Is this plan a good idea

Ryland · 02-22-14, 12:24 AM

Put a Kill-a-watt meter on your fridge and freezer.
My fridge and freezer use about the same amount, just under 1kwh per day so if you have 4 sun hours per day you'll need about 300 watts of PV per fridge or freezer if you are running a battery based system because of all the losses that you have with battery based systems, then size your battery bank for at least 3 to 5 days of no sun, longer if possible, drained to 50% state of charge, unless you like lugging around dead lead acid batteries.

As far as splitting off the outlets, put a small sub panel in for those outlets that is designed for a generator with lock out switch for switching between grid and generator.

02-22-14, 12:24 AM	#11
Ryland Master EcoRenovator Join Date: Mar 2009 Location: Western Wisconsin. Posts: 913 Thanks: 127 Thanked 82 Times in 71 Posts	Put a Kill-a-watt meter on your fridge and freezer. My fridge and freezer use about the same amount, just under 1kwh per day so if you have 4 sun hours per day you'll need about 300 watts of PV per fridge or freezer if you are running a battery based system because of all the losses that you have with battery based systems, then size your battery bank for at least 3 to 5 days of no sun, longer if possible, drained to 50% state of charge, unless you like lugging around dead lead acid batteries. As far as splitting off the outlets, put a small sub panel in for those outlets that is designed for a generator with lock out switch for switching between grid and generator.