter data typically be available for a trade date?

    The collection of metering data for a specific trade date begins at the end of the trading day (at midnight) and is expected to conclude by 6:00 am. The automatic validation and estimation processes begins once the collection of metering data has been completed. The manual editing of metering data may also be be undertaken once the collection of metering data has been completed.

  13. Will MV-Web accept requests from market participants to download meter data that is not of 5 min intervals (eg, 15 min or hourly?)

    Metering data will be available to participants at the same interval at which it is metered. A Delivery Point or summary map reading representing a totalization of the contributing meters that are of different interval measurements (15-minute and 5-minute) will be displayed at the smallest interval of the contributing meters. Thus, if the smallest interval of any one of the contributing meters is 5-minutes, the metering data will be presented at 5-minute intervals. Conversely, if all contributing meters are 15-minute meters, the metering data will be presented at 15-minute intervals. Note that MV-Web does not provide hourly readings.

  14. Can there be more than one version of the Totalization Table in effect during the same – ie, can it change during the day or are the changes always made effective at the end of the day?

    A totalization table is in effect for a complete trade day for both the energy market and for transmission tariffs. A totalization table that is re-submitted for an existing Delivery Point is considered to be a new totalization table replacing the existing one. When a new totalization table is submitted for an existing Delivery Point, the new table takes effect at midnight, ie, at the same time the old one ends.

  15. How long will all the versions of the interval meter data be kept available for market participants to download?

    Metering data will be available for up to 13 months after a trade date.

  16. What is the format and content of the request (input) and response (output) file for metering data?

    The request (input) file is an ASCII file containing general information (password, report type and request reference number) as well as specific information (ID of the queried system: Meter Point, Delivery Point, summary map).

    The response (output) file is generated, upon the viewer's option, in either ASCII or EDI-867 format, while metering data is displayed for various channels in kWh, kVAh, I2h or V2h.

    The format of the EDI-867 response file is available on the Technical Interfaces page - under Revenue Metering - Report Templates & Samples - "Meter Reading Data - download"

  17. Will the IESO's meter data validation include checking the main meter data reading against the alternate meter data reading (where available) and reporting on any discrepancies? If so, will market participants have access to the discrepancy report?

    Yes, the Validating, Estimating, and Editing (VEE) process does include comparing metering data collected from the main and the alternate meter. When the difference exceeds the predefined limits, the MSP will be informed by means of a trouble call.

  18. Will meter data aggregated to the Delivery Points (point of transaction with the IESO) be available (ie, independent of settlement statements) for market participants to download, and if so, how?

    Meter data available from the Revenue Metering System can be requested on a daily basis by the authorized participants at the Delivery Point, summary map and/or Meter Point (physical meter) level. Meter data requests may be made via MV-WEB or FTP.

  19. Will market participants be able to view and download any versions of their interval meter data?

    A market participant authorized or associated with a Delivery Point may view all versions of the metering data. The version number is incremented whenever the metering data is modified due to estimation or editing.

    Metering data requested through the submission of a request file will be supplied in the version specified in the request file. The options regarding the version of metering data selected for display are as follows: Current, Current Validated, Version #, First and Use Date. An additional option enables metering data to be displayed with or without losses.

  20. How can the MSP get a copy of the Metering Installation Registration Tool (MIRT)?

    Information on how to access MIRT is provided to all registered Metering Service Providers on request.

  21. Where do I get more information?

    For more information, contact the IESO at:

    Tel: 905-403-6900
    Toll Free: 1-888-448-7777
    Fax: 905-403-6921
    E-mail: helpcentre@ieso.ca

 
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