Termonet Danmark

What Termonet Danmark does

Termonet Danmark is a Danish non-profit association (forening) founded in 2020 that serves as the national coordination and knowledge hub for thermonet technology — underground networks of uninsulated plastic pipes that carry brine at near-ground temperature to exchange thermal energy between one or more ground-source heat sources and multiple connected buildings. The association does not build or sell thermonet infrastructure; instead, it brings together municipalities, district heating utilities, private installers, drilling companies, research institutions, and citizen groups to standardize, document, and accelerate project deployment. Its core product is collective technology promotion and project facilitation, with execution carried out by a partner ecosystem that includes engineering firms (e.g., Norsyn, Damgaard Rådgivende Ingeniører), drillers (e.g., GeoDrilling, Varup Termiske Boringer), and heat pump manufacturers (e.g., Metro Therm).

The business model is membership-based: Termonet Danmark accepts public authorities, semi-public bodies, utility companies, private businesses, research representatives, and private individuals as members, with membership fees as the primary revenue stream. The association operates with a stated 2025 target of 100 established thermonets across Denmark, against a current base of 18 established thermonets, 25 related projects, 10 operational installations, and 160 active members. Documented outcomes include >96% CO2 reduction compared to oil heating in the Knabstrup case and 40–60% heating cost savings compared to gas heating in the Christiansgave project. The association does not charge project fees and does not own subsidiaries; it is governed by a board chaired by Søren Skjold Andersen, with Vice-Chair Bettina Møller Mikkelsen and board members including Kristian Karlsen and Morten Westergaard (Denmark's first municipal climate chief).

Distribution and growth occur through municipal implementation, utility company operation, and citizen-led initiatives, supported by an active multi-channel presence (website, LinkedIn, Facebook, X, case studies, conferences, and policy advocacy). Recent strategic moves include the 2025 European Lighthouse Heat Pump Award for the Termovejen project, a joint political proposal with Energifællesskaber Danmark and VedvarendeEnergi on energy communities, and a 14-company green business plan consortium for Region Sjælland financed via EU Regional Development Fund support. The association is not venture-backed, parent-owned, or publicly traded.

Name

Termonet Danmark

Legal name

Termonet Danmark

Website

https://termonet.dk

Company type

Private

Founded year

2020

Operating status

Operating

Headcount range

1–10 employees

Short description

Termonet Danmark is a Danish non-profit association founded in 2020 that coordinates adoption of thermonet (underground thermal pipe network) technology among municipalities, utilities, installers, researchers, and citizen groups across Denmark. It operates via membership fees and serves as a knowledge hub for collective geothermal heating and cooling projects.

Ownership category

akta.pro rank

Product category

Renewable Heating Infrastructure

NAICS

Steam and Air-Conditioning Supply (221330), Steam and Air-Conditioning Supply (22133)

SIC

Cogeneration Services & Small Power Producers (4991)

akta.pro primary industry

District Heating & Cooling Thermal Storage (Network-Integrated TES) (EUAFANAH)

Keywords

• Thermal energy networks
• Geothermal heating
• Collective heating solutions
• Renewable heating infrastructure
• District heating alternatives

Headquarters

HQ city

Denmark

HQ country

Denmark

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Membership Fees: Termonet Danmark is a non-profit association that operates through membership fees from public authorities, semi-public authorities, utility companies, private companies, research institutions, and private individuals. The association promotes the spread of thermonets on a non-profit basis.

Go-to-market motion1 record

Distribution channels3 records

Marketing channels7 records

Core offering

Termonet Danmark is a non-profit association that promotes and coordinates the spread of thermonet technology in Denmark. A thermonet is an underground thermal pipe network with temperature close to ground temperature, enabling heat exchange between one or more thermal sources and two or more connection points. The association brings together municipalities, utility companies, private businesses, research institutions, and citizens to share knowledge, document projects, and advocate for policies that accelerate deployment of collective heating and cooling solutions.

Product overview

Termonet Danmark is a non-profit association that promotes and coordinates the adoption of termonet (thermal network) technology in Denmark. A termonet is an underground thermal pipe network with temperature close to ground temperature, enabling heat exchange between one or more thermal sources and two or more connection points. The association serves as a knowledge hub, bringing together public authorities, utilities, private companies, researchers, and citizens to accelerate the green transition through collective heating and cooling solutions.

Differentiator

Problem solved

Functional benefit

Products and services

• Termonet (Thermal Network Technology) A thermonet is a collective underground network of uninsulated plastic pipes that supplies multiple buildings with heating and/or cooling. The pipes operate at temperatures close to ground temperature and distribute heat exchange fluid (brine) between buildings connected to geothermal heat pumps, enabling heat exchange between thermal sources and connection points. The association promotes the technology for use in areas where conventional district heating is not economically viable.

Quantifiable outcome

• CO2 reduction of >96% compared to oil heating (from ~230 tons/year to ~10 tons/year)
• +3 more outcomes

Named customers11 records

Segments6 records

Ideal customer profiles6 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

20 partnerships are on record, tiered core and minor.

• VIA University CollegecoreStrategic or Co-development Partner · 23 September 2025Led the Termovejen project and received the Lighthouse Heat Pump Award 2025 on behalf of project participants. Søren Erbs Poulsen from VIA submitted and accepted the award. VIA provides research leadership and academic expertise to thermonet development.
• Hedensted KommunecoreStrategic or Co-development PartnerResponsible for development of the Termovejen road infrastructure. Municipality that partnered with academic and industry players to implement the innovative thermonet project.
• PlanEnergicoreStrategic or Co-development PartnerContributed knowledge about best practices and economic analysis for the Termovejen project. Provides consulting expertise in energy planning and thermonet economics.
• GeoDrillingcoreImplementation/ SI/ Consulting PartnerDelivered the complete thermonet infrastructure for Termovejen project. Specialized drilling company with extensive experience in geothermal boreholes.
• BravidacoreImplementation/ SI/ Consulting PartnerInstalled the thermonet infrastructure for Termovejen. Major installation company serving the Danish market.
• Varup Termiske BoringercoreImplementation/ SI/ Consulting PartnerPerformed the near-surface geothermal boreholes for Termovejen project. Specialist in thermal drilling operations.
• DantonitcoreImplementation/ SI/ Consulting PartnerDelivered sealing materials (DantoCon Thermal C2L) for geothermal boreholes in Termovejen project. The only Scandinavian manufacturer of certified bentonite products.
• Metro ThermcoreImplementation/ SI/ Consulting PartnerDelivered 12 geothermal heat pumps installed in connected buildings for Termovejen. Danish heat pump manufacturer.
• Energifællesskaber DanmarkcoreStrategic or Co-development PartnerCollaborated with Termonet Danmark and VedvarendeEnergi on a political proposal for accelerating green transition through local energy communities. Joint advocacy for combining local electricity production with collective heating and cooling via thermonet.
• VedvarendeEnergicoreStrategic or Co-development PartnerEnvironmental organization that co-authored political proposal with Termonet Danmark and Energifællesskaber Danmark on energy communities and thermonet in rural areas.
• NorsyncoreImplementation/ SI/ Consulting PartnerLeading engineering firm with experience since 2017. Detailed design and project management of multiple thermonets including Vridsløsemagle (largest thermonet for existing buildings in Denmark), Bromarken in Jyllinge, and Rendebjergvænget in Tune. Offers A-Z project management including construction management and supervision.
• Energifællesskaber DanmarkcoreStrategic or Co-development PartnerNon-profit association promoting energy communities through networking and knowledge sharing. Founded August 2023. Actively advocates for combining thermonet with energy communities for local electricity and heating solutions.
• Energy Cluster DenmarkcoreStrategic or Co-development PartnerAdministers EU Regional Development Fund for the green business plan project. Facilitated funding and coordination of 14 companies in developing thermonet value chain in Region Sjælland.
• Damgaard Rådgivende IngeniørercoreImplementation/ SI/ Consulting PartnerWon the contract to develop the green business plan for thermonet deployment in Region Sjælland. Produced comprehensive economic analyses, project templates, and implementation guides.
• KlimadancoreImplementation/ SI/ Consulting PartnerDelivers and installs heat pumps for thermonet projects. Part of the green business plan consortium for Region Sjælland. Hosted demonstration of Termonet in Hyllegaard Høje.
• Hulgaard AdvokaterminorImplementation/ SI/ Consulting PartnerLaw firm that collaborated on the green business plan, providing legal expertise on ownership models and regulatory considerations.
• Kompas KommunikationminorImplementation/ SI/ Consulting PartnerCommunication firm that contributed to the green business plan for thermonet deployment.
• Sustain SolutionscoreImplementation/ SI/ Consulting PartnerAdvisory firm working on thermonet projects. Entered cooperation agreement with Lejre Lokalvarme for large thermonet project. Provides investment in energy savings and green energy.
• Kalundborg ForsyningminorChannel Partner/ Reseller/ DistributorUtility company member providing district heating and other utility services in Kalundborg area.
• Miljøstyrelsen (Environmental Protection Agency)minorStrategic or Co-development PartnerEnvironmental agency member that joined to support and understand thermonet technology for regulatory and policy purposes.

Scale indicators9 records

Recent moves6 records

Expansion highlights5 records

Broad incumbents

• Stockholm Exergi: Major Swedish district heating and cooling utility operating large-scale thermal distribution networks. Comparable as an established district heating operator transitioning toward geothermal and low-temperature networks.
• European Heat Pump Association (EHPA): Europe-wide industry association representing the heat pump sector, which awarded Termonet Danmark the Lighthouse Heat Pump Award 2025. Operates at a broader continental scope advocating for heat pump adoption as a key decarbonization lever.
• Energy Cluster Denmark: Danish energy industry cluster administering EU Regional Development Fund programs and coordinating green transition value chains — administered the thermonet green business plan project. Comparable as a coordinating cluster organization with broader scope than thermonet-specific promotion.

Direct peers

• Energifællesskaber Danmark: Danish non-profit association promoting energy communities, co-founded in August 2023 and a strategic mutual partner of Termonet Danmark. Targets overlapping stakeholders (citizens, municipalities) and jointly advocates for combining local electricity production with collective thermal solutions.
• VedvarendeEnergi: Danish environmental NGO that co-authored the 2025 political proposal on energy communities and thermonet with Termonet Danmark. Operates as a member-based association advancing renewable energy adoption with overlapping constituency.
• Dansk Fjernvarme: The Danish national trade association for district heating utilities — the closest analogue to Termonet Danmark, also a member-based organization promoting collective thermal distribution in Denmark, but focused on conventional insulated district heating rather than the uninsulated thermonet model.
• Høje Taastrup Fjernvarme: District heating utility operating thermonet-based local district heating in Høje-Taastrup municipality and an enterprise member of Termonet Danmark. Represents the operating-company counterpart to Termonet Danmark's association-level role.

Regional players

• Sveriges Fjärrvärmeförening (Swedish District Heating Association): Swedish national trade association for district heating utilities. Comparable organizational form and mission (promoting collective thermal distribution) but focused on Sweden's incumbent insulated district heating networks.
• Norsk Fjernvarme: Norwegian district heating industry association — structurally analogous to Termonet Danmark as a member-based national trade body, but operating in Norway with a focus on conventional district heating technologies.

Emerging players

• PlanEnergi: Danish consulting firm specializing in renewable energy planning and thermonet economics; core implementation partner in the Termovejen project. Comparable as a consultancy operating in the same thermonet value chain.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights7 records

Customer concentration

• Xx.com/TermonetDK
• Facebookfacebook.com/termonet.dk
• LinkedInlinkedin.com/company/termonet

Revenue estimate

Valuation estimate

Number of profiles

Profiles5 records

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 Termonet Danmark