You can eliminate lights being left on accidentally by replacing many of the light switches with cheap motion detector light switches. They fit into the old box and are simply a switch with a small motion detector built in. You can use them as a manual switch or automatic. You can set how long the light stays on. A motion detector switch by the coffee maker turning on a low wattage under-the-cupboard light can eliminate having to turn on the big kitchen lights when you just want to refill your coffee.
If you upgrade your switches one per month, they often pay for themselves in that month, and are net savings after that.
Login using the form on the top of the page to post feedback (if you are a registered user). If you have not yet registered, click here to do so. It's FREE!.