General Electric (GE) and Southern California Edison (SCE) have launched the world’s first battery-gas turbine hybrid system in Norwalk, California.
Known as LM6000 Hybrid Electric Gas Turbine (Hybrid EGT), the battery-gas turbine hybrid system is the first of two units to be delivered by GE to SCE.
The unit features a 10MW/4.3MWh battery energy storage system that is capable of immediately supplying power with GE’s 50MW LM6000 aeroderivative gas turbine. The system helps support SCE’s growing renewable energy capacity by offering quick-start ramping capabilities when they are needed.
SCE's president Ron Nichols said: “The new system will help SCE better utilise the resources on the grid, provide enhanced reliability, reduce environmental impact, and reduce cost for our operations and for our customers.
“This technology also allows us to continue to expand our use of solar, wind, and other renewable resources.”
Developed to address the changing energy requirements in California, the new Hybrid EGT system balances variable energy supply and demand, even during evening hours when the sun sets and solarpower generation reduces while the electricity usage at households increase.
The Hybrid EGT is equipped with a control system that seamlessly combines output between the battery and the gas turbine.
The energy storage capacity of the battery has been designed to provide enough time coverage, enabling the gas turbine to start and reach its designated electricity output, thereby supplying power immediately when demand increases.
GE Energy's connections grid solutions president and chief executive officer (CEO) Reinaldo Garcia said: “As the electrical grid network continues to evolve, with more intermittent renewables being added every day, products like the Hybrid EGT can help smooth out the delivery of electricity.
“Storage and the ability to quickly push power to the grid also play a key role in emergency situations, dispatching energy immediately to the grid ensuring that we are able help keep the lights on for everyone.”
The hybrid system also helps reduce greenhouse gas emissions and air pollution by 60%, while demineralised water consumption will be reduced by nearly 45%, saving two million gallons of water per year and enhancing the life of the equipment.
Image: GE and SCE unveil world's first hybrid battery storage and gas turbine system. Photo: courtesy of Business Wire.