What Deutsche ErdWärme GmbH does

Deutsche ErdWärme GmbH & Co. KG is a privately held German geothermal project developer founded in 2014 and headquartered in Karlsruhe. The company develops, finances, builds and operates deep geothermal (Tiefengeothermie) plants that extract thermal energy from water-bearing reservoirs at depths of 3,000–4,000 meters, primarily in the Upper Rhine Graben region of Baden-Württemberg. Its flagship project at Graben-Neudorf holds the German deep-drilling temperature record (above 200°C at 3,600 meters) and completed one of the world's largest geothermal injection tests in late 2025, injecting approximately 30,000 m³ of water over a three-week period to confirm sustainable reservoir productivity.

The technology stack combines hydrothermal access to fractured, water-bearing geological structures with proprietary safety systems — a multi-barrier well construction concept isolating upper groundwater from thermal reservoirs, a real-time seismic monitoring network using a traffic-light shutdown protocol, and continuous groundwater monitoring wells. Deutsche ErdWärme uses 3D seismic acquisition and numerical reservoir modelling for site identification and optimisation. The portfolio spans four Upper Rhine development projects (Graben-Neudorf, Dettenheim, Waghäusel, Karlsruhe-Neureut) plus the largest geothermal exploration permit in Germany — the 1,640 km² 'Erdwärme Metropole Ruhr' licence in North Rhine-Westphalia.

The business model combines three recurring-style revenue streams — long-term district heating supply to municipal utilities (Stadtwerke) and industrial customers, electricity generation via ORC or CHP, and project-equity returns from co-investment alongside partners — augmented by fee-based consulting services across the project lifecycle (geology, feasibility, drilling supervision, regulatory, stakeholder management). Go-to-market is direct enterprise sales into municipal utilities, industrial heat users and local governments, with heavy emphasis on community dialogue and municipal council engagement to secure site approvals. Capital intensity is high (deep wells cost tens of millions of euros each), and the company self-invests alongside partners, aligning incentives. Institutional financial backing comes from Copenhagen Infrastructure Partners (CIP), and operational partnerships include Huisman Geo, Ed. Züblin AG and SWK Stadtwerke Kaiserslautern. As of the input period, projects remain pre-commercial; recurring heat and power revenue has not yet commenced.

Name

Deutsche ErdWärme GmbH

Legal name

Deutsche ErdWärme GmbH & Co. KG

Website

https://deutsche-erdwaerme.de

Company type

Private

Founded year

2014

Operating status

Operating

Headcount range

11–50 employees

Short description

Deutsche ErdWärme develops, finances, builds and operates deep geothermal (3,000–4,000 m) heat and power plants in Germany for municipal utilities, industrial customers and municipalities, with projects in the Upper Rhine Graben and the Ruhr region.

Ownership category

akta.pro rank

Product category

Geothermal Energy Services

NAICS

Geothermal Electric Power Generation (221116), Steam and Air-Conditioning Supply (221330), Steam and Air-Conditioning Supply (22133)

SIC

Cogeneration Services & Small Power Producers (4991)

akta.pro primary industry

Geothermal Power Plant Development & IPP (Permitting, Financing, Project Development) (EUAMAEAD)

akta.pro secondary industries

Geothermal Power Plant EPC (EUAEAAAE), Geothermal Reservoir Engineering & Wellfield Management (Modeling, Stimulation, Reinjection Strategy) (EUAMAEAC), Geothermal Direct Use Heat Projects (District Heating, Greenhouses, Aquaculture, Industrial Heat) (EUAMAEAG), Geothermal Environmental & Regulatory Services (Permitting, Monitoring, Induced Seismicity, Water Management) (EUAMAEAL)

Keywords

• Deep geothermal energy
• District heating supply
• Geothermal project development
• Renewable heat generation
• Geothermal consulting

Headquarters

HQ city

Karlsruhe

HQ country

Germany

HQ region

Europe

Offices3 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Infrastructure, Operations, Technology or R&D, Supply Chain, Personnel, Marketing or Sales

Revenue model

1. District Heating Sales: Revenue generated from selling renewable, price-stable heat to municipal district heating networks and industrial customers. The heat is supplied continuously (24/7) regardless of weather conditions, providing a baseload renewable energy source.
2. Electricity Generation and Sales: Revenue from electricity generation using Organic Rankine Cycle (ORC) technology or combined heat and power (CHP) plants. The company can operate facilities as combined electricity and heating plants or as pure heating plants depending on regional infrastructure needs.
3. Geothermal Consulting Services: Fee-based consulting services covering potential studies, seismic interpretation, seismological assessment, reservoir studies, feasibility studies, risk management, well proposal development, basis of design documentation, drilling planning and supervision, drilling pad construction, monitoring setup, regulatory management, and stakeholder management.
4. Project Development, Construction, and Operation: The company develops, finances, builds, and operates geothermal plants as a project partner, investing its own capital into projects alongside municipal or industrial partners, generating returns through long-term heat supply contracts.

Go-to-market motion3 records

Distribution channels4 records

Marketing channels8 records

Core offering

Deutsche ErdWärme develops, finances, builds, and operates deep geothermal (Tiefengeothermie) plants targeting thermal water reservoirs at 3,000–4,000 meters depth in the Upper Rhine Graben and other German regions. The company sells renewable, baseload heat to municipal utilities and industrial customers via long-term heat supply contracts and can additionally generate electricity through ORC or CHP technology. It also provides geothermal consulting services spanning geological assessment, reservoir modeling, feasibility studies, drilling supervision, and regulatory management for external clients.

Product overview

Deutsche ErdWärme GmbH operates as a geothermal energy developer offering integrated deep geothermal (Tiefengeothermie) solutions. The company provides end-to-end services including project development, financing, construction, and operation of geothermal plants for heat supply and power generation. Core offerings include: (1) Tiefengeothermie systems for extracting thermal energy from depths of 3,000-4,000 meters; (2) Geothermie Consulting for advisory services across the project lifecycle; (3) Wärmeversorgung (district heating) for municipalities; (4) Stromerzeugung (power generation) via ORC or CHP technology. The portfolio includes active development projects in Graben-Neudorf, Dettenheim, and Waghäusel, all located in the Upper Rhine Graben region. Specialized services encompass seismic and groundwater monitoring, drilling site construction, and Multi-Barrier safety concepts.

Differentiator

Problem solved

Functional benefit

Products and services

• Deep Geothermal Energy Systems (Tiefengeothermie) Deep geothermal systems that extract thermal energy from underground reservoirs at depths of 3,000–4,000 meters to provide renewable baseload heating and power generation for municipal utilities and industrial operations.
• Geothermal Consulting Services (Geothermie Consulting) Advisory services covering the entire project lifecycle from potential studies and feasibility analyses through seismic interpretation, reservoir studies, risk management, well proposal development, drilling planning and supervision, monitoring setup, regulatory management, and stakeholder management. Targeted at municipalities, utilities, and project developers.
• Geothermal Project Development (Projektentwicklung) End-to-end project development services including site identification, geological surveys, 3D seismic data collection, reservoir modeling, simulation, well engineering, construction, financing, and operational management of geothermal plants. The company self-invests in projects alongside municipal and industrial partners.
• District Heat Supply (Wärmeversorgung) District heating supply service delivering CO2-free, price-stable thermal energy from geothermal sources to municipal heating networks and industrial facilities via long-term heat supply contracts.
• Geothermal Power Generation (Stromerzeugung) Electricity generation through Organic Rankine Cycle (ORC) technology or combined heat and power (CHP) systems integrated with geothermal thermal water resources. Facilities can operate as combined heat and power plants or as pure heating plants depending on regional infrastructure needs.
• Graben-Neudorf Geothermal Project The company's most advanced development project located at Ernst-Blickle-Straße in Graben-Neudorf. The first borehole confirmed temperatures exceeding 200°C at 3,600 meters vertical depth — a German record for deep geothermal drilling. The project includes a heating plant and potential CHP configuration, and a successful long-term injection test (30,000 m³ over 3 weeks) was completed in November–December 2025.
• Dettenheim Geothermal Project Geothermal development project in Dettenheim, Baden-Württemberg, in the 'Schiffmächerstücker' area, targeting thermal water reservoirs in the Upper Rhine Graben region. The municipal council voted in October 2021 to enter negotiations and building permit pre-application was approved December 2021.
• Waghäusel Geothermal Project Geothermal development project in Waghäusel targeting thermal water reservoirs in the Upper Rhine Graben region. The municipal council voted November 2021 to enter negotiations for a plant site in the 'Unterspeyerer Feld' area adjacent to the L560 road.
• Karlsruhe-Neureut Geothermal Project Geothermal development project located in the Karlsruhe-Neureut area of Baden-Württemberg, part of Deutsche ErdWärme's four Upper Rhine development projects.
• Erdwärme Metropole Ruhr Exploration Project Geothermal exploration project in the Ruhr area of North Rhine-Westphalia, covering an area of 1,640 km² from Oberhausen to Hamm. Represents the largest geothermal exploration permit in Germany, awarded by Bezirksregierung Arnsberg.

Quantifiable outcome

• Temperatures exceeding 200°C at 3,600 meters depth achieved in Graben-Neudorf – a German record for deep geothermal
• +2 more outcomes

Named customers4 records

Segments3 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

Eight partnerships are on record, tiered major, core and minor.

• SWK Stadtwerke KaiserslauternmajorStrategic or Co-development Partner · 6 May 2026SWK Stadtwerke Kaiserslautern and Deutsche ErdWärme are jointly investigating geothermal potential in the Kaiserslautern region. The goal is to determine whether heat from medium and deep subsurface can be used for climate-friendly district heating network supply, with the aim of decarbonizing the city's heat supply.
• ThermIon Project ConsortiumcoreStrategic or Co-development Partner · 1 January 2023BMWK-funded (Federal Ministry for Economic Affairs and Climate Action) research project developing innovative lithium extraction procedures from deep geothermal waters. Deutsche ErdWärme participates with partners from industry and research to advance sustainable lithium recovery technology.
• Huisman Geo B.V.coreStrategic or Co-development Partner · 28 March 2022Huisman Geo is a Dutch specialist in geotechnical solutions and onshore drilling, combining extensive construction and manufacturing knowledge with operational experience from hydrocarbon and geothermal drilling projects in Europe and the US market. Partnered with Ed. Züblin AG as joint general contractors for all drilling and well completion work.
• Ed. Züblin AGcoreStrategic or Co-development Partner · 28 March 2022Ed. Züblin AG is one of Germany's largest construction companies with over 13,000 employees and annual performance of approximately €4 billion. Part of the STRABAG Group, Züblin specializes in complex construction projects including special underground engineering. Partners with Huisman Geo as joint general contractors for drilling operations.
• women of new energies e.V. (w.one)minorOthersDeutsche ErdWärme became the first company from the deep geothermal sector to join women of new energies e.V. (w.one) in January 2022. The association promotes strengthening women's positions in the renewable energy sector through networking events, lectures, and mentoring programs. Deutsche ErdWärme employees benefit from these offerings.
• Schleith GmbH BaugesellschaftminorStrategic or Co-development PartnerLocal construction company from Graben-Neudorf awarded the drilling site construction contract for the Graben-Neudorf project in August 2021. Local company engagement demonstrating commitment to regional economic benefits.
• Landesforschungszentrum Geothermie at KITminorStrategic or Co-development PartnerCollaboration with the Geothermal Research Center at Karlsruhe Institute of Technology (KIT) for scientific expertise in geothermal technology. Prof. Dr. Frank Schilling serves as director and participates in public dialogue events.
• Umwelt- und Energieagentur Kreis Karlsruhe GmbH (KEA-Kompetenzzentrum)minorStrategic or Co-development PartnerRegional energy and environmental agency provides consultation support for district heating network planning and assists municipalities in geothermal project development. Collaborates on information events with Deutsche ErdWärme.

Scale indicators6 records

Recent moves8 records

Expansion highlights5 records

Emerging players

• Fervo Energy: US-based enhanced geothermal systems (EGS) developer with project development capabilities and corporate-offtake agreements. Comparable next-generation deep geothermal technology approach targeting baseload renewable power and heat.
• Eavor Technologies Inc. Canadian closed-loop geothermal developer pursuing commercial-scale deep geothermal projects in Europe (including Germany) and North America. Comparable advanced-geothermal technology approach and municipal/industrial heat-supply business model.

Broad incumbents

• E.ON SE: Large German utility with extensive district-heating networks and decarbonization mandates across multiple Bundesländer including NRW. Could become a strategic customer, partner or competitor for both Upper Rhine and Ruhr-area projects.
• EnBW Energie Baden-Württemberg AG: Major German utility headquartered in Karlsruhe with active renewable district-heating programs in Baden-Württemberg. Potential municipal-utility customer, partner or competitor for Deutsche ErdWärme's Upper Rhine projects.
• ENGIE SA: Global utility with deep geothermal and district-heating operations across Europe. Comparable broad incumbent exploring municipal heat decarbonization partnerships, and a potential acquirer of advanced geothermal developers like Deutsche ErdWärme.

Direct peers

• Vulcan Energie Ressourcen GmbH: German deep geothermal developer in the Upper Rhine Graben targeting lithium extraction and renewable heat/electricity from geothermal brines. Most direct German competitor, with publicly traded status providing a useful valuation reference for Deutsche ErdWärme's planned pipeline.
• Stadtwerke München (SWM) / Geothermie Grünwald: Operates the deep geothermal plant in Grünwald (referenced on Deutsche ErdWärme's FAQ page) plus additional Bavarian geothermal projects. Comparable municipal-utility-owned deep geothermal operator targeting district heating and CHP.

Others

• Ed. Züblin AG: Large German construction company (STRABAG Group, ~€4bn revenue) and Deutsche ErdWärme's general contractor for drilling across the Upper Rhine pipeline. Key execution partner whose continued engagement underwrites the project's construction schedule.
• Huisman Geo B.V. Dutch drilling/geo specialist and joint venture partner of Deutsche ErdWärme (with Ed. Züblin) for all Upper Rhine drilling. Provides drilling technology and operational expertise that Deutsche ErdWärme relies on as a strategic supplier.

Regional players

• Stadtwerke Karlsruhe GmbH: Local municipal utility in Deutsche ErdWärme's home city; identified as a potential offtaker for the Karlsruhe-Neureut project. Comparable municipal-utility counterparty model (Stadtwerke) that anchors demand for deep geothermal heat across Germany.

Market position

Strengths2 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/Dt_ErdWaerme
• Facebookfacebook.com/deutscheerdwaerme
• LinkedInlinkedin.com/company/deutsche-erdw%C3%A4rme-gmbh

Revenue estimate

Valuation estimate

Number of profiles

Profiles11 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 Deutsche ErdWärme GmbH