I am looking to set up a cake delivery business and I am creating a break even for it to educate me about the costs it would entail. However, I have no idea how many kWs it takes to bake a cake. Can anyone help?
closed as not a real question by Aaronut♦ Dec 11 '12 at 23:31
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As @derober's comment notes, to get a precise number will be darn near impossible. However with some assumptions and generalizations, we can make a guess.
A little Google research yields lots of interesting results. Here's one from BestBuy's appliance buying guide (link to CNet's buying guide, which seems to be a direct cut-n-paste ripoff of BestBuy's. Or vice versa)
Appliance Temp Time Energy Cost Electric Oven 350 1 hour 2.0kWh $0.16 Electric 325 45 min 1.39 kWh $0.11 Convection Oven
You can customize it to your oven and cooking time with some math. Say you do a little research and find out your oven uses 3.5kW/hour and you need to bake your giant sheet cake for 2 hours straight.
3.5kW/h * 2h * 0.08$/kW = $0.56
Running it for a 12 hour day?
3.5kW/h * 12h * 0.08$/kW = $3.36