Battery Energy Storage System (BESS)

  • Each BESS will be sized up to 5 megawatts/20 megawatt hours in capacity and duration.
  • Each BESS will occupy approximately 0.28 acres of land, including all required setbacks and spacing. Visual screening (trees and shrubs) will be used to prevent any visual impacts the BESS will have.
  • BESS will be located at existing solar array sites and independently connected to the Ontario electricity grid.
  • The BESS will charge at night when electricity demand is low, and discharge during the day when demand is high. BESS components include containerized units housing all necessary batteries, inverters, fire suppression and extinguishment, and HVAC systems.

IESO E-LT 1 RFP Timeline

  • IESO announced draft Request for Proposals for the Procurement of Expedited Long-term Electricity Reliability Services (E-LT 1 RFP) on August 25, 2022 and the final version was released on December 6th, 2022.
  • As per the IESO procurement, all qualified projects must be submitted by February 16th, 2023 to qualify for the expedited process.