Solar Arrays are Great, But Big Batteries are Better

Last spring California quietly achieved a milestone that, despite its ramifications for homeowners, businesses, and the planet itself, generated few if any headlines: the use of battery-stored energy surpassed that of natural gas.

In other words, California homes and businesses are now pulling more energy from battery storage systems than from natural gas solutions. And with the cost of batteries plummeting by as much as 80-90 percent, there is little reason to think other sun-drenched states won’t soon be following suit.

The numbers in California are startling. Just five years ago California had 770MW of battery storage. Today that figure is nearly 10.4GW and by year’s end may top 14GW. Since 2020, California has installed more batteries than any other part of the world except for China.

CA Battery Storage

Historically, California has depended on natural gas, nuclear power, hydroelectric services to feed its massive appetite for energy. Batteries – and the green energy solutions that keep them fed – are eating into the market share of those solutions. And bringing cleaner air with them.

“As we’re building more solar and batteries and other renewables on the grid, we’re seeing more and more reductions of gas, and eventually the gas will be eliminated,” said Mark Jacobson, a professor of civil and environmental engineering at Stanford University. “There was an eclipse on April 8, when solar supply went down precipitously for a couple of hours and immediately the batteries kicked in and replaced the solar.”

U.S. battery storage

A snapshot of U.S. battery storage system plants. Source: U.S. Energy Information Administration

There’s an old saying that ‘where California goes, America follows.’ That may prove particularly true when it comes to battery storage systems. As the nation’s most populous state races toward a net-zero future, other states are paying attention.

And it’s not as if battery storage systems are an option. With the nation’s aggressive push toward renewable energy solutions, batteries necessarily come with that move. “If you want more renewables on the grid, you need more batteries. It’s not going to work otherwise,” said Andrés Gluski, chief executive of AES Corporation.

As for California, the state is keeping the proverbial pedal to the metal. Huge new investments are being made in solar and battery production to ensure the state reaches its 2045 net-zero goal.

And it should be noted that the Golden State isn’t alone. Texas recently passed California as the nation’s leading generator of solar power.

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