Is it time to change your lightbulbs to LEDs?
Lightbulbs. The plastic carrier bags of the energy-saving world (doing a perfectly fine job, but an easy target for Energy Saving Measures) have been fiddled with for years, with the EU banning normal incandescent bulbss back in 2011. Even the supposedly better Halogen bulbs are scheduled for extinction in a few years’ time, but the standard replacement CFL (compact fluorescent) lights aren’t actually bright enough to find your way to bed at night. So what is the crack with energy-saving blubs and should we just bite the bullet and replace our bulbs now- while we’ve still enough light to do so?
At the moment you have three options for bulbs- halogen, CFL and LEDs, although halogen bulbs were doomed to go the way of incandescent bulbs in 2016, although they have earned a stay of execution from the EU until 2018 so far. You can’t even work out what bulbs you need in watts as (being part of the point) the watts used by the old incandescent bulbs far exceeded the equivalent energy use of the new bulbs; here’s a handy conversion table using the new-fangled notion of lumens:
Obviously, LEDs are by far the lowest energy guzzlers- and they also last the longest at around 25,000 hours of use. So why don’t we all immediately switch? Well, LED bulbs are also the most expensive. Nevertheless, there has to be a point at which it’s worthwhile making the switch, doesn’t there?
The handy folks over at the Centre for Sustainable Energy (CSE) worked out the equivalent running costs of using the three different types of bulb if you had the lights on all the time, or for six hours per day, as well as the comparable cost per bulb.
As you can see, using LED bulbs saves a little over £4 per year in energy but costs £6 more than CFL bulbs, meaning it would take two years to be better off, but at least you would be able to see (a main complaint against CFL bulbs is how long it takes them to get to (so-called) full brightness, even though the CSE now boasts that modern lights can get up to 70% bright inside one whole minute). And if you compare against the halogen bulb, you need to remember that while you’d manage a year’s continuous use with one LED or CFL bulb, you’d need at least four (and probably five) halogen bulb, meaning the cost of the bulbs is similar, but the energy bill saving is actually over £46 compared with LEDs. No wonder councils are retro-fitting all their lights with LEDs…
But who actually has the lights on all the time? If you look at the figures for six hours use a day, the actual cash savings are far lower, and it would take five years to earn back the extra cost of an LED compared with a CFL bulb. When looking at Halogen, you’d probably squeak by with one bulb too, but even so, the cost saving on your bills for one year will more than cover the extra cost of the bulb.
So it seems that, despite annoying EU nudge tactics, LED will be the way to go, purely from a protecting your pocket point of view. Only problem, of course, is how much it costs to change all your fancy light fittings