Tijmen Keesmaat
Team development
Tijmen is one of the three founding fathers of GreenTrust. Together with Jeroen, he is director of the holding company GreenTrust Group. He is an experienced project developer and project director of Burgerwindpark A2 Lage Rooijen, Zonneweide De Blauwe Poort and the ambitious plan Delta21, among others. From 2013 to 2021 he was director of the largest citizen initiative in the Netherlands: Windpark Krammer.
Those who know me know that I love being on stage. Not always in the spotlight, but rather steering in the background. As a bass guitarist, I fulfill that role as well. The bass may not be the most prominent instrument, but when it is missing, you notice it immediately. I also like that position in my work. What I love about music is that it gets better together. In a band, you have to be perfectly in tune with each other. Good interplay creates a great performance. At GreenTrust, we are committed to teamwork and collaboration to achieve the best results. And what’s totally awesome: we have our own company band, The Big Announcement, with colleagues. A reflection of the fun and team spirit in our company.
Expertise: Process-oriented, forward-thinking, founding-father, specialist in developing green energy projects and many years of experience at home and abroad.

My Team
Projects
We Aim for Impact. This Makes the Difference
Cooperative wind park A2 Lage Rooijen
Since 2017, Cooperation Bommelerwaar and GreenTrust have been working on a cooperative wind park at Lage Rooijen, directly east of the A2 motorway. In January 2026, the three turbines will be officially completed. With the three wind turbines, the park will then generate enough local green energy for about 10,000 households. And is thus booster of a sustainable municipality of Maasdriel.
Wind park Krammer
Wind park Krammer is the largest citizens' initiative in the Netherlands. on and around the Krammer locks, the nearly 5,000 members of cooperatives Zeeuwind and Deltawind have developed a wind park with 34 wind turbines. The wind park has an installed capacity of 102 MW, providing enough power for over 100,000 households. The power is purchased directly by Nouryon, DSM, Google and Philips.
Cooperative wind park Spinderwind
Members of 11 energy cooperatives in the municipality of Tilburg and region of Hart van Brabant took the initiative for a wind park in Tilburg in 2018. This together with Energiefonds Brabant. As of April 2020, the wind farm's four wind turbines provide enough renewable electricity for 7,500 households.
Solar park Larendeel
A group of Druten entrepreneurs has teamed up with GreenTrust to initiate Solar Park Larendeel. This plan provides for a solar park that can provide 37 GWh of sustainable electricity annually. Enough for over 12,000 households in the land of Maas and Waal.
Battery The Blue Gate
Solar meadow De Blauwe Poort is located in the municipality of Laarbeek. The park will receive addition of a battery storage system. This can store 2 MW of energy. GreenTrust is working on a request in principle and calculating the earnings model.
Windmill the North
Windmill De Noord is part of wind park Zonzeel along the A16 motorway. A unique project, as De Noord supplies electricity directly to the village of Terheijden. Through the Traais Energie Collectief, the residents of this village want to fully meet their own energy needs with locally generated sustainable energy.
VE Lički Medvjed
In the mountains of Otočac, Croatia, GreenTrust wants to develop the largest wind farm in Croatia. In a nature-inclusive and social way, so that nature and the environment benefit. In addition to feasibility, development and technical design, communication is key here.
Wind park Cahermurphy
It often blows hard in Cahermurphy, Ireland. A great place, then, for a wind park. There are now three Enercon E92 wind turbines and a fourth turbine will be added in 2025. Among other things, GreenTrust is providing the technical design, construction and management here.
Wind park Kroningswind
Kroningswind is an initiative of eleven farming families on the island of Goeree-Overflakkee in South Holland. 19 wind turbines have been built with a combined capacity between 70-80MW.
Services
We Aim for Impact. This Makes the Difference
News
Everything you want to know about new energy
23 January 2026Lieuwe reflecteert: hoe gaat het nu met de energietransitie?
20 January 2026Lieuwe reflecteert: hoe gaat het nu met de energietransitie?
11 September 2025Lieuwe reflecteert: hoe gaat het nu met de energietransitie?
19 June 2025Socially Inclusive Development: Together You Go Further
































