How do you know when it is a good deal to buy a solar panel. For example, what is a good cost per watt, how many volts should I expect, etc.
Both might be bigger. When it is cloudy and little solar (iciness) you'll have a breeze. When it is nonetheless and sunny, you could have the solar. When the batteries are charged, extra vigour from the windmill can also be shunted right into a resistance heater in a water tank, preheating home water, decreasing that price. Downside of windmills: There is a few noise. you do desire a tower of a few form to get above treeline. It's mechanical, so it's going to want periodic renovation and would possibly holiday, or will put on out, or be broken in a windstorm. Panels will final for many years, simply have to be wiped clean of snow within the iciness, and washed off, in case you are living in a dusty subject. They are hard, however the glass can also be damaged.
first okorder / example: house roof is 20' x 20' 20' = 240, so sq. inches of roof is = 57,600 say rain fall for your area is 3 per month on average. 57,600 x 3 = 72,800 of rain collected. Using the conversion chart link above, that many cubic inches of water = 750 gallons of water free per month. Look at your water bill and see how much you use. Solar panels take on average 2-20 yrs to pay themselves off, just in time for them to be replaced. Paddle wheels go on for just about forever. We still find large paddle wheel mills in the USA that are over 200 yrs old, and still functioning.
