1. Articles from Engineering News

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    1. Battery Storage is Changing the Dynamics of Renewable Revolution

      Battery Storage is Changing the Dynamics of Renewable Revolution

      Declining costs of solar power and a continued push for clean energy are driving rapid and large-scale investments in renewable energy resources. But it’s battery storage that’s quickly changing the dynamics of the renewables revolution. Many utilities see the potential that storage has to fundamentally change the way they do business. They are seeking a path forward – either to help meet customer demand with a lower carbon and emissions footprint, to satisfy rising regulatory mandates for reduced reliance on legacy power generation sources, or to contribute to reliability and resiliency efforts.

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    2. Batteries Edge Out Natural Gas Peaking Plants in Arizona RFP

      Batteries Edge Out Natural Gas Peaking Plants in Arizona RFP

      A recent announcement by electric utility Arizona Public Service could mark the tipping point in the way utilities think about building resources to meet peak demand. Historically utilities built “peakers,” usually gas turbines fueled by natural gas, to meet spikes in demand, but in recent solicitations Arizona Public Service chose battery storage projects over peakers. Late last month, APS, the largest utility in the state, said it plans to add 850 MW of energy storage by 2025, including 200 MW of stand-alone energy storage projects that competed and won against gas-fired peakers.

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    3. SEPTA’s Brake Scheme Gives Urban Transit an Energy Break

      SEPTA’s Brake Scheme Gives Urban Transit an Energy Break

      Regenerative braking is widely used in electric and hybrid cars, but its first commercial use in an urban transit system is only now being built in the Philadelphia area. Regenerative braking occurs when a vehicle, such as an electric car or train, uses its motor to stop. The motor is put into reverse and becomes a generator, pumping electricity back into the wires that delivered it. Transit agencies have been using the technology for years, flowing back power into overhead lines or the third rail, where it can be picked up and used by the next passing train.

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