Check out a new tool on the Dominion Web site – Holiday Lighting Energy Calculator. The calculator shows the energy savings between traditional holiday lights and efficient LED holiday lights. To use the this tool, all you need to know is what types of light strands you use, how many strands and how many hours you use them each day.Don’t forget to help others conserve energy and save money by sharing this page.
3 comments:
I "plugged in" the numbers on the energy calculator to find out the savings if we switched to LED lights for our Christmas tree. I was surprised at the savings. It truly does add up after awhile by changing your lights to energy efficient bulbs. Thanks for the great idea.
I realize this is a different subject, but is it possible to save on my utility bill by cogenerating electricity from a compressed air backup generator during peak times?
The reason I asked is because compressed air backup generators are coming on the market it may be possible to take my home off the grid during the day and recharge overnight.
Thanks for the blogs,
Art
Va Beach
Art -
Thanks for your question. Compressed air energy storage has been considered for some time. The problem is that the act of compressing air is very inefficient with lots of energy lost to heat of compression. It takes at least six times as much energy input into compressed air to get one horsepower of power output compared to an electric motor. So, the higher pressure air doesn't have much more energy than uncompressed air at the same temperature. That's why most compressed air energy generators must add additional heat to the air stream prior to passing through the turbine to generate electricity. Capturing the compressed air heat of compression is not easy, either. The waste heat air temperature from the air compressor is not hot enough to do much more than space heating or water heating.
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