The upfront cost of LED lamps do cost more than conventional lamps but they save a lot of costs over time from reduced energy usage, replacement and maintenance costs.
But how do you define expensive? Is it the up-front cost or is it the running cost of the lamp over time or the cost to change the lamp once it has failed?
If it is a new building, installing LED lighting is sometimes the same cost as traditional technology which means you will start to save from the word go.
Initial fixture costs may be higher for some LED lighting solutions than for comparable incandescent and fluorescent lighting solutions. But initial fixture cost does not account for the total cost of owning, operating, and maintaining a lighting system. Because of their long useful life, LED lighting fixtures avoid the maintenance and materials costs which multiple replacing of incandescent fixtures require over tens of thousands of hours of operation. And because LEDs consume far less energy, annual power costs can be reduced by up to 80%.. The total cost of LED lighting systems, therefore, can be significantly lower than conventional systems. In fact, payback on LED lighting solutions can often be realized in less than three years.