Generator Performance - Definitions and Terms of Service

 

Generator Performance Data

Generator Output and Capabilty data is sourced from the IESO. Errors in the source data will result in inaccuracies in the real-time and summary reports. In addition, the data from some generators are not provided by the IESO. This includes generators that are not connected to the IESO controlled grid (example, if they are embedded within distribution systems) or have a rating less than 20MW.

Output Time The time of the last reported output value (Eastern Standard Time).

Output Quantity of average power in MW (or total energy in MWh) output by the generator during that last reported hour. Output readings are always positive, therefore a generator reading 0MW may in fact be a net consumer of power during that period. Similarly, a generator embedded within an industrial load that is used to displace load will only report its net output (when positive). The source data for a generator Output is also based on telemetry, which is provided in near real-time but is less accurate than revenue meter data.

Change Change in power (MW and %) from the previous hour.

Fuel Fuel which the generator uses to produce electricity.

Zone Zone where the Generator is located in Ontario. See IESO Ontario Zone Diagram

Total MWh (month) Total amount of energy produced in the current month.

Day's Range Current day's range in hourly energy produced by the generator.

Month's Range Current month's range in hourly energy produced by the generator.

Day's Capability Current day's range in capability of the generator.

Avg. Capability (month) Current month's average capability.

Total NEMSC (month) Net Energy Management Settlement Credit. Approximate revenue received by the generator for the production of electricity, in the current month to date assuming all sales were to the spot market. This revenue does not include revenue from Operating Reserve (standby reserve) or CMSC (Congestion Management Settlement Credit), which generators are paid when constrained on or off. It also does not consider any energy that was sold under contract (handled as a physical bilateral contract or privately between parties) at a fixed price to another participant or government organization (such as in the cast of historical non-utility generators). Further, NEMSC does not include any payments for energy made by the generator when in a net-withdrawal situation; where it is consuming more power than it is producing yet showing 0 MW. Since generators are settled based on 5-minute output and prices, while the source data is an hourly average, revenue may not reflect those times when a generator responded to significant changes in prices within an hour.

Avg $/MWh (month) Average revenue per MWh of energy received by the generator in the current month.

Monthly Generator Disclosure Information

This information was provided by Generator Market Participants to the IESO and published on the IESO website. Definitions below are from that site.

Maximum Continuous Rating is defined as the maximum output (MW) that a generating station is capable of producing continuously under normal conditions over a year. Under ideal conditions, the actual output could be higher than the MCR.

Planned Capability Factor is the ratio of energy that could have been delivered by a generating station with pre-approved planned unit limitations in effect, to the energy that could have been delivered if the station had operated continuously at the Maximum Continuous Rating, over the same period of time.

Total Capability Factor is the ratio of energy that could have been delivered by a generating station with pre-approved planned and forced unit limitations in effect, to the energy that could have been delivered if the station had operated continuously at the Maximum Continuous Rating, over the same period of time.

Actual Energy Production is the amount of energy a generating station produced during the month, expressed in megawatt-hours (MWh).

Actual Production Factor is the ratio of energy that was produced by a generating station, to the energy, over the same period of time, that could have been delivered if the station had operated continuously at the Maximum Continuous Rating.

Terms of Use and Liability

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SYGRATION PROVIDES THIS SERVICE "AS IS," "WITH ALL FAULTS" AND "AS AVAILABLE," AND THE ENTIRE RISK AS TO SATISFACTORY QUALITY, PERFORMANCE, ACCURACY, AND EFFORT IS WITH YOU. SYGRATION DISCLAIMS ANY AND ALL WARRANTIES, EXPRESS, STATUTORY AND IMPLIED, INCLUDING WITHOUT LIMITATION (1) WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, WORKMANLIKE EFFORT, ACCURACY, TITLE, NO ENCUMBRANCES, NO LIENS AND NON-INFRINGEMENT, (2) WARRANTIES OF ACCURACY REGARDING THE DATA, REPORTS AND INFORMATION PROVIDED WITHIN, (3) WARRANTIES ARISING THROUGH COURSE OF DEALING OR USAGE OF TRADE, AND (4) WARRANTIES THAT ACCESS TO OR USE OF THE SERVICE WILL BE UNINTERRUPTED OR ERROR-FREE. THERE ARE NO WARRANTIES THAT EXTEND BEYOND THE FACE OF THIS AGREEMENT. SYGRATION MAY CHANGE THE SERVICE OR THE FEATURES IN ANY WAY, AND AT ANY TIME AND FOR ANY REASON.

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