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How much electric used with 4 hours of oven?
Well, if it's a gas oven, zero. :) Most newer ovens use about 10 kilowatts per hour (10kwh), so my guess would be about 40kwh for 4 hours.
How can wind power be used to power homes schools and businesses?
It's quite simple. The wind turns a turbine which generates electricity that can either be stored in batteries to put directly into the grid. If you want more information on how wind power works check out the related link. A typical grade school using 40KWH of power could be run on less then 25 large wind system and 200 panels rated at 100 watts, assuming you have backup power (fossil fuel) available for low wind and sun conditions and the school did not use air conditioning or heat. The cost of this system would be less then the cost of 100 years of fossil fuels and could provide power for months without maintenence and not need replacement for a decade or so. Power costs would be well over ten times the current rate.
How much electricity does the average African household use?
Average consumption per person living in Mamelodi is around 4kWh per capita (i.e. per person living in the house). For middle income people it could be around 8kWh per person and the very rich sometimes spend around 25kWh per person per hour. For your family of 4, you should not be spending more than 40kWh per day (but this is already quite a lot). Remember, your household situation (like your pool, electric fences, garage doors, outside lights, security system and appliances inside all use electricity). The easiest way to save electricity is to limit your geyser use. 1 hour in the morning and 1 in the evening is enough for a family of 4. And don't use more than 1 fridge/freezer. You may think you need it, but really you don't.
