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Replace incandescent light bulbs with LEDs.

Replace or retrofit non-energy efficient light fixtures.

Install LED exit signs.

Remove or disconnect unnecessary light fixtures.

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

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

Install timers or photocells on outside lights.

Implement a regular lighting maintenance program.

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

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.

Use task lighting where feasible.

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.

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.

Use hot water wisely.

Find and fix water leaks.

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

Install faucet aerators and efficient showerheads.