The second phase of Ontario’s 50MW energy storage procurement during 2014 is now under way with the issue of a Request for Qualifications (RFQ) from prospective suppliers.
In this second phase, the Ontario Power Authority (OPA) will procure approximately 15MW of storage. This will be applied to the time-shifting of energy production and consumption, i.e. to store energy during periods of lower value to be re-injected as electricity into the system during periods of higher value.
In the first phase the Ontario Independent System Operator procured 33.5MW of storage from five suppliers, which is being applied in the provision of ancillary services. [Engerati- Ontario System Operator Procures 34MW Storage To Test In Grid Operation]
Diversity of energy storage technologies
The OPA’s intent is to procure a diversity of energy storage technology classes, encompassing a spectrum of performance characteristics.
The OPA anticipates that it will require each project to have a contract power capacity between 500kW and 2,000kW (except for projects utilizing compressed air or pumped hydro, for which the maximum capacity is anticipated to be 5,000kW). Further, the system should be able to fully charge/discharge from/to the transmission system or a distribution system within a 24-hour period delivering the contracted power capacity over a minimum of four hours.
The applicable energy storage technologies are battery (flow and solid), capacitor, compressed air, flywheel, gravitational (other than pumped hydro), ice, kinetic (other than flywheel), liquid air energy storage, power-to-gas, pumped hydro, superconducting magnetic, and thermal (other than ice).
The OPA does not anticipate permitting behind-the-meter facilities and other energy storage technologies that are not capable of re-injecting electricity directly back into the grid to participate. Such technologies are often not capable of providing the technical performance that is the equivalent of re-injected electricity (through avoided consumption) on a year-round basis or on a designated or dispatchable schedule; they do not normally have sufficient metering to clearly measure equivalent electricity re-injection; and they are inherently more in the nature of conservation and demand management technologies and thus more appropriately procured through other programs.
Storage for the long-term
The 50MW storage procurement was identified in Ontario’s Long-Term Energy Plan to assess its potential to increase the efficiency and reliability of the province’s grid. [Engerati-Energy Storage Procurements Forging Ahead in Ontario]
The qualification process will take place during the rest of the year and the OPA intends to notify the qualified applicants in January 2015.