SunEdison Signs Large-Scale Energy Storage Contract with Ontario ISO

SunEdison said on Dec. 10 that it has signed a 10-year agreement with Ontario's Independent Electricity System Operator (IESO) to supply 5 MW/20 MWh of energy storage to the province.

"By integrating energy storage into their grid, the Ontario IESO gains access to a powerful new tool that has the potential to transform how it operates the power system," Tim Derrick, SunEdison general manager of Advanced Solutions, said in a statement. "Batteries … may help the IESO defer or avoid expensive upgrades to the grid."

SunEdison said that the IESO intends to use data from the 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.

The project, which will use Imergy’s vanadium redox flow battery technology, 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's energy storage project is one of several projects that will support reliability in Ontario by providing much needed quick response capacity and operational flexibility," Bruce Campbell, Ontario IESO's president and CEO, said. "We congratulate SunEdison on the success of their proposal and look forward to working with them to implement this project."

SunEdison plans to start construction of the project during the first half of 2017, with completion targeted for later that year.

Lead image: Contract. Credit: Shutterstock.

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