One thing to remember about any form of grid-tie: your system has to conform to their specs and inspected to make sure it does, plus it may not save you anything depending on your utility's policy.
I have Jackson EMC. They charge an extra $10/mo for net metering, but only pay you "avoided energy cost" for what you generate, which is basically the cost of the fuel burned to produce it plus transmission losses. In the summer afternoons on a time of use rate, I would pay 35c/kwh to use electricity from them, but they would pay me only 3 or 4 cents per kwh to buy electricity from me. Unless I sell them more than 250kwh or so, it doesn't even offset the metering charge.
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"I‘d put my money on the sun and solar energy. What a source of power! I hope we don‘t have to
wait until oil and coal run out before we tackle that." Thomas Edison, 1847 — 1931
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