CO2 offsetting


Brussels Airlines and CO2logic are teaming up to give you the opportunity to offset your flight's CO2 emissions. Through this offsetting program you can support a CO2 reduction somewhere else that is equivalent to the CO2 emitted during your flight. Use the Greentripper calculator developed by CO2logic to become aware of the CO2 footprint.



Greentripper Calculator



Brussels Airlines takes action

CO2_logic One of Brussels Airlines' objectives for 2010 is the reduction of the company's carbon footprint through the so-called " programme". We know that with some efforts, we can make a difference. To save our planet it is crucial to decrease carbon emission. Just to give a few examples: three months of heating your home, seven thousand kilometers by car or one return flight Brussels-Marrakech thrusts one tonne of carbon dioxide in the atmosphere.

Our carbon offset programme is a new initiative. It means that we offer you the possibility to compensate your CO2 emission by paying a relatively small extra fee.

The Belgian company CO2Logic, specialised in offset, is selected as our partner in this carbon offset programme. In 2016, CO2logic decided to launch Greentripper. This platform is dedicated to travels and helps travellers limit their impact on the climate. For a small amount, travellers can neutralize the CO2 impact of their flight or the mileage they drive and support a (certified) project for the climate through concrete action.

Your "offset" will be used to develop green projects in our African destinations. The first project that will be supported is a woodstove project in Uganda: by using energy efficient stoves, people in Uganda will require fifty percent less firewood to cook, resulting in a reduction of 1,4 tonnes of carbon dioxide per stove every year.

Simply click here to calculate your CO2 emission and check how to compensate it.


Carbon Offset Programme Frequently Asked Questions



What is carbon offsetting?

The principle of voluntarily offsetting greenhouse gas emissions essentially comprises three stages:

- A "polluter" (an individual, organisation or company) carries out an audit of their greenhouse gas emissions. For individuals, this most often involves making an estimate using an on-line calculator. For organisations a more detailed audit is required, e.g; using the Bilan Carbone® method, a carbon assessment tool developed by ADEME. 
- Using this initial assessment, the programme or offset services consultant can immediately provide ways of reducing future emissions. This reduction in emissions often goes hand in hand with cheaper energy bills given the large part that fossil fuels play in our carbon-dioxide emissions. 
- Once the emissions have been worked out, the offset services client contributes to financing the planned reductions by buying carbon credits for a volume that equals their emissions for the previous year. By doing so, they offset their past emissions for which reduction measures are too late. These carbon credits allow support to be given to clean technologies in the so-called developing countries (e.g. wind energy or efficient stoves in Africa, etc.). On the one hand, the polluter has emitted greenhouse gases and on the other they have contributed to the destruction or the avoidance of a comparable volume of emissions. They have therefore offset their emissions.


Why in developing countries?

The Kyoto protocol divided countries into two groups. On the one hand, the industrialised countries (Japan, Russia, Australia, EU, United States etc.) historically responsible for climate change. On the other hand, the developing and emerging countries, (in Africa, South America, India, China, etc.) which are not historically responsible for climate change but which increasingly are going to emit CO2 in the future.

Carbon emissions are a worldwide problem and the place carbon emissions occur, here or in Africa, makes no difference to their influence on the climate. They therefore have to be reduced here and in those countries. Unlike the developing and emerging countries, here, in the industrialised countries we already have obligations regarding carbon emissions and businesses in our countries are now encouraged to increase their energy efficiency and use renewable energy.

We must therefore support the developing (and emerging) countries in changing quickly to the use of sustainable technologies (with a low carbon footprint) otherwise our carbon reductions here will not be sufficient if these rapidly growing countries emit increasing amounts which negatively affect our climate. For further information:


Why not here?

See the previous answer, since in this area we already have obligations and therefore any voluntary effort which is not subtracted from the emissions nationally (and therefore not allocated to your entity) will be allocated to those entities which have obligations (the Regions and Federal Government in Belgium). There are no carbon credits/CO2 offsets (for voluntary use) issued in Belgium since each additional reduction is already counted by the public entities and allocating additional credits would mean counting the same reduction twice. Only setting up the joint implementation mechanism would have enabled the risk of counting twice to be avoided, but in Belgium this mechanism has not been implemented by the public authorities.


Why is it important to offset?

Carbon offsetting is important as it allows:

- everyone to become aware of their impact on the climate 
- everyone to take part in various ways and according to their means with no obligation (use of cars, heating at home, journeys by air, etc.) 
- to go further as an additional tool to the first two stages, the calculation and reduction of CO2. Thanks to carbon offsetting, we can possibly reach carbon neutrality.


Why has Brussels Airlines chosen CO2logic?

Who are CO2logic?: CO2logic is an organisation specialising in the calculation, reduction and offsetting of carbon emissions. It comprises a team of ten people who are devoted and passionate about their work. This passion and rigour are reflected by the many awards they have received: BNP Paribas - Young Entrepreneurs Award 2007, Finalist of the Energy & Environment Awards 2008, Finalist of the Best Innovator Award 2009 organised by Solvay Business School and AT Kearney.

CO2logic has pioneered carbon offsetting in Belgium since 2006. An independent study by InterEnvironnmentWallonie/ULB acknowledged CO2logic as the most recommended Belgian CO2 offset company. CO2logic is also the only offset company to be certified by Forum Ethibel. By conviction and to be consistent, the CO2logic team travels and visits its clients' sites by folding bike combined with the use of public transport.


How do you calculate the carbon-dioxide emitted by your flights?


CO2logic is based on the emission factor as described in ADEME's Bilan Carbone®method v7.6. According to this official guide of emission factors a "Short-haul flight in an Economy class including upstream inputs without radiative forcing" triggers the release of 127 g CO2 per km.passenger ( = 137.4 g CO2 per km.passenger) A "Long-haul flight in an Economy class including upstream inputs without radiative forcing" triggers the release of 110.4 g CO2 per km.passenger ( = 138.9 g CO2 per km.passenger). In order to keep the calculation tool as simple as possible we use the average for the type of aircraft.

ADEME is the Agency for the Environment and the Control of Energy in France. This semi-public organisation is recognised around the world for their tool/method for the calculation of greenhouse gas emissions known as the Bilan Carbone.


The request for carbon offsets is made on-line

Requesting carbon offsets for a flight is made on-line after ordering your plane ticket. Brussels Airlines customers will be invited to offset the carbon emissions linked to their journey. Carbon offsetting is voluntary, so there is no obligation. This contribution is entirely voluntary and non-reimbursable by Brussels Airlines. Brussels Airlines gains no financial benefit from the contributions made to the carbon offset of its flights.

For any question linked to your contribution, please contact CO2logic:


Payment method

The carbon offset transaction is made in the same way as other purchases on the internet, by bank card or by bank transfer. Payments are carried out through the Belgian company, Ogone, the quality reference for on-line transactions.


Carbon offset proof

Those people who have calculated and paid their carbon offset will automatically receive their carbon offset certificate from CO2logic/Greentripper ( by email.


Is this not simply to make us feel guilt-free?

If someone has to take a flight it is better to offset it than to do nothing. Your contribution is used to reduce tonnes of carbon in developing countries which match what you emit by flying. These reductions in these developing countries would not happen without your contribution.


Who already offsets their air travel?


Increasing numbers of people want to reduce the impact their air travel has on the environment. Many well-known figures (from the world of show business, politics and the business world), but also increasing numbers of ordinary travellers aware of their impact on the climate and wishing to act to protect it.


How much do carbon offsets cost?


It all depends on the quality of the carbon offset projects, but in the top quality category projects (Gold Standard or Certified by the United Nations) Greentripper supports, it is €12 exclusive of VAT per tonne of CO2. A minimum of 1 ton will be invoiced in order to cover the costs of the secure financial transaction platforms (Ogone) and administrative costs.


What guarantee is there that the selected projects will be successful?


We only offer projects which are running and which are certified by Gold Standard and/or the United Nations (UNFCCC). By supporting these sustainable projects it will allow others to be created.


The supported projects are mainly located in Africa, why?


Through the carbon offset programme, Brussels Airlines wishes to support sustainable development projects in Africa located in the countries served by Brussels Airlines. Brussels Airlines also supports a number of humanitarian projects on the African continent through its CSR programme, the " for Africa".


Why do you only use projects certified by the United Nations (UNFCCC) and/or Gold Standard?


These international standards are recognised around the world and offer the greatest guarantee that the carbon offset is of high quality. For further information: and


What projects are supported?


The CO2logic projects supported are carbon reduction projects certified by the United Nations (UNFCCC) and/or Gold Standard. These projects not only have a carbon reduction aspect (climate) but also socio-economic benefits for the local population.

A project supported in Uganda

Project: Protecting trees in Africa, Uganda Avoiding deforestation in Africa In Uganda 95% of the population depends on wood and charcoal for cooking which has created a large problem of deforestation. The projects supported by CO2logic seek to protect the trees, reduce deforestation and ensure improved living conditions for the local populations by reducing their exposure to toxic pollutants.

This project encourages the use of efficient ovens (efficient stoves) across the country by creating partnerships with local artisans, supporting sustainable distribution systems while subsidising the price of these efficient stoves making them affordable for the end user.

Each oven helps reduce wood and charcoal consumption by nearly 40% as compared to other cooking methods which creates savings of nearly 75 dollars per year per family (not negligible for the local populations). Each of these efficient ovens allows the creation of 1.4 tonnes of CO2 per year to be avoided. This is the equivalent of a return trip between Brussels and Washington DC.

This oven also allow a reduction of toxic polluting emissions to be made which contribute to respiratory illnesses such as pneumonia, a disease which especially affects women and children in Africa. UNICEF estimates that 2 million children die every year through pneumonia. Pneumonia is the greatest cause of child death and reducing air pollution in living areas is one of the best preventions.

This carbon reduction project could not have been set up without the financial support it gets from carbon offsets. The project and these carbon reductions are checked and certified internationally by Gold Standard (


A project supported in Kenya - The paradigm healthy cookstoves and water treatment project

This project seeks to improve health and incomes throughout Kenya by reducing time and money spent acquiring fuel for household and institutional cooking, and by providing local populations with improved access to clean water (through water filters).

Thanks to the water filters, families will use less wood to boil water in order to have drinkable water. The LifeStraw Family water filters will be replaced and disposed of every three years.

The LifeStraw® Family is a point-of-use microbial water treatment system intended for routine use in low-income settings. The system can filter up to 18,000 liters of water, enough to supply a family of five with microbiologically clean drinking water for three years.

These units will treat contaminated drinking water, and reduce the demand for conventional water treatment through boiling water with non-renewable biomass.

With the assistance of carbon finance, this project can be economically sustainable and provide a significant improvement in public health.

1 ton CO2 = 1 water filter for 1 family of 4 to 5 persons for a period of 9 months.