For most of the people, probably the biggest single factor against low energy LED lighting as a substitute to the soon-to-be-phased-out regular incandescent bulb is the cost differential. There's no question make fish an LED equivalent bulb (for instance a 6w LED spotlight as being a direct replacement for a 35w GU10 halogen lamp) is significantly costlier than either the initial or even a CFL alternative.
There are however three important points to be aware of about the higher price for low energy LEDs when compared with incandescent as well as saving CFL lights.
First, the cost difference reflects the fact that using LED for general purpose domestic lighting is still quite novel, though increasing manufacturing levels and consumer take-up will drive the retail price down dramatically once both come fully on stream on the coming months.
Second, and partially associated with the observation above, could be that the price of LEDs drops by the factor of twenty over each decade. This characteristic is reliably predicted by Haitz's Law (very similar to Moore's Law for computer chips and then for similar reasons, principally because LEDs are, just like computer chips, pure electronic products). Haitz also states that LED performance (level of light per watt of electricity) increases tenfold on the same decade.
Third and maybe most intriguing would be the fact as far as the price of domestic lights are concerned, the buying price of lights is almost entirely irrelevant. It's an extraordinary yet easily provable fact that regardless of whether regular lamps were no cost and Leds cost, let's say something outrageous like $80 each, it could be vastly less expensive to acquire LED low energy lights.
The reason behind this really is simple: the cost of electrical lighting is the price of the force i.e. electricity. It matters it's unlikely that any jot just what the actual light bulbs cost; it's what it costs to operate them that actually counts. Also, since LEDs are tens of thousands of hours (used, decades of usage) you simply must pay the purchase price once, unlike regular bulbs which last only upto 2000 hours or maybe more than one year.
The second biggest gripe about low energy LED lighting is light levels and quality, or perhaps in technical parlance luminosity and lightweight color.
The worry about luminosity stems largely from historical notions of LED lighting applications like LED Christmas lights and pocket torches that happen to be clearly not capable of providing anything near useable domestic lighting. However, you can right now get one of the latest Sharp Zenigata LED number of light bulbs that is with a rating of 80 lumens per watt (way of measuring luminosity).
To know very well what this means, take into consideration that a regular 40w incandescent bulb delivers about 360 lumens as well as a 60w bulb about 540 lumens, which gives a ratio of 9 lumens per watt. Any situation that offers greater than 25 lumens per watt might be classed as an energy saving light. Zenigata LED light bulbs consume 6.7 watts and thus produce 6.7 * 80 lumens per watt that is 536 lumens, with a par with all the standard 60w incandescent light.
So you might, today, replace your 60w lamps with Zenigata LED light bulbs with a rating of 6.7 watts and consume 1/10th (or 90% less) electricity. And don't forget Haitz's Law? As a result of performance improvements, eighteen months from now you are able to receive the same 60w importance of lighting from just 3 watts.
LED light, that is similar to CFLs, has were rather a somewhat cool blue colour, whereas we're more accustomed to a warmer yellow white colour. This can be something which is currently commonly addressed with the use of colored phosphors (these do reduce luminosity but this really is consequently compensated for through the increasing lumens per watt yields for LEDs).
The third factor that are to weigh against low energy LED lighting is that this light emitted by an LED is intrinsically directional and scatter in all directions the way that incandescent and fluorescent lights do. This is really quite acceptable in the spotlight, flood light or bright reading lamp, but it is not especially effective for emulating general ambient lighting for instance a table lamp provides. Though again, you can find LED powered general lighting lights progressively more commonly available that a reasonable job here.
Two obvious positive factors for low energy LED lighting are ease of retrofit and ecological credentials (aside from simply saving energy).
LED lighting is acquireable for many common base fittings like mains powered GU10 and 12v MR16 spotlights and also the low energy standard base GU24 and also regular bayonet mounts and Edison screw fittings. LED lights also don't experience the numerous inherent problems related to CFLs for example: noticeably poor start-up times; reduced lifespan brought on by frequent switching on and off; and bulky unattractive bulbs.
But perhaps probably the most reputed benefits of low energy LED lighting over economical CFL lights is that they don't contain toxic mercury vapour and other unpleasant materials, thereby do not pose a serious health risk or require tiresome and expensive disposal procedures to guard the environment.
To sum up, the main perceived disadvantages of domestic energy saving LED lighting are cost and application (luminosity and color). Yet as we have seen, the cost of a light bulb is truly a red herring - the cost of electrical lighting is the price of electricity as well as on this score ultra low energy LED lighting puts the rest, including economical CFLs, completely in the shade (pun intended).
As regards luminosity and light quality, LED lights on balance deliver a cleaner, sharper light than CFL lamps and provide far more flexibility in terms of color choice and brightness.
Finally, the greatest advantage that low energy domestic LED lighting has over its rivals is the lighting industry itself regards domestic LED lighting since the future and will barely disguise its contempt for CFLs. Lighting giants such as Philips are on record as stating that they're not going to invest one particular dollar further into CFLs understanding that their entire research and development efforts are now provided to domestic LED lighting technology.
Those who follow eco-technology trends are well conscious of there is a world-wide phase-out of incandescent bulbs already well underway and scheduled to accomplish over the following year or two. Given international legislation to ban incandescent lighting and not enough support for your already dated and unloved CFL, it's near certain in which the way ahead for lighting lies - with low energy LED light. And as advantages go, I'd claim that one's pretty compelling.