by Andrew Sullivan, Stikeman Elliott LLP Canadian Energy Law
Beginning November 1, 2011, many wind and solar PV generators will be required to submit real-time meteorological and output data to the IESO. The market rule amendment is part of IESO plans for renewable integration. As part of this integration, the IESO is seeking to implement centralized forecasting. Instead of providing energy forecasts, renewable facilities will be required to submit real-time, site specific data (“dynamic data”) to the IESO that will be used to produce variable generation forecasts provided by a third-party.
The requirements will apply to all wind and solar facilities connected to the IESO-controlled grid in addition to embedded non-market participants with an installed capacity over 5MW.
Starting November 1, 2011 these facilities will be required to submit both site-specific data in addition to their own forecasts. Once the IESO has implemented its central forecasting approach, renewable generators will no longer be required to submit their own forecasts. However, there is no indication from the IESO of an exact date centralized forecasting will be implemented.
Of particular note, the market rule amendment specifies reporting standards.
In addition to dynamic data, both wind and solar facilities will be required to provide information concerning the physical layout and details of the facility (“static data”) at the time of connection assessment and/or registration. A summary of these collection requirements are found below.
For wind facilities, the following static and dynamic data will be required:
|Turbine Hub location||Turbine Hub location (latitude and longitude), height, and elevation from sea level.|
|Meteorological (MET) Tower location||Physical location (latitude and longitude), height, and elevation from sea level.|
|Type of turbine||Whether the turbine is a horizontal or vertical axis type.|
|Manufacturer’s power curve||Power curve maps containing expected output for a turbine at varying wind speeds.|
|Cut in speed||The lowest wind speed (metres per second [m/s]) at which the turbine will generate power.|
|Cut out temperature||The maximum and minimum ambient temperature (in °C) at which the wind turbine will be shut down to prevent physical damage.|
|Dynamic Data||Unit of Measure||Height of Measurement||Precision (to the nearest…)|
|Wind Speed||Metres per Second (m/s)||Hub height||0.1 m/s|
|Wind Direction||Degrees from True North||Hub height||1 degree|
|Ambient Air Temperature||Degrees Celsius (°C)||Hub height or 2m||0.1 °C|
|Barometric Pressure||Hectopascals (HPa)||Hub height or 2m||60 Pa|
|Relative Humidity||Percentage (%)||Hub height or 2m||1.0%|
|MW outputs (per facility)||Megawatt (MW)||N/A||0.1 MW|
|Available Megawatts||Megawatt (MW)||N/A||0.1 MW|
Additionally, the IESO had mandated collection standards for dynamic data listed above. At minimum, each facility will be required to provide this data from nacelle mounted data collection points. Every turbine is required to be within 5km from the nearest data collection point. Furthermore, each facility over 10MW will be required to provide data from at least one standalone meteorological tower. The number of towers required will correspond to the facility size (MW). Towers will be required located on the prevailing upstream side of the wind facility in areas that have representative microclimates and winds at hub height. Data is to be reported to the IESO in real-time every 30 seconds.