The cost electricity continues to rise in Sri Lanka. On average a household pays over 18,400 LKR on an electricity bill monthly. Although the renewable energy system is installed the benefits in terms of costs saving and environmental gains remains to be achieved due to a highly inefficient lighting system still in place. It was the client's first experiance with switching to solar from conventional energy systems.

To mobilize additional financial resource to implement an overall replacement of the old lamps with newer and a more efficient and smarter lighting in system. In addition, the lighting system must be controlled for best performance. Installation of occupancy sensors is recommended to remove operating sequence from manual to automatic controls.

The lighting system at the household is not efficient in terms of energy consumption. The existing lighting systems should be replaced with similar fluorescent fittings with T5 lamps and electronic ballasts, while the aesthetics of the existing lighting system is maintained. These changes will reduce the lighting energy consumption by approximately 35 percent.