Reply to post: Re: @ scatter

White LED lies: It's great, but Nobel physics prize-winning great?

scatter

Re: @ scatter

"Disingenuous toad"? It sounds like you're straight out of the 1920s you insufferable cur.

I wasn't being in the slightest bit disingenuous. I merely provided some numbers to show that your claim that it had flattened out wasn't quite correct. It's still trending down, albeit a lot slower than previously. The reason for this is entirely clear when you look at the evolution of demand from the different lighting technologies:

http://oi62.tinypic.com/2zg81dx.jpg

Unsurprisingly the rate of reduction decreases as the incandescent GLS lamps fall out of the lighting stock very quickly. It only takes a few years to get rid of the vast majority of incandescents so their contribution to lighting demand has effectively dropped off to zero.

Now the focus will shift to the 50% of lighting demand that is consumed by halogen lamps. That tiny blue strip in the above graph represents LEDs and that strip will rapidly expand as the halogen strip disappears. How soon that starts is down to the European Union (or electricity price rises). The EU has already made a start, phasing out the most inefficient halogens but it's the directional halogens that need to go as they form the bulk of that demand. Thankfully halogens only last 1,000 hours also so they'll disappear just as quickly as GLS lamps once the transition starts.

It'll do wonders for reigning in the winter peak in electricity demand too so initiating the phase out of halogens really should be a top priority.

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