Common use of Units and Accuracy Clause in Contracts

Units and Accuracy. A. Units and accuracy of measured parameters to be provided to Company in real time shall be as shown in the Table below. These represent the minimum required accuracies. Table of Units and Accuracy of Meteorological and Production Data (Wind) Parameter Data Source Unit Range Accuracy Wind speed at nacelle of each WTG Cup or sonic anemometer mph 0 to 134 mph +/-1 mph Wind direction at nacelle of each WTG Vane, sonic device or equivalent Degrees (from True North) 360º +/-5º Wind speed at MMT Cup or sonic anemometer mph 0 to 134 mph +/-1 mph Wind direction at MMT Vane, sonic device or equivalent Degrees (from True North) 360° +/-5° Ambient air temperature at MMT (hub height) Temperature probe ºC -20 to +50 ºC +/-1 ºC Ambient air pressure at MMT (hub height) Piezoresistive transducer, barometer or equivalent mbar 150 to 1150 mbar +/-60 mbar (0 to +50ºC) Power production for each WTG Measured at WTG MW Up to WTGS name plate +/-0.1 MW Set point for each WTG Reported by Seller MW 0 to WTGS name plate Not applicable Power production of Facility Measured at Facility's analog transducer on Seller's side of POI MW Up to Allowed Capacity The lesser of the tolerances of the telemetry equipment or 2% of measurement Facility power production ratio Ratio of Facility's power production (MW)/Allowed Capacity (MW) % 0 to 100% +/-0.1% Power Possible Seller’s Model MW 0 to Allowed Capacity +/-4%

Units and Accuracy. A. Units and accuracy of measured parameters to be provided to Company in real time shall be as shown in the Table table below. These represent the minimum required accuracies. Table of Units and Accuracy of Meteorological and Production Data (Wind) Parameter Data Source Unit Range Accuracy Wind speed at nacelle of each WTG WTGS Cup or sonic anemometer mph Mph 0 to 134 mph +/-1 mph Wind direction at nacelle of each WTG WTGS Vane, sonic device or equivalent Degrees (from True North) 360º +/-5º Wind speed at MMT Cup or sonic anemometer mph Mph 0 to 134 mph +/-1 mph Wind direction at MMT Vane, sonic device or equivalent Degrees (from True North) 360° +/-5° Ambient air temperature at MMT (hub height) Temperature probe ºC -20 to +50 ºC +/-1 ºC Ambient air pressure at MMT (hub height) Piezoresistive transducer, barometer or equivalent mbar Mbar 150 to 1150 mbar +/-60 mbar (0 to +50ºC) Power production for each WTG WTGS Measured at WTG WTGS MW Up -20% to 120% of WTGS name plate +/-0.1 MW Set point for each WTG WTGS Reported by Seller MW 0 to 120% WTGS name plate Not applicable Power production of Facility Measured at Facility's analog transducer transducers on Seller's side of POI MW Up -20% to 120% of Allowed Capacity The lesser of the tolerances of the communication/ telemetry equipment or 2% of measurement Facility power production ratio Ratio of Facility's power production (MW)/Allowed Capacity (MW) % 0 to 100% +/-0.1% Power Possible Seller’s Model MW 0 to 120% of Allowed Capacity +/-4%/0.1 MW

Units and Accuracy. A. Units and accuracy of measured parameters to be provided to Company in real time shall be as shown in the Table below. These represent the minimum required accuracies. Table of Units and Accuracy of Meteorological and Production Data (Wind) Parameter Data Source Unit Range Accuracy Wind speed at nacelle of each WTG WTGS Cup or sonic anemometer mph 0 to 134 mph +/-1 mph Wind direction at nacelle of each WTG WTGS Vane, sonic device or equivalent Degrees (from True North) 360º +/-5º Wind speed at MMT Cup or sonic anemometer mph 0 to 134 mph +/-1 mph Wind direction at MMT Vane, sonic device or equivalent Degrees (from True North) 360° +/-5° Ambient air temperature at MMT (hub height) Temperature probe ºC -20 to +50 ºC +/-1 ºC Ambient air pressure at MMT (hub height) Piezoresistive transducer, barometer or equivalent mbar 150 to 1150 mbar +/-60 mbar (0 to +50ºC) Power production for each WTG WTGS Measured at WTG WTGS MW Up to WTGS name plate +/-0.1 MW Set point for each WTG WTGS Reported by Seller MW 0 to WTGS name plate Not applicable Power production of Facility Measured at Facility's analog transducer equipment on Seller's side of POI MW Up to Allowed Capacity The lesser of the tolerances of the communication/ telemetry equipment or 2% of measurement Facility power production ratio Ratio of Facility's power production (MW)/Allowed Capacity (MW) % 0 to 100% +/-0.1% Power Possible Seller’s Model MW 0 to Allowed Capacity +/-4%/-0.1 MW