I've just switched over most of my incandescent bulbs with compact fluorescent bulbs and figured that I will save over 1300 kw/hr per year in energy costs. At a conservative estimate of $0.10 per kw/hr, that's a saving of $130. per year. 6 dances and a drink. Or 1 mp session.
How is that you may ask? Let me count the ways.
I replaced 30 bulbs of varying wattage, from 40 to 100. A compact fluorescent bulb (cf) that provides the same lumens (light, dummy) as a 40 watt incandescent uses 9 watts. The other 31 watts is wasted energy and is mostly converted to heat. For a 100 watt bulb, a 23 watt cf produces more light, the 77 watts again is lost as heat. So in total, I replaced 1940 watts of incandescent bulbs with 449 watts of cf, for a saving of 1491 watts with no loss in lumens. At an average daily usage of 2.4 hours for each bulb times 365 days times 1491 watts, the savings is 1306116 w/hr or 1306 kwh.
In the summer, it will also reduce the heat generated by these lights, which should reduce my air-con costs. And I'm being a good corporate citizen.
How is that you may ask? Let me count the ways.
I replaced 30 bulbs of varying wattage, from 40 to 100. A compact fluorescent bulb (cf) that provides the same lumens (light, dummy) as a 40 watt incandescent uses 9 watts. The other 31 watts is wasted energy and is mostly converted to heat. For a 100 watt bulb, a 23 watt cf produces more light, the 77 watts again is lost as heat. So in total, I replaced 1940 watts of incandescent bulbs with 449 watts of cf, for a saving of 1491 watts with no loss in lumens. At an average daily usage of 2.4 hours for each bulb times 365 days times 1491 watts, the savings is 1306116 w/hr or 1306 kwh.
In the summer, it will also reduce the heat generated by these lights, which should reduce my air-con costs. And I'm being a good corporate citizen.