For a solar powered house, LED lighting is indespensible. For a household using power from the local power company, LED lighting will bring your energy cost down substantially if you tend to keep a lot of lights on for long periods. If you start now, you start saving energy now. If you wait 5 years, the price of LED bulbs goes down, but the price of power goes up. Why wait?
LED lighting WILL dominate the market and become the standard. You may as well get to know them now. Makers are claiming that within 5 years, most of these prices will come down to $10 per bulb. The industry is aggressive and growing fast. According to Haitz’s Law, the LED equivalent of Moore’s Law, the cost per lumen falls by a factor of 10 every decade while the amount of light generated by an LED increases by a factor of 20. So expect very cheap bulbs that provide good lighting and need barely any electricity in the near future. Amazing! Yes?