Comparing to last year’s statistics, Tokyo is being far more efficient with it’s energy. Even on the hotter days, Tokyo has been using less energy than before. Here’s a little graph showing recent data, but if you’d like to see the whole year then head over to the statistics page.
You can really see the difference just after the earthquake and now that it’s getting into the hotter months.
To make the graph, I used the power consumption stats from Tepco and the high temperature for Tokyo. Changed the temperature to Kelvin to make the numbers a little prettier and make sure there were no negative numbers.