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IESO issues RFP for up to 35MW of energy storage

March 12, 2014 | By Anthony Capkun

March 12, 2014 – Ontario’s Independent Electricity System Operator (IESO) has launched a competitive request for proposals process to procure up to 35MW of energy storage.

“These procurements are structured to maximize learning about energy storage services and how they can best serve Ontario’s needs,” said Bruce Campbell, IESO president and CEO.

This RFP is designed to select and test a diverse portfolio of storage technologies, explains IESO, allowing the organization to learn more about integrating new technologies into grid and market operations.

While it is anticipated that additional services can be provided, selected respondents must be able to provide regulation service, or reactive support and voltage control (RSVC) service as a mandatory requirement. Respondents must be located in Ontario and directly connected to the transmission or distribution system.


IESO’s storage procurement process supports the Ontario government’s LTEP (Long-Term Energy Plan), which calls for 50MW of energy storage. Subsequent to the IESO’s procurement, Ontario Power Authority (OPA) will issue a request for proposals for the remaining megawatts.

It is expected that contracts will be executed by the end of June 2014. The RFP is available through MERX e-tendering website. See the backgrounder (below) for more information.

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