nobody pays $900 yearly for electricity. If they say they do, they are lying. The national average electric bill is $250 monthly for a homeowner, and, an average rent's power costs $100+ monthly. Add taxes and fees, generation charges, distribution fees, transmission charges, and all of the other fees such as Pura, DPUC charges, you are already at $300 a month. Go to Texas and ask an average homeowner what they pay, it's closer to $500 monthly. Electricity is ridiculous and it isn't going to be getting any better because power companies have the right to charge additional fees to make up for losses. They just call it something else before the DPUC, PURA & The DOE get into it with them, they remove the charges and call it something new. Its a normal thing that happens with all utilities and it happens every year, without anybody stopping them. The cost to generate your own power with today's propane or gas generators would be considerably less cost than paying the power companies their costs.
Solar panels are now around $275 per panel per 315 watts (that's after their efficiency losses, minus maybe 10% more losses for the inverters transformation from the batteries, charge controllers, etc. Anyway, 50 of those panels would net you 15,750 watts at full sunlight. That's a huge home running at it's maximum potential all day long at zero cost. The average home uses 1000 watts rms or even less if all bulbs used are led. The stove and heat is what costs us, dryers, a/c units, etc. Still, electric heat can cost you 3500 watts per hour and water heaters another 800 watts, then, well pumps and other lighting, fans, etc., maybe another 500 watts. All said and done, you use 5800, maybe 6000 watts maximum at any given time. That means you'll have an initial 14,000 watts to use - 6000 watts = 8000 watts left over to store for other times, cloudy days, etc, while all along, when it is light out, the newer panels generate some electricity, not a lot, but, probably 70% of your use is powered by cloudy days during the day and the left is stored to be used at night and like I said, for the non generated energy used on cloudy days. The only problem most homeowners face are the days that their panels are covered with snow, and, new raising motors combat the snow and ice that panels face. Panels usually are guaranteed to last 20 or 30 years, and, the biggest maintenance fee is charge controllers, batteries, and inverters. An entire system with enough *** to power your home in it's entirety costs you approximately 18k to do all yourself, and, it would pay for itself in 5 years if you already pay $300 monthly. If you have this installed and get government grants, you have to remain grid tied and you'll save some money monthly, however, your equipment gets beat up bad and you have no left over energy, costing you the headache of constantly trying to save electricity, shutting lamps off, and doing all you could so you don't have a monthly bill, but, the taxes and fees are still there no matter what when you are connected to the grid, every month like clockwork. It pays to be off the grid and have zero electric bill!