DOD - Depth of Discharge.
My experience puts the cost of off-grid with batteries between $2500 to $3K per KWH used daily. With @1/3 of that cost reoccurring every 5 years to replace the batteries. So if 12KWH a day then $30K to $36K with $10k to $12k reoccurring.
Don't go by 1 months bill though. You need to look at worst case so need a years worth of bills to tell which is your worst.
WWW
My experience puts the cost of off-grid with batteries between $2500 to $3K per KWH used daily. With @1/3 of that cost reoccurring every 5 years to replace the batteries. So if 12KWH a day then $30K to $36K with $10k to $12k reoccurring.
Don't go by 1 months bill though. You need to look at worst case so need a years worth of bills to tell which is your worst.
WWW
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