How Do We Get to 100% Renewable Energy? Could be Storage, Storage, Storage

"2. Storage is becoming part of the power plant

New energy storage deployments demonstrate just how quickly we can overcome the limit that the sunset creates for solar. The trajectory of energy storage substituting for conventional generation can be traced from actual practices. Beyond the early or largest examples of non-battery energy storage recently illustrated in the New York Times, going forward, there is widespread and dramatic potential for the use of battery storage by businesses and hybrid power plants.

Battery storage added at a power plant, both conventional and renewables, can take on duties that were met by old generators. First seen in remote locations, battery storage paired with generation began in isolated grids in places like Hawaii and Chile where ancillary services from very small generator fleets were unavailable or constraining the grid operations. This helped establish the technical and commercial foundation for expansion to larger grids in the United States.

Recent energy storage deployments now demonstrate a turning point. Present state-of-the-art technology adoption includes manufacturer General Electric (GE) adding energy storage to improve the performance of its line of peaking plants.

With short duration storage now understood as providing ancillary and essential services, GE is delivering hybrid plants with storage and a gas turbine integrated in a system with a single set of controls. The GE hybrid system uses the storage to provide the reliability capabilities of the gas generator with instantaneous response, regardless of whether the unit is started and burning fuel when response is needed."

Read more: Union of Concerned Scientists | June 15, 2017

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