Green Horizon carbon footprint tool

The Green Horizon carbon footprint tool, designed specifically for the hotel industry, is an easy and affordable way to measure your carbon emissions.

Through a calculation of your CO2 emissions via Green Horizon you can directly meet criteria set by green certification programs.

The methodology is designed to be applied by any hotel around the world, and has been designed in partnership with major hotel groups, however, it applies equally to individual hotels, large and small, regardless of the type of amenities and facilities offered.

Green Horizon incorporated all of the different emission factors, so that you don’t have to search for and update them regularly to get an accurate carbon footprint calculation. We do it for you!

The emission factors used by Green Horizon come from reputable, third party sources such as the Greenhouse Gas Protocol, the International Energy Agency, the Climate Registry, or national agencies.  

Much of the information on carbon footprint or calculation methodology from other third parties are solely based on estimated average energy consumption of commercial buildings. They are not specific to individual hotels and are not based on a methodology approved by the industry.

We apply, at the hotel property level, the methodology designed by the ITP and the WTTC known as Hotel Carbon Measurement Initiative (HCMI) and the principles of the Greenhouse Gas (GHG) Protocol. We are supported by the Breda University of Applied Sciences in the Netherlands.

Green Horizon Charity

Green Horizon and Green Partner are committed to sustainability. For this reason, 10% of the carbon footprint calculation payment will be given to charity. We have various charities to choose from with projects focused on health, international aid, welfare and nature & environment.

Calculating your CO2 emissions via the Green Horizon tool and directly collaborating with a charity initiative, will enable you to comply directly with social criteria requested by green certification programs.


Click Here to access the CO2 Tool

  is the first hotel booking site that indicates which hotels are green. This information is shown to customers during the booking process, BookDifferent provides an easy way to travel more sustainably and thus attracts guests who are looking for hotels that are truly committed to sustainability.

The results of the CO2 footprint calculations generated by Green Horizon shall be shared annually, if you so wish, with BookDifferent. With an accurate calculation of the CO2 footprint, BookDifferent is able to publish without estimates, the CO2-production from your hotel.  

Click Here to check the CO2 of your Hotel posted by BookDifferent