The Building Energy Calculator uses the information you provide about your facilities to calculate the greenhouse gas emissions that can be attributed to facility use for heating, cooling, lighting, and other amenities.

Please download the Commercial Building Energy Calculator Guidance Document to learn more about how this calculator calculates CO₂ emissions.

Step 1: Provide the Name of the Facility

The purpose of providing a name or address for this calculator is to differentiate between facilities if you choose to use this calculator for more than one facility. You may use any form of name or label you like.

Step 2: Provide the Area of the Facility

What is the area of the facility?

Step 3: Select the Type of Facility

What is your facility type?

Step 4: Select the Facility's Space Heating Configuration

What type of space heating is used?

Step 5: Select the Facility's Water Heating Configuration

What type of water heating is used?

Natural Gas Electricty

Step 6: Select the Facility's Air Conditioning Configuration

Do you have air conditioning?

Yes No

What type of air conditioning is used?

Step 7: Select the Energy Source for Auxiliary Equipment

What energy source do you use to run your auxiliary equipment?

Step 8: Provide Your Utility Bills If Available

Do you have all your utility bills for the past year handy?