Comments on: How does a solar powered home stay powered when its raining?

By: Sunnyzhao

Sunnyzhao — Sun, 17 Jan 2010 22:00:59 +0000

the home solar power system have two type:
grie-tied solar power system or called on-grid system,
and stand-alone solar power system.

the on-grid system produce electricity when there is sunshine, and feed the extra electricity to the national grid, when there is no sunshine at night or raining, the house could get electricity from the national grid, so on-grid solar power system always have to meters, one is for selling electricity and the other one is for buying electricity.

for the stand-alone solar power system, the electricity produced by solar panel will charge into a battery system, because the voltage and current from the solar panel is unstable according the sun irradiation, so we need to charge into battery. But still, the electricity from battery is in DC, so we need a dc to ac inverter to produce AC 110V or 220V for our home appliance.

So the batteries will be charged in the sunny day, and could use in the night and raining days.
References :
http://solarphotovoltaic.blogspot.com

By: A.Ganapathy India

A.Ganapathy India — Sun, 17 Jan 2010 21:48:59 +0000

I have solar direct powered fan for my seat in my hall. It is working well from 7.30 AM.to 5 P.M on all days. To get higher efficiency I am not storing the energy in battery.But even if it is raining if the clouds are not affecting the radiation of sun lights it works well.The alternative method is storing the solar energy in battery cells and use it when it is cloudy.
References :
My research work.

By: Ben

Ben — Sun, 17 Jan 2010 21:41:59 +0000

I’ve found http://renewenergysources.blogspot.com/ is a great blog with some links to ways to use solar energy in your home.
References :

By: roderick_young

roderick_young — Sun, 17 Jan 2010 20:52:59 +0000

A grid-tied home will just have solar assist, so will run off the grid like any other house, same as it does at night. An off-grid home will have batteries. For periods of prolonged darkness, they will typically go to a gas-powered generator.
References :

By: Emily C

Emily C — Sun, 17 Jan 2010 20:47:59 +0000

Because the solar power charges up a battery that can last for a very long period of time, so at night time, when its raining or during solar eclipses you still have power
References :