48 volt system. The advantage to 48 over 24 is lower current, smaller gauge wire $, single series string of batteries.

1180 AH battery bank, 24-2volt cells. A nominal 50V's x 1180 = 59, 000 watts capacity. We use about 8 KW's a day. Battery bank gives us 3 day storage discharging down to 50%. Very rare to go 3 days w/o sun or wind.