First of all, this is pretty impressive as it’s one of the most powerful LED bulb available to consumers using standard fixture sockets. It’s lumen (roughly power of light output) is equivalent to a 70W incandescent bulb or an 18-25W compact fluorescent bulb. However it only uses 17 Watts of power (about 25% of the incandescent).
Being an LED, it doesn’t have any mercury or other chemicals that a fluorescent might and it’s dimmable where most compact fluorescent bulbs aren’t.
OK, so this thing is $45. However, it’s expected to have a usable life of 25 times an incandescent bulb. So if you change your 75 light bulb every year at 1 dollar a pop, then the Philips LED will last for 25 years.
Now, here’s the big one though. That 75W light bulb, if you have a decent electrical rate is costing you a whopping one penny per hour. Doesn’t sound like much, but how many light bulbs are on in your house and how long per month do you run them?
The Philips bulb will cost you .2 pennies per hour. That 2 tenths of a cent per hour. You could run five light bulbs for the cost of one regular bulb or you could run one light bulb five times as long.
OK, let’s do a total life cost cycle here.
Incandescent: 1000 hour life, so you need 25 bulbs to equal one Philips bulb. So that’s about $25 in equipment. At one penny per hour, that’s $250 worth of electricity. Total cost is $275 dollars for 1100 lumens of light for 25,000 hours.
Philips LED: 25,000 hour life, so one bulb at $45. Electricity is .2 cents per hour, so that’ll run you $50 worth of electricity. Total cost is $95 for 1100 lumens of light for 25,000 hours.
That’s a pretty good deal. Multiply that by 10 bulbs in a house and you’re saving $1500 over the life of the bulbs. Once again, initial capital outlay is better than cost-over-time.
And if you move, just take them with you.
BTW: They don’t appear to be for sale yet, as none of the stores I tried had them or knew about them. They should be along directly.
UPDATE: I did forget to mention something. Unlike incandescent bulbs, LEDs do tend to fade slightly over time. Last I checked, it was roughly 5% of the power in SOME frequencies of light (not all) every 2-4 years depending. Fortunately, the frequencies don’t really affect humans. It just tends to make the LEDs look slightly more yellow over time.