Then along came LEDs. I replaced all of our outdoor security lighting very quickly, and have now replaced over 90% of our indoor lighting with LED bulbs.
Partially to save on electricity, but mainly so we can run all lighting, refrigerator, boiler and pellet stove on a 2 KW generator, and eventually solar.
The smaller your generator, the longer your fuel lasts.
When I replaced a ceiling fixture I put LED bulbs into it and am very happy so far. Two forty-watt equivalent bulbs cost less than $10 each. I figure I'll save 65 watts * 8 hours/day * 365 = 190 kWh per year so it will pay off in about a year. And the light looks really nice compared to CFLs.
I just wish the 100-watt (or more) LED bulbs would get out into the market for a cheap price.