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The article says:

"Closer to home, Los Angeles’ utility commission recently approved a new solar plant that will deliver 300 megawatts of energy at 3.962¢/kWh (by comparison, electric power from natural gas usually costs about 8¢/kWh in the US). Importantly, that price tag includes energy storage as well, meaning the plant will be able to deliver energy to LA residents day and night."

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An LA Times article [1] on the solar power plant suggests it can supply 6-7% of LA's annual electricity needs and deliver upto 4 hours of power each night.

I don't read that as 100% of LA's night time power requirements each night for 4 hours though; rather, that it can continue supplying at a steady rate 4 hours after Sun down. It's not nearly a replacement for base load power.

[1] https://www.latimes.com/environment/story/2019-09-10/ladwp-v...

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