Remember when everyone talked about grid parity?
The term had a mystic connotation. It implied a specific moment in time when renewables would suddenly become cheaper than coal and natural gas -- and when the cost crossover occurred, the electricity system would be transformed into a low-carbon paradise.
The term has fallen out of favor for a couple reasons.
The most obvious one: wind and solar are basically the cheapest resources around. We're already at parity in most regions. That's why America is pretty much only building wind,...
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