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Climate change

GE hopes giant grid batteries can save the planet (and its fortunes)

The engineering firm hopes a storage system can smooth electricity supply on a grid powered by renewables—and let it capitalize on a fast-growing market.

The news: GE announced a new system called Reservoir—a large battery attached to the grid to store spare electricity from renewables. When the sun doesn’t shine and wind doesn’t blow, it dumps electrons into the grid to meet demand. It uses discharging smarts to extend its working life, and it’s modular, so it can be adapted to fit small or large gigs.

Electric potential: Grid storage is growing—fast. The Energy Storage Association predicts that US storage in use will double over 2018. The Wall Street Journal notes that the market is predicted to be worth tens of billions of dollars in the next 10 years. GE, which is struggling financially, will hope Reservoir grabs it a slice of the pie.

But: There’s competition. Tesla has its own grid batteries that are deployed in South Australia as part of a huge 129-megawatt system. A Siemens venture called Fluence is building a system in California that will be three times as big. GE, meanwhile, has just a 20-megawatt commitment for Reservoir so far.

Deep Dive

Climate change

A firefighter cries near a wildfire in the Losacio area in north western Spain
A firefighter cries near a wildfire in the Losacio area in north western Spain

Do these heat waves mean climate change is happening faster than expected?

General warming predictions are still on track, but recent heat waves are a stress test for the modeling of extreme events.

The future of urban housing is energy-efficient refrigerators

Adapting old, energy-inefficient buildings is less sexy but far greener than many high-tech solutions.

illustarted map of US charging stations
illustarted map of US charging stations

The U.S. only has 6,000 fast charging stations for EVs. Here’s where they all are.

Electric vehicles appear poised to drive into the mainstream—but where will they plug in?

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Illustration by Rose WongIllustration by Rose Wong

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