I'm still waiting for a payback of much less than 25 years including incentives. With the western Washington insolation rate we have to significantly upsize our array compared to much of the country, also we still pay about .09.
Not long ago, with the incentives in California it moved the pay back to 5 years or less. I think they are still in effect. That's a no-brainer to me, seems like they should've been sprouting up everywhere.
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