Fly Green Fund » STS Education

Traveling with STS?

Have a fantastic, decarbonized adventure!

20 minutes fossil-free flight

Enter any amount (EUR)

Pay →

By choosing sustainabel aviation fuel, you reduce aviation emissions and drive the transition...

Do you want to reduce the carbon dioxide footprint from your trip and contribute to aviation’s climate transition?

At STS Education, we’ve teamed up with the non-profit organization Fly Green Fund to speed up the process of decarbonizing aviation. You can make a difference today by joining us on this journey toward fossil-free flights. Remember, every drop of sustainable fuel counts!

Have a fantastic, decarbonized adventure!


Quick answers

What is the Fly Green Fund?

The Fly Green Fund is a non-profit organisation offering individuals, businesses and public organisations a more sustainable way of flying through the use of sustainable aviation fuel (SAF). Our goal is to increase the demand for sustainable aviation fuel and to stimulate its production in Scandinavia. By increasing the use of sustainable aviation fuel the Fly Green Fund hopes to contribute to making aviation a more sustainable means of transportation.

Read more about Fly Green Fund

Why is sustainable aviation fuel important?

In order to reduce the rate of global warming anthropogenic carbon emissions need to be drastically reduced. Most of the carbon emissions in the aviation sector come from the burning of fossil fuels. Thus, every sector needs to end the use fossil fuels and turn to sustainable and renewable alternatives. The sustainable aviation fuel that Fly Green Fund purchase emits 70-80% less carbon dioxide than fossil jet fuel. 

By buying sustainable aviation fuel you help reduce the carbon emissions at the source and contribute to making flying more sustainable.

What are sustainable aviation fuels (SAF) made of?

Sustainable aviation fuel is produced from sustainable and renewable feedstocks. Sustainable fuel does not compete with food production or lead to deforestation. SAF can, for example be made from algae, residues from the paper or forest industry, domestic waste, waste oils from biological origin, slaughterhouse waste, camelina or carbon dioxide and water (so called electro fuels).

How does aviation handle its non- CO₂ emissions?

Aviation must, just like any other means of transport, reduce its impact on our climate. This includes the climate effects caused by non- CO₂ emissions. The engines on newer airplanes burn its fuel more efficiently with lower non- CO₂ emissions and so-called turbo prop aircraft never reach the altitudes. Thus, your choice of airline also matters. 

It is worth mentioning that many domestic flights, or flights under one hour, never reach altitudes where non- CO₂ emission cause additional warming.

Does sustainable aviation fuel reduce the “non Co2-effects”?

NASA (amongst others) have shown sustainable aviation decreases the non- CO₂ emissions and thus its impact. Using a 50% blend, will reduce the occurrence of long-lived contrails by 50-70%. The aircraft manufacturer Boeing has also noted that the fuel consumption is reduced when sustainable aviation fuel is used.

How can I fly more sustainable?

You can swish money to Fly Green Fund: 123 131 41 37 or pay with your credit card.

How much does aviation contribute to global warming?

Globally, flying accounts for approximately 2.4% of man’s annual carbon dioxide emissions. The total climate impact is estimated to correspond to up to 3.5% of man’s climate impact since emissions at high altitude can lead to Non-CO₂ effects thus increase the climate impact (read more about high-altitude effects here). In 2019, aviation accounted for approximately 5% of Sweden’s total CO₂e emissions, and domestic aviation in the same year accounted for the equivalent of 0.9 percent of Sweden’s total CO₂e emissions (The Swedish Environmental Protection Agency).

How are sustianble aviation fuels better for the evironment than fossil fuels when they both emit carbon?

Burning fossil fuels releases carbon that has been locked up in the ground for millions of years, while fuels derived from renewable feedstocks emits carbon that is part of the biogenic carbon cycle. Thus fossil fuel use increases the total amount of carbon in the biosphere-atmosphere system while sustainable renewable fuels operate within this system. It is therefore very important that we work to replace fossil fuels by renewable non-fossil fuels with a lower impact on our climate.

Sustainable aviation fuels (SAF) are made from renewable feedstocks that nature regenerates relatively quickly, circulating the carbon emitted by the fuel. It is even possible to use carbon captured from the air to produce fuels suitable for current airplanes. For SAF to be considered sustainable the feedstocks used have to be produced in sustainable ways which means they may not harm animals, people or the nature. Such feedstocks can be residual products from the forest and food industry, slaughter waste, used cooking oil and even captured carbon. The EU renewable energy directive defines a series of sustainability and GHG emission criteria that bioliquids used in transport must comply with.