Forum Discussion
MrWizard
Jun 07, 2016Moderator
Assuming you want to run off battery and solar then charge batteries, trying to reduce electric charges?
Then solar must come into play, and be sufficient amount, and night rates electric charges preferably less than daytime charges
Remember take out 1kwHr and it takes 1.2kwHrs to recharge the batteries
Conversion losses come into play
With out solar it cost less to just use the utility power direct
Than to run down batteries then recharge them
IF you have the Solar to keep the batteries while running what ever
then only power being used is at night when the solar goes to sleep
and that is still cheaper than draining the batteries, then recharging them, the recharge power is cost more than the direct use power by a factor of approx 20 percent, unless you have say night rate that is over 20 percent less. and then you only brake even unless it is 30 percent or more less costly
Then solar must come into play, and be sufficient amount, and night rates electric charges preferably less than daytime charges
Remember take out 1kwHr and it takes 1.2kwHrs to recharge the batteries
Conversion losses come into play
With out solar it cost less to just use the utility power direct
Than to run down batteries then recharge them
IF you have the Solar to keep the batteries while running what ever
then only power being used is at night when the solar goes to sleep
and that is still cheaper than draining the batteries, then recharging them, the recharge power is cost more than the direct use power by a factor of approx 20 percent, unless you have say night rate that is over 20 percent less. and then you only brake even unless it is 30 percent or more less costly
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