Lighting the key to energy saving

A global switch to efficient lighting systems would trim the world’s electricity bill by nearly one-tenth. That is the conclusion of a study from the International Energy Agency (IEA), which it says is the first global survey of lighting uses and costs.

For the individual, the most obvious switch to make is from incandescent bulbs to compact fluorescent systems (CFLs), marketed in many countries as “energy-saving bulbs”.