• Replace incandescent light bulbs with energy-efficient, compact fluorescent lamps (CFL) and slimline tubes and/or LED tubes. They typically make immediate savings of up to 75% and last up to ten times longer. Use tri-phosphor coated tubes for a more natural, brighter light.

• Use natural light wherever possible. Keep windows clean and encourage staff to open the blinds rather than turn on the lights. Daylight blinds are available that redirect light to the ceiling thereby preventing glare. Some also have perforated blades to allow a view of outside.

• Make sure lights can be switched off manually (particularly near windows). Installing zone controls and daylight sensors ensures that lights are switched on only when necessary.

• Install presence detector lighting controls in places not in constant use (e.g. toilets, store rooms and meeting rooms). These sensors provide savings of up to 30% on lighting costs.

• Ensure lighting controls are clearly labelled, especially if they are grouped together.

• For new installations, ensure you have several separate circuits so that lights in darker areas can be turned on independently of those in lighter areas.

• Run a ‘Switch Off’ campaign. It is always cheaper to switch off lights (including fluorescent lights) no matter how short the time period. Place stickers above light switches and use posters and emails to remind people.

• Consider the whole-life cost savings of fitting energy efficient lamps. It may cost more initially to buy a CFL than an incandescent lamp, but when the lower running costs and reduced labour costs through less frequent lamp replacement are taken into consideration, the whole-life costs of CFLs are much lower.

• Ensure timers and sensors are in good working order and are set according to occupancy times.