The choice of LED lighting

Schafer Design have been carrying out some cost comparisons to establish the most cost effective nad environmentally friendly light sources.
A simple comparison of two products that offer similar light output with  an average
use of 4hrs per day      
                                                      
  LED PRODUCT                HALOGEN LAMP
product                                                  
  3W, 130lm LED                   20W halogen
useage                                                    
  4hrs / day                               4hrs/day
power consumption per day                  
  0.012kWh                             0.08kWh
running cost (@22c/kWh) per day        
  $0.0025                                 $0.0175
running cost per year                              
  $0.9125                                 $6.3875

annual saving per light                          
  $5.475

saving for average house with 50 lights
  $273.75

carbon emissions per day                        
  0.0095kg                                0.0625kg
carbon emissions per year                      
  3.4675kg                                22.8125kg
life expectancy                                        
  20,000hrs +                            3,000-6,000hrs
efficiency                                                
  approx 85%                            approx 10%
heat generation                                        
  cool to touch                          500 deg

As technology advances the cost of LED lights are decreasing rapidly and the payback period in choosing an LED over a Halogen light is now only 2-3 years. The short payback period plus the environmental advantages now makes the choice of light quite simple.