How do solar batteries work? (basic)

How do solar batteries work? (basic)

A solar battery storage will store your excess solar energy generation during the day. Once the sun is not shining and your solar panels are not producing electricity anymore, you will automatically be using the energy you stored in your battery (during the day), until that energy is depleted. The size of the battery will determine how many appliances you can run and can be determined according to your energy bills. 

The reasons for installing a battery could be: 
- You'd like to keep your solar energy instead of exporting it to the grid (to your retailer) 
- You'd like to be able to make yourself some tea if there is an energy black out in your area. Please not that not all batteries are "black-out" compatible and they also will not be able to power all your appliances in your house (this depends of their power output).  

Batteries are still expensive at the moment considering their warranty limit of 10 years. Of course it is likely that the battery will keep running past the warranty limit, but the expected payback period stills falls around 15 to 20 years.
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