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If your in the U.S . I purchased and installed my own and have a little less than 10k into mine . My setup is 5kw. All it takes is a little time and research . Produced kWh today. The cost comes from laziness of others not doing there due research before jumping into things.

Have you ever want to join a solar farm? I have at Arcadia Power. I bought a few panels and they they take the cost off my energy bill each month. If you want to join to click on this link and save $5 of your next month bill for trying it out too.
www.arcadiapower.com/adam4720