Firefly Light Bulb Wattage – If you haven’t given the field of lighting much idea recently that’s likely because, in common with most people, the phasing out of traditional incandescent light bulbs hasn’t been exactly uppermost on thoughts. That is not really all that surprising; being able to change the lights at will hardly appears to be a major deal. We all do it all the time and as priorities move the whole business of lighting is comfortably off the radar.
Presently, the majority of low energy light bulbs available are CFLs which are some four times more efficient than incandescent bulbs (i.e. they just waste about 25% of the energy as heating, in comparison to 90%). However, CFLs are widely disliked by customers, manufacturers, and environmentalists. They have very poor aesthetic attributes (not actually want you to need for lighting), they’re awkward to eliminate safely as a result of their mercury content, and they’re complicated and costly to manufacture.
LEDs on the other hand score well on these points and a few more besides, the most obvious of which is that LEDs are not just 10 times more efficient than incandescents at current, however they double in performance every 18 months or so. |} The consequences of the (called Haitz’s Law) are astounding; in 3 years we must expect to see LED light bulbs that are 40 times more efficient. It’s no surprise that the lighting industry has en-masse chosen to abandon CFL growth and focus on LEDs.
So if you be buying LED light bulbs right now? And since modern LEDs last over 50,000 hours (compared to 2,000 for routine light bulbs) the return on investment just keeps rolling in.
Today some people will assert that it makes sense to wait until LEDs are both cheaper and much more efficient, but in the event that you run the math you will find that in fact, it’s better to replace perfectly usable light bulbs with LEDs today and then aim to replace them at a few decades, though they will still have decades of life. How so? Because the cost of electric lighting pretty much equates to the cost of electricity – it is all in managing costs, not the hardware cost.