Re: questions re: installing solar panels to reduce electricity costs
There are numerous ****** guides and calculators where you can verify every number they give you. Or do the math yourself. Start with a sun hours map, here is one at random:
Get your sun hours:
Then you need to look up the guaranteed efficiency of your panels, and how much they drop off per year. Also, the efficiency of the inverters. Then just do some multiplication (perhaps with a spread sheet, one line per year) to find out how much power they will make yearly and compare that to your yearly usage.
Of course, energy costs will also rise, and in some states you might make more money selling the power during the day than it costs when you buy it back at night, as there are peak-rates and non-peak rates. Other states it's the same cost all day and night. Maybe add in the cost of a replacement inverter. You can make a rough prediction about how soon it will pay for itself. It will probably pay for itself several times over all while helping the environment.