Saving money with regard to energy is incorporating the use of common sense. Last Winter I still made credit on my account each month. I switched everything off that was on standby. i.e. t.v. and sky box. I unplugged my electric alarm clock during the day whilst at work. I only had the heating on for one hour (bedroom only) in the evenings whilst watching the T.V. in bed. I only used the light on the cooker hob to do all cooking as opposed to having the main kitchen light on. I had a shave every other morning with the light of the moon. I showered every other day (as opposed to every day) in the dark as the pilot light gave off enough light to see what one is doing (keeping the bathroom light off). I kept all the internal doors closed to keep the heat from dispersing around the bungalow. This may seem trivial but it all adds up at the end of the month. I was making around £6 in credit each month during the Winter.
Unfortunately common sense isn't very common with some people.