What would be an improvement would be a PV unit capable of running an electric hot water heater. It would avoid running pipes to the roof for conventional solar hot water. My dad had solar hot water. He took care of it and fully understood its operation and limitations, but its much too complicated to be a mainstream item in homes.

I like the idea of selling power back to the utilities. It would be nice to make the power company a backup to your primary inhome system.

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1985 380SE Blue/Blue - 230,000 miles
2012 Subaru Forester 5-speed
2005 Toyota Sienna
2004 Chrysler Sebring convertible
1999 Toyota Tacoma