There are also water-saving devices, energy efficient lighting and double-glazing throughout.

Companies and households could also be rewarded for installing energy efficient lighting, for example.

Three years later, the building underwent its first major renovation when energy efficient lighting was installed.

Integrated design uses daylight to reduce electrical demand, and incorporates energy efficient lighting, motors, and equipment.

The free service reduces utility costs and carbon emissions simultaneously by switching low and fixed income households to energy efficient lighting.