For some time, PECO (our local electric company) has been subsidizing high-efficiency bulbs. The current special is the best I’ve seen. For about $5, you can now get industry leading CREE LED bulbs, as well as the highly rated Philips bulbs at your local Home Depot.
If you’ve been considering trying LED bulbs but have found the price to be prohibitive, now’s the time to try a few. The energy savings can easily pay for the bulbs in under a year and they’re so long lasting that you’ll likely never have to change them.
One big advantage these bulbs have over compact fluorescent bulbs is that they instantly come up to full brightness at any temperature, so you can use them in places where CFLs are useless, like outdoor (weather protected) fixtures and on motion sensors. Our driveway lights are all LED and they’ve worked great!
CREE 6″ downlights for recessed light fixtures are also on sale. I’ve installed these all over my home and have been delighted by the performance. The output light is clean and bright and they work well on dimmers. The only trick with these is that recessed light fixtures vary in size and shape so buy one to try so you can ensure that these are compatible with your fixtures.