What Windunie does

Windunie is a Dutch cooperative energy developer founded in 2001, organized as Coöperatie Windunie U.A. with Windunie Groep B.V. as the operating company, headquartered in Utrecht. The cooperative's core activity is developing and co-owning renewable energy projects — wind parks, solar parks, battery storage, and energy hubs — together with landowners, energy cooperatives, and citizen initiatives, targeting at least 50% local ownership and ideally 90%. With more than 300 members, Windunie is involved in approximately half of all Dutch onshore wind projects, and member production exceeds 1,130 GWh annually, sufficient for nearly 300,000 households. The cooperative is involved in green electricity supply for approximately 3 million Dutch households through downstream customers.

The business operates across five revenue streams: (1) the Windunie-Pool, a collective electricity sales platform trading on the EPEX day-ahead and ENDEX term markets, charging approximately €1-1.5/MWh and consistently outperforming the EPEX benchmark by delivering €88,000 in additional returns over 7 years for an 850 kW turbine; (2) cooperative membership fees structured per MWh produced (€0.77/MWh with €450-€15,015/year caps); (3) project development services for wind, solar, battery storage, and energy hubs, in which Windunie takes a minority equity stake (targeting 10% alongside 90% local ownership); (4) technical, commercial, financial, and environmental asset management services for parks and batteries; and (5) Groenbalans, a wholly-owned subsidiary providing CO2 footprinting, CSRD/Science-Based Target advisory, and ESG services including as a platform partner to bol.com. The Windunie-Pool operates on a 3-year contract (auto-renewing annually) with an 18-month notice period, creating high member retention.

The go-to-market combines sales-led enterprise engagement (targeting landowners, farmer cooperatives, businesses, grid operators, and municipalities) with a community-led cooperative model that drives organic growth via member referrals and regional cooperative affiliations. The product portfolio extends into adjacent infrastructure: battery storage projects such as Bommelerbuffer (10-11 MW/20-22 MWh) and Batterij Park Zeewolde (65 MWh), closed distribution systems (GDS), hydrogen production at H2 Achterhoek (planned 2027), and local energy hubs coupled to local demand via the Local4Local model. The customer base spans Greenchoice (largest offtake partner purchasing ~90% of Pool volume), Vattenfall, Cargill, Iron Mountain Data Centers, Rabobank, Eneco, Kuster Energy, and major Dutch retailers, with project activity concentrated across Flevoland, Friesland, Drenthe, Zeeland, and Overijssel.

Name

Windunie

Legal name

Windunie Groep B.V.

Website

https://windunie.nl

Company type

Private

Founded year

2001

Operating status

Operating

Headcount range

101–250 employees

Short description

Windunie is a Dutch cooperative energy developer that develops and co-owns wind, solar, battery storage, and energy hub projects with 300+ member landowners and energy cooperatives across the Netherlands. It targets 90% local ownership, operates the Windunie-Pool trading platform, and is involved in approximately half of Dutch onshore wind projects.

Ownership category

akta.pro rank

Product category

Renewable Energy Development

NAICS

Wind Electric Power Generation (221115)

SIC

Cogeneration Services & Small Power Producers (4991)

akta.pro primary industry

Onshore Wind Power Generation (Utility-Scale) (EUACAFAA)

akta.pro secondary industries

Community & Distributed Wind Power Generation (Behind-the-Meter/Small Wind) (EUACAFAD), Wind Operations, Maintenance & Asset Management (Scheduled/Unscheduled) (EUAMACAH), Wind Farm Development & Permitting (Greenfield/Brownfield) (EUACAFAE), Hybrid Wind Power Plants (Wind+Solar+Storage Co-located) (EUACAFAH)

Keywords

• Onshore wind energy
• Renewable energy development
• Energy hub solutions
• Battery storage systems
• Cooperative energy services

Headquarters

HQ city

Utrecht

HQ country

Netherlands

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Marketing or Sales, Others

Revenue model

1. Windunie-Pool Electricity Sales: Windunie-Pool is the collective electricity sales platform for wind turbine and solar owners. Members sell their electricity through the pool, which bundles volume and sells it across multiple markets (ENDEX term contracts, EPEX day-ahead, and long-term contracts with Greenchoice and other offtakers). Windunie charges a management fee of approximately €1-1.5/MWh for pool administration. The pool consistently outperforms the EPEX market benchmark.
2. Cooperative Membership Fees: Members pay an annual membership fee based on their energy production. The fee is calculated per MWh produced using a tiered structure, with a minimum of €450/year and a maximum of €15,015/year. Membership provides access to the pool, project development services, asset management, and other cooperative benefits.
3. Project Development Services: Windunie earns fees for developing wind parks, solar parks, battery storage systems, and energy hubs. Services span from initial idea through to operation, including plan development, permitting, financing, construction management, and operational support. Windunie takes a minority equity stake (as co-investor) alongside local owners, typically targeting 10% co-ownership while enabling 90% local ownership.
4. Asset Management: Windunie provides technical asset management (monitoring, maintenance coordination, technical analysis), commercial management (contract management, performance analysis), financial management (administration, insurance, board representation), and environmental management (HSE, permits) for wind parks, solar parks, and batteries. Services are offered to both members and external owners.
5. Groenbalans Sustainability Services: Groenbalans, a subsidiary of Windunie Groep, provides CO2 footprinting, sustainability reporting (including CSRD compliance), science-based target advisory, and ESG services to businesses, including clients of major Dutch retailers. Revenue is generated through consulting and subscription-based sustainability reporting tools.
6. Energy Hub Subscriptions and Consultancy: Windunie offers energy hub feasibility studies, consortium formation, business case development, and energy system optimization services to businesses and municipalities. For example, the Energiehub Ens project involved a 10-12 week feasibility study for local businesses seeking to address grid congestion.

Pricing tiers

Go-to-market motion3 records

Distribution channels5 records

Marketing channels8 records

Core offering

Windunie is a Dutch cooperative that develops renewable energy projects — including onshore wind, solar, battery storage, and local energy hubs — with maximum local ownership (target 90%, minimum 50%). Through its operating company Windunie Groep B.V., it provides end-to-end project development, technical and commercial asset management, and collective electricity trading via the Windunie-Pool platform for its 300+ members, who are wind turbine owners, solar park operators, energy cooperatives, and citizen initiatives across the Netherlands.

Differentiator

Problem solved

Functional benefit

Brands

• Zeker Windunie: Platform for regional connection of energy demand and supply, enabling businesses to purchase locally produced sustainable energy
• Buurtwarmte Diensten
• Windmaand

Products and services

• Windunie-Pool Collective electricity sales platform for wind turbine and solar park owners across the Netherlands; members sign a 3-year contract (auto-renewing annually) and benefit from pooled trading, advance payments throughout the year, and final settlement after RVO correction amounts.
• Project Development Services Full lifecycle development of renewable energy projects for landowners, energy cooperatives, and businesses; covers initial idea, plan development, permitting, financing, construction management, and operational support.
• Asset Management Technical, commercial, financial, and environmental asset management for wind parks, solar parks, and battery installations, offered to both cooperative members and external owners.
• Energy Hub Development Local smart energy hubs combining local renewable generation, battery storage, and demand-side offtakers to address grid congestion and keep energy affordable for businesses and municipalities.
• Zeker Windunie Local energy matching service for businesses, enabling them to contract directly with local renewable producers for stable, local green electricity supply (e.g., AgruniekRijnvallei pilot for biological feed factory).
• Groenbalans Sustainability Services CO2 footprinting, CSRD-compliant sustainability reporting, science-based target advisory, and ESG services for businesses, including bol.com's sales partners and major Dutch retailers.

Quantifiable outcome

• Windunie Pool outperforms EPEX by approximately €88,000 over 7 years for an 850 kW turbine
• +6 more outcomes

Named customers11 records

Segments6 records

Ideal customer profiles5 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

16 partnerships are on record, tiered core and minor.

• GreenchoicecoreStrategic or Co-development Partner · 28 November 2024Greenchoice is Windunie's largest offtake partner, purchasing approximately 90% of the electricity sold through the Windunie Pool via a long-term agreement running through at least 2028. Additionally, Greenchoice retails 'Winduniestroom' to Dutch consumers, allowing end customers to buy electricity sourced from Windunie members. This partnership provides Windunie Pool members with an expected 10% price premium over individual turbine contracting.
• EnecocoreTechnology or Integration · 26 November 2024Eneco provides market optimization services for Batterij Park Zeewolde, handling the trading and optimization of the battery's charge/discharge cycles. This enables the battery to generate revenue from grid services, congestion management, and energy arbitrage while remaining locally owned.
• VattenfallcoreStrategic or Co-development PartnerVattenfall collaborates with Windunie (via SwifterwinT) on Windplanblauw (61 turbines, repowering project in Flevoland) and Windpark Hanze (15 turbines). Vattenfall takes a minority equity stake and provides access to its project development and operational expertise, while Windunie enables local ownership structures. For Windpark Hanze, Vattenfall purchases power for resale to industrial customers including Cargill.
• Kuster EnergycoreStrategic or Co-development PartnerKuster Energy is Windunie's partner in the H2 Achterhoek green hydrogen project at Windpark Den Tol. Kuster Energy (a fuel station operator in the Dutch-German border region) will transport the hydrogen produced by the electrolyser to local customers in construction and transport sectors. Windpark Den Tol (a cooperative of farmers and Windunie) provides the renewable electricity from 9 wind turbines (3.6 MW each) and a 16 MWp solar park.
• Energie SamencoreStrategic or Co-development PartnerWindunie is a member of Energie Samen, the national umbrella and advocacy association of Dutch energy cooperatives. Windunie and Energie Samen jointly develop sustainable energy projects in local ownership, including solar parks, wind parks, energy storage, and integrated energy systems. They also co-founded Onze NoordzeeStroom (ONS) to pursue cooperative ownership of offshore wind farms.
• Energie VanOnsminorChannel Partner/ Reseller/ DistributorEnergie VanOns is the energy supplier for the Energietuin Assen-Zuid solar park (co-developed by Windunie). Energie VanOns handles the supply of electricity generated at the Energietuin to local consumers, functioning as the distribution partner for the project's green electricity.
• GroenbalansminorStrategic or Co-development PartnerGroenbalans is a Windunie Groep subsidiary providing CO2 footprinting, sustainability reporting (CSRD), science-based target advisory, and ESG services. It has also partnered with SmartTrackers for advanced CO2-footprinting tools and with bol.com as a sustainability platform partner. Groenbalans serves as Windunie's extension into the corporate sustainability market.
• FREON (Fries Energie Ontwikkelingsnetwerk)coreStrategic or Co-development PartnerWindunie is a knowledge and process partner in the FREON consortium, which conducted the Local4Local energy hub feasibility study for the province of Friesland. Windunie's role included consortium formation, project management, process management, advisory input, and knowledge sharing. FREON was recognized in Trouw's Duurzame 100 as a top-10 initiative in the Energy and Climate category.
• Om | Nieuwe Energie, Zeeuwind, Grunneger Power, Energie VanOnscoreStrategic or Co-development PartnerWindunie co-founded Buurtwarmte Diensten, a cooperative initiative with these partners (along with Energie Samen) that supports the initiation, development, financing, realization, and exploitation of cooperative heating projects. Buurtwarmte aims to give neighborhoods control over their collective heat solutions and has an ambition of 1,500 neighborhoods taking initiative in making their area gas-free by 2030.
• Provincie FryslânminorOthersThe Province of Friesland commissioned and co-funded the Local4Local energy hub feasibility study with the FREON consortium, in which Windunie participated as knowledge and process partner. The study demonstrated that energy hubs could reduce energy cost outflow from Friesland by €50-100 million annually.
• Gemeente Oude IJsselstreekminorOthersThe municipality of Oude IJsselstreek supports the H2 Achterhoek green hydrogen project (Windpark Den Tol + Kuster Energy + Windunie) as it contributes to local sustainability goals. The municipality's backing is important for permitting and community acceptance of the hydrogen installation.
• Netbeheerder LiandercoreStrategic or Co-development PartnerWindunie works with grid operator Liander on multiple projects, including the Bommelerbuffer battery (which registered with Liander for congestion relief), Energiehub Ens (which involves making agreements with Liander for capacity sharing), and the Local4Local study in Friesland. Liander provides the grid connection and operates the network that Windunie's projects feed into and draw from.
• NWEA, NVDE, Holland Solar, Energy Storage NLminorOthersWindunie is a member of NWEA (Netherlands Wind Energy Association), NVDE (via Energie Samen), Holland Solar, and Energy Storage NL — the main Dutch industry associations for wind, solar, and energy storage. These memberships provide advocacy, networking, and industry intelligence.
• Onze NoordzeeStroom (ONS)coreStrategic or Co-development PartnerOnze NoordzeeStroom (ONS) is a joint initiative of Energie Samen and Windunie to develop the first cooperative offshore wind farm in the Netherlands. ONS participated in the IJmuiden Ver Alpha and Beta offshore wind tenders as a partner in the Noordzeker consortium (with ABP, APG, and SSE Renewables). While Alpha was won by a competitor, ONS is exploring whether power from Alpha can serve cooperative energy communities on land.
• SwifterwinTcoreStrategic or Co-development PartnerSwifterwinT is a cooperative of approximately 150+ local entrepreneurs, residents, and turbine owners from Flevoland that partnered with Vattenfall and Windunie on Windplanblauw. Windunie provides advisory services in project management, internal organization, stakeholder engagement, and land affairs. SwifterwinT members (including Arend Heida) hold the majority ownership of 47 turbines in the park.
• WattHubminorStrategic or Co-development PartnerWindunie hosted a 'Grote Parken' meeting at WattHub's first fast charging plaza for heavy construction equipment and electric trucks in Geldermalsen, fully powered by locally produced wind and solar energy from Betuwewind. Windunie is exploring similar charging plaza concepts with wind and solar parks as co-developer.

Scale indicators9 records

Recent moves6 records

Expansion highlights6 records

Others

• Energie Samen: Dutch national umbrella and advocacy association of energy cooperatives; Windunie is a member. Adjacent peer as the coordinating body for Dutch cooperative energy development and the partner on offshore wind (Onze NoordzeeStroom).

Direct peers

• Enercoop: French cooperative green energy supplier owned by its consumer-members, sourcing from renewable producers. Closest international analogue to Windunie's cooperative-of-producers model with pooled energy marketing.
• Greenchoice: Largest Dutch green electricity retailer and Windunie's primary Pool offtaker (~90% of volume). Comparable as a green energy customer-facing brand but operates as a retailer while Windunie is a producer-side developer and trading platform.
• Pure Energie: Dutch green energy supplier serving households and SMEs with locally produced wind/solar power. Highly comparable to Windunie on Dutch customer base and renewable-offtake focus, though structured as a corporate rather than cooperative.
• SwifterwinT: Flevoland-based cooperative of 150+ local entrepreneurs partnering with Vattenfall and Windunie on Windplanblauw. Comparable as a Dutch local-ownership wind cooperative working alongside Windunie in project development.
• Zeeuwind: Dutch regional energy cooperative developing wind and solar projects in Zeeland with local-ownership focus. Direct comparable to Windunie's cooperative, member-led development model and grid-connected renewable generation.

Emerging players

• Next Kraftwerke: German virtual power plant operator aggregating distributed renewable assets for energy trading and grid services. Comparable to Windunie-Pool in bundling production from many small producers for collective market access and balancing.

Broad incumbents

• Vattenfall: Swedish state-owned utility and a direct partner with Windunie on Windplanblauw and Windpark Hanze. Comparable as a large-scale onshore wind developer and corporate PPA counterparty operating in the Netherlands.
• Statkraft: Norwegian state-owned utility and Europe's largest generator of renewable energy, active in energy trading and PPA origination across Europe. Comparable to Windunie on the energy-trading side of Windunie-Pool and as a developer of wind assets.
• Eneco: Major Dutch utility with substantial wind/solar generation, energy trading, and battery storage operations. Overlaps with Windunie on project development, market optimization, and renewable asset management in the Netherlands.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/windunie
• LinkedInlinkedin.com/company/windunie

Revenue estimate

Valuation estimate

Number of profiles

Profiles19 records

Subsidiaries1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Windunie