About
D4 is a renewable energy company headquartered in Utrecht, Netherlands specializing in Biogas, Wind, Geothermal.
D4 is a Dutch sustainable project developer that initiates, develops and co-invests in renewable energy projects. Its portfolio covers green gas (Bio-LNG and biogas), geothermal heat networks, wind parks, solar parks, battery energy storage and hydrogen. D4 works with municipalities, partners and local stakeholders, and manages projects through defined development phases from idea to realisation. It is linked to the AQ brand for batteries and solar, and co-developed the Energiecampus Leeuwarden.
Headquarters
Focus areas
Products & services
Business models
Value chain
Service areas (1)
Renewable energy project development
Initiates, develops, finances and invests in renewable energy projects including heat networks, geothermal, biogas, hydrogen, solar parks, rooftop solar, energy storage and new technologies.
Locations
Headquarters
Stationsplein 32, 3511 ED, Utrecht, Netherlands
Service regions
Projects
5Windpark Venlo
Wind farm of 9 turbines developed in collaboration with Greenchoice, Arcadis, Firan and Greenport Venlo, to be handed over to the local community once build-ready.
GR4SS
Grass digestion project converting roadside and nature area grass into green gas and peat substitutes for potting soil and liquid fertiliser. Bermgras ECL BV received an irrevocable permit in January 2025.
BioLNG ECL Energiecampus Leeuwarden
Biogas processing installation on the Energiecampus Leeuwarden producing Bio-LNG, biogenic CO2, green fertiliser, organic soil improver and clean water from manure and organic feedstocks.
Aardwarmte Rijnland
Geothermal heat network project in the Leidse region and Duin- & Bollenstreek, with Shell and Firan involved, aiming to supply over 50,000 homes and businesses from 2029.
AQ Zonnepark Stiens
Solar park developed under the AQ brand.
Credentials & affiliations
Partnerships
Ekwadraat, Koninklijke Oosterhof Holman, HoSt, Kekkilä-BVB, Firan, Shell, Greenchoice, Arcadis, Greenport Venlo, Bioclear Earth, Ecoras, CE Delft, FSFE, Mele, Rolande, AQ
People
Management & team (1)
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