I can't go back 10 years as I haven't kept the figures, but I have just been comparing our electricity usage, year-on-year. Giving 2011 (the earliest year for which I have figures) an index of 100 our usage has been:
2011=100
2012=93
2013=76
2014=69
So our usage is lower every year and in 2014 had dropped 31% compared to 2011. Our house is totally electric powered with no gas, and our change from oil to GSHP heating was prior to 2011, so these figures are comparing like with like: there is no other energy use to confuse things.
I am happy with a 31% drop but I think there is potential to get it a lot lower. The big mystery though is how we have got it down so much because there have been no big projects to account for it, just lots of little things.
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