How much solar power required?
How much solar power is required to be self sustainable. For example run the TV fridge and AC?
Forum Discussion
We have 120 watts fixed on the roof. As we usually operate in sunny, beach conditions. with three type 29 AGM batteries the system is fairly self sustaininng. The system includes, lights, fridge electrics (propane is primary fridge source},TV( the satellite receiver operates from a 400 watt inverter). We charge the cell phones and the laptop batteries as needed with the inverter . If there is any overcast this system is not adequate. I'm considering doubling it to 240 watts or more. We have a built in propane generator which brings the batteries up well when needed. We also use the generator for A/C, coffee maker, microwave and electric frypan.
The 12volt system will not operate heating appliances. A rule of thumb is to monitor the battery voltage when it drops to 12.2 volts, roughly half of capicity, it is time to recharge. Allowing them to go below 12.2 volts will shorten the useful life quickly. I would say 120 watts would be the bare minimium needed.
The 12volt system will not operate heating appliances. A rule of thumb is to monitor the battery voltage when it drops to 12.2 volts, roughly half of capicity, it is time to recharge. Allowing them to go below 12.2 volts will shorten the useful life quickly. I would say 120 watts would be the bare minimium needed.
