Solar Powered Water Pumping System
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living off the grid question?
how many solar pannels would you need to power a house? i’m thinking you’d need enough for: the house, water pump in the well, any out buildings that need electric lighting. i’m thinking bout in the southern ohio/northern kentucky area. . . incase that matters for how much sun the area gets. . . how much would you have to invest for the hook up and maintance of the system?
thanks
You might expect something close to 2 hours at your rated maximum panel output /day in winter.
http://www.solarcraft.net/sun-hours-map.htm
Now every panel you buy is rated to have a maximum output, and you go from there.
You might get 3 hours a day on a year round basis.
You have to know how many kWh you would need to use during a winter day. and assume that for every kWh you need to use at night your solar panel will need to produce about 1.6 kWh to take care of your losses in storage.
You can likely cut your power usage a lot from what you use on grid if you go as far as using LED lights, putting the fridge in a cool basement, a small fridge, using only a small laptop, pumping your water by hand.
If just as an example you decide you can live with 20 kWh per day after allowing for storage, you will need something like 10 KW of maximum panel capacity.
That will provide more power in all other parts of the year.
Remember you need more lighting in winter, so allow for that.
Solar Water Pumping System Installation in a water well.
