As I wrote previously, I’ve been keeping tabs on how much electricity I use. Last week I got a whole-house electricity monitor called an OWL from natural collection and have been playing around with it. It’s surprising how surprising the results are, if you see what I mean. I know that switching on the kettle uses more electricity, but I was a bit taken aback at how much more.
The same goes for the oven although it makes it very easy to see when it’s up to temperature! I’ve put in the amount that Ecotricity charge me per kWh (10.65p, although the OWL only allows tenths of a penny so it thinks it’s 10.7p). With the oven on it shoots up to over 30p/hour, and when it’s up to temperature it goes right back down to about 5p/hour.
The lowest I’ve seen it yet is 1.2p/hour (at night), which is about 115W. I’m not sure what the accuracy of the measurement is. It does seem to drift about in a 30W range (i.e. by about 0.3p/hour), but perhaps there is some appliance doing that in standby for some reason.