Comment on Energy saving appliances by Mohammd.
I assume you mean 60-70 kiolawtt-hours. To average that amount of energy, you’d need a 10 kW solar array where I live, larger is most of the USA. That’s really at the high end of what people put up, unless they’re very well off.The best way to get an accurate estimate for your neesd is to contact a solar installer in your area. Look in an old-style phone book under “solar” and arrange for a free quote. Then you can decide whether you want to go ahead or not. The costs will likely be in the tens of thousands of dollars.If you want to see what we did, you can email me through my profile. However, our system is considerably more modest than the specs you propose. The usual strategy is to get your house’s energy usage down by conservation, insulation, and efficiency, first, then go for a much smaller solar installation.