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US utility San Diego Gas & Electric (SDG&E) signed six energy storage and demand response (DR) contracts under efforts to sustain the reliability of its grid network.In a press statement, SDG&E said the six battery energy storage and DR contracts will help in improving its renewable energy portfolio as well as in stabilising its grid network during peak periods.

Battery energy storage development

The energy provider signed five contracts for the development of battery energy storage systems with a total energy storage capacity of 83.5MW.

With AES Energy Storage, SDG&E partnered to construct a 40MW storage plant whilst a 30MW battery storage system will be developed in partnership with Renewable Energy Systems in Miramar.

Three battery energy storage plants will be built and owned by Powin Energy, Enel and Advanced Microgrid Solutions to help SDG&E improve its energy mix in Escondido, Poway and San Juan Capistrano.

The battery storage systems will save energy generated from wind, solar and traditional energy sources during off-peak demand periods and provide into the grid during periods when demand is high.

The five battery energy storage systems are expected to be operational between December 2019 and late 2021. The five battery energy storage contracts fall under efforts by SDG&E to meet a target set by the California Public Utilities Commission for the utility to acquire 165MW of energy storage capacity by 2020.

Demand response and peak demand periods

SDG&E’s 4.5MW demand response contract with energy management firm OhmConnect is expected to be implemented as from early 2018 to help industrial and commercial consumers reduce their energy usage and costs.

Under the demand response programme, participating consumers will be requested to reduce their energy consumption for 20 minutes during peak days and hours.

Commenting on the signing of the six contracts, Emily Shults, SDG&E’s vice president of energy procurement, said: “By building these projects, SDG&E will remain at the forefront of helping the state achieve its bold clean-energy and carbon-emission targets.”

Meanwhile, Entergy Arkansas extended its demand response contract with an energy conservation solutions firm to ensure grid reliability as well as reduce energy consumption and costs.

Under the extended contract, Entergy Arkansas will continue to use the company's technology and services in its programme, Summer Advantage, throughout 2017. Read more...

 

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