Every day TESO sails across the beautiful yet vulnerable Wadden Sea. We therefore aim at further increasing sustainability in our services. In 2007 TESO was the first shipping company worldwide to use the relatively clean GTL fuel. It was a successful experiment focused on increasing sustainability for transport using environmentally and climate friendly fuel.

Since 2008 TESO has managed to reduce CO₂ emission by 30% due to using biodegradable fuel and the fuel additive Soltron. On board the Dokter Wagemaker 150,000 litres of drinking water are saved every year due to the installation of waterless urinals. TESO will continue to increase sustainability in the future. Currently TESO is experimenting with LED lighting on board the Dokter Wagemaker.