The headline is somewhat tongue in cheek, but the implications are
obvious. There will be times this spring (and it's already happened on
March 11) when there is so much solar power, and it's exceeding the
demand, that the effective wholesale cost is negative.
https://qz.com/953614/california-produced-so-much-power-from-solar-energy-this-spring-that-wholesale-electricity-prices-turned-negative/
Interesting factoid: "California produces half the solar power for the
entire country."
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bp
<part15sbs{at}gmail{dot}com>