To conserve electricity, create an office policy to ensure all the lights in your office are turned off, including lights in bathrooms, kitchen areas, and meeting rooms. You should also tell your employees to switch off lights in a room if they are going to be out of there for longer than a few minutes at a time.During the day, maximize natural daylight by using natural light instead of overhead or fluorescent lights. Turning off one fluorescent light for an hour a day can save 30 kg of carbon dioxide emissions per year.
Consider areas in the office where there is excessive lighting or lights that are turned on in rooms that are barely used. Remove these lights or suggest not using lights if daylight is enough. As well, switch the light bulbs to energy-saving bulbs, such as compact fluorescent (CFL) or LED bulbs, to save more energy.
 This will prevent air from escaping your office when the air conditioner or heater is running, which can be especially important for offices located in regions of the country that experience extreme temperatures.You can also prevent drafts in the office by keeping the front doors of the office closed and making sure the door shuts firmly behind someone as they leave so heat or air does not escape to the outside.
You should also clean and repair your office's heating, venting, and air conditioning (HVAC) system on a routine basis, or hire a repairman to come at least once a month. A clean and working HVAC system will help reduce your energy bills and make it easier for your office’s HVAC system to cool or heat your office.
Make sure all air vents are clear of paper, files, and other office supplies. Blocked air vents means your HVAC system has to work harder and use more energy to circulate cold or warm air in the office.
 Conserve your heat energy by setting the thermostat in the office at different temperatures in the winter and in the summer. In the winter, set the thermostat at 68 degrees or less during the day and at 55 degrees at night when no one is in the office. In the summer, setting the thermostat at 78 degrees or more will also help to reduce energy use in the office.During the winter, keep shades and blinds open in the office during a sunny day. This will heat the room naturally. Close the blinds at night to reduce the amount of heat lost via the windows. In the summer, keep shades and blinds closed to avoid overheating the room.
As well, after office hours and during weekends, energy can be saved by increasing the temperature of the thermostat during hot weather, and by lowering the temperature in cold weather.
Make sure all lights are turned off in your office at the end of the day.
Install weather strips on doors and around windows.
Modify the temperature in the office based on the season.
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