In NC where the sun shines a lot, but electricity from The Grid is cheap what is the ROI on an 8kw solar system?

https://blog.ktz.me/was-solar-worth-it/

Was Solar Worth It?

In NC where the sun shines a lot, but electricity from The Grid is cheap what is the ROI on an 8kw solar system?

ktz.
@ironicbadger good write up! I've always felt the payoff needs to be under 10 years so not there yet. Someday.