Renewable Energy, Solar

VIDEO: Ontario ISO contracts for flow battery energy storage with SunEdison

Renewable energy development company SunEdison signed a 10-year agreement with Ontario’s Independent Electricity System Operator to supply 5 MW (20 MWh) of battery energy storage to the province.

The Ontario IESO works at the heart of Ontario’s power system, and is responsible for making sure everyone in the province gets the electricity they need, when they need it.

In addition to leveraging the battery’s energy storage capability, the IESO intends to use data from this energy storage project to analyze how storage can be used to smooth the power flow from wind and solar, defer expensive system upgrades, and ultimately shape the future of its grid.

This project is SunEdison’s first commercial large scale grid-connected energy storage project, and is one of the first commercial applications of flow batteries in Canada.

SunEdison is working with flow battery technology leader Imergy to deliver the project. Imergy’s vanadium redox flow battery technology provides a cost effective and durable way to store energy for hours at a time.

SunEdison plans to start construction of the project during the first half of 2017, with completion targeted for later that year. Operation and maintenance of the battery systems will be performed by SunEdison Services, which provides global asset management, monitoring and reporting services.