I have seen a calculation that suggests that over the life of the machine the clock on a microwave oven uses more than the microwave does cooking!
Inverters that don't go into standby mode are another potential power waster but we'll deal with this when we talk about the various devices that a power system is comprised of. See our system components page.
2012 Many modern firdges need continuous power for their thermostats so we are finding that search mode can not be used as often as it once was. Fortunately with solar being so much cheaper now, an extra panel to compensate is not the financial burdon it once was.
So, before you plan to go off grid take a while to think about how much power you are using and for how long.
Perhaps a simple log book may be the answer. Have a think about seasonal changes.
I have noticed with our system we tend to use more power in summer because the fridge and freezer work harder. Its pretty difficult to measure how much your refrigeration is using, so allow 500-1000 watthrs. As an example: Our fridge and chest freezer combined use about 1000 watthrs a day. One of the better upright fridge freezers we sell is rated at 460 watthrs/day.
So grab that notebook and pencil and see how close I came with my 3 kilowatthrs / day Guestimate.