Load Shedding? What Load Shedding. I'm off grid
I can cut n paste my answer from my blog for my newest build -
http://goingsolar.co.za/2015/08/23/off-grid/
Currently I have 6 x 300W panels, 2 x 220Ah GEL Lead Acid batteries, an FM80, and a Victron 3KW Multiplus running, which gives me about 2KW of usable battery +- in 16 hr period, or in easier to understand terms – about 125W / hr of usage outside of daytime.
This isn’t much!
Obviously the limiting factor here is storage (batteries), as the panels can generate far more than is needed to recharge the batteries or run the house.
What does my house need anyway in terms of power?
Lighting
Lighting is all filament LED, so is minimal
Kitchen = 5 x 3W
Bedroom = 1 x 8W
Bathroom = 3 x 3W
32W inside with all the interior lighting turned on.
Water
Hot water is provided by a solar geyser.
I’m not planning on supplementing the hot water with electricity to heat in winter unless I need to shunt excess power out from the solar panels at the inverter, so thats zero usage.
Fridge
Despite the complete lack of information on most websites regarding power usage for Fridge / Freezers, I’ve decided on this model – Bosch KGW36XL30
It claims to use 227 KWhr/year, so thats about 620W /day (or 25W / hr), which is quite reasonable. A++ rated.
Its R8,000 though, so not cheap!
Useful site for checking KW ratings here –
http://www.shopmania.co.za, as most of the manufacturer sites are useless.
Cooking
Gas oven / hob setup, so zero power usage (SMEG 60cm unit).
Electric Kettles, and toasters are a no-no, as they suck too much juice.
Washing
Washing machine should use about 1-2KW a wash, so can only be run daytime when there is sun.
Entertainment
LED TV should be fine, as they’re about 50-70W on average.
Not much headroom for other electronics, but its sufficient for the basics.