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Remove unnecessary lamps (de-lamp) in overlit areas. Check your light levels against standards from the Illuminating Engineering Society (IES) to see if you have areas that are over- or under-lit.

Maximize daylighting. After all, sunlight is free! Open or close blinds to make the best use of natural daylight and take advantage of skylights or other natural daylight sources to reduce lighting during daytime hours.

Install timers or photocells on outside lights.

Replace or retrofit non-energy efficient light fixtures.

Lower light levels, where appropriate, such as around computer monitors.

Implement a regular lighting maintenance program.

Use task lighting where feasible.

Turn off lights when not in use or when natural daylight is sufficient. This can reduce lighting expenses by 10% – 40%.

Remove or disconnect unnecessary light fixtures.

Install LED exit signs.

Install “occupant sensors” to automatically turn lights off and on.

Replace incandescent light bulbs with LEDs.

Use shades and blinds to control direct sun through windows in both summer and winter to prevent or encourage heat gain.

Set your water heater at the lowest required temperature.

Insulate hot water holding tanks and hot & cold water pipes.

Use hot water wisely.

Install faucet aerators and efficient showerheads.

Find and fix water leaks.