If the actual requirements of a house is 1200 Wh & DOD is 50% then how much energy we need to store in the battery?
Answers
Solar or wind energy needs to be stored somewhere and typically this is done using deep-cycle batteries - Flooded, AGM or GEL. For many installations of one or two solar panels, one large battery has enough storage capacity, but for larger systems it may be necessary to connect multiple batteries to create a 'battery bank'.
To work out how much battery storage capacity you need, first you need to know how much power your system will be drawing every day and then follow the simple calculations below. A general rule for all batteries is that the less they are discharged, the longer their service life.
Please be aware that when using an inverter, it should be connected directly to the battery bank and the battery bank must be of sufficient size to be able to cope with the potentially high current draw of the inverter. Theoretically, a current of 1A on the AC side of the inverter can become 20A on the DC side (A = V x W).
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