I'm not sure how but my electricity use at home fell down to 1.07 kWh per day on average since October 2014 (before it was typically about 2 kWh per day), less hot food cooking, computer use and less being at home are the only possibilities I can think of. So in 2015 my electricity bill was 876 DKK but I paid 3036 DKK, so I get 2160 DKK back. In 2014 I got 1218 DKK back.
In 2014 I had to pay an extra 450 DKK for heating, so I decided that in the future I wanted to stop using my radiators for heating and instead put on more clothes. From 2015 I get 661 DKK back, so I think it has worked, and I can highly recommend it to people who want to save a bit. Maybe the winter also was a bit hotter than last year.