When you install a solar PV System, every kilowatt-hour that your panels produce is one kilowatt-hour you don’t have to buy from your energy company. So if your system produces 80 percent of power you use, then you only have to pay that 20 percent difference. With a correctly sized system, you can produce as much power as you want to reduce your monthly bill by 20 percent, 50 percent or even 100 percent. This customer’s 5.6 kW system produced enough power that the monthly statement only reflected the utility company’s basic customer charge.

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