Geotherm Energy Systems

What Geotherm Energy Systems does

Geotherm Energy Systems B.V. is a Dutch installer of sustainable energy systems founded in 1997 and headquartered in Bunschoten, Netherlands. The company specializes in ground energy (bodemenergie / WKO) systems alongside solar PV and battery storage, serving both residential (particulier) and commercial (zakelijk) customers including homeowners, businesses, project developers, and contractors. Its core technology portfolio comprises three proprietary WKO system variants — Doublet (two-source open system for large buildings), Monobron (two sources in one borehole for medium-sized systems), and Geothermsysteem (vertical 100m-deep heat exchanger using 100% water instead of glycol to eliminate soil-contamination risk, delivering approximately 50% CO2 reduction versus HR boilers).

Geotherm operates a sales-led, advisory-first go-to-market model: advisors visit customer sites to perform energy analyses and deliver tailored proposals, followed by in-house installation with a single point of contact, and ongoing maintenance including a 24/7 emergency service line. Revenue is generated primarily through one-time installation fees for energy systems, supplemented by recurring professional-services revenue from service and maintenance contracts. Notable enterprise customers include Thialf (ice skating stadium), Lidl Hoofdkantoor, Gamma, Vomar Distributiecentrum (1,100 MWp solar deployment), and Heinen & Hopman (700-panel / 182,000 kWh-per-year headquarters installation), alongside residential and education-sector projects.

The company operates under the SALOR-groep holding umbrella and works closely with sister company Heinen & Hopman Installaties on combined conventional-and-sustainable installations. It maintains company-wide certifications including VCA, ISO 9001 (specifically for bodemenergie), SIKB BRL 11000, BRL 6000-21, and InstallQ recognition for solar PV systems. With approximately 25 employees, hundreds of projects completed, and a reference base exceeding 20,000 installed solar panels, Geotherm is positioned as a mid-sized specialist in the Dutch ground-energy and integrated sustainable-energy installation market.

Name

Geotherm Energy Systems

Legal name

Geotherm Energy Systems B.V.

Website

https://geotherm.nl

Company type

Private

Founded year

1997

Operating status

Operating

Headcount range

11–50 employees

Short description

Geotherm Energy Systems B.V. is a Dutch installer of geothermal heating/cooling (WKO), solar PV, and battery storage systems, founded in 1997 and serving both residential and commercial customers across the Netherlands with in-house advisory, installation, and 24/7 maintenance services.

Ownership category

akta.pro rank

Product category

Renewable Energy Installation Services

NAICS

Ventilation, Heating, Air-Conditioning, and Commercial Refrigeration Equipment Manufacturing (33341), Ventilation, Heating, Air-Conditioning, and Commercial Refrigeration Equipment Manufacturing (3334)

SIC

Air-Cond & Warm Air Heatg Equip & Comm & Indl Refrig Equip (3585), Steam & Air-Conditioning Supply (4961)

akta.pro primary industry

Geothermal Heat Pumps & Ground-Source Systems (Residential/Commercial, Drilling/Loop Installation) (EUAMAEAH)

akta.pro secondary industries

Geothermal HVAC Installation (HSAOAGAE), Residential HVAC System Installation (Furnace/AC/Heat Pump) (HSAOAGAA)

Keywords

• Geothermal heating systems
• Ground energy systems
• Solar panel installation
• Battery storage solutions
• Sustainable energy installation

Headquarters

HQ city

Bunschoten

HQ country

Netherlands

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

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

Revenue model

1. Energy System Installation: Installation of sustainable energy systems including WKO (ground energy), solar panels, and battery storage for both residential and commercial customers. One-time installation revenue with full-service approach from consultation to installation.
2. Service & Maintenance: Ongoing service and maintenance contracts including 24/7 emergency service for urgent requests. Includes periodic maintenance to ensure optimal system performance.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels5 records

Core offering

Geotherm Energy Systems B.V. designs, sells, and installs sustainable energy systems — including WKO (ground-energy) systems for heating and cooling, solar PV panels, and battery storage — for both residential homeowners and commercial clients in the Netherlands. The company delivers full-service projects from initial energy analysis and advisory through installation and ongoing maintenance, supported by 24/7 service and multiple Dutch quality and safety certifications.

Product overview

Geotherm Energy Systems is an installer of sustainable energy systems offering a portfolio of products including commercial and residential solar panels (Zonnepanelen), battery storage solutions for both businesses (Zakelijke Batterijopslag) and homes (Thuisbatterij), and ground energy systems (WKO) comprising WKO Doublet, WKO Monobron, and Geothermsysteem variants. The company provides services from consulting through installation with ongoing maintenance support, serving both individual homeowners and commercial clients with integrated sustainable energy solutions.

Differentiator

Problem solved

Functional benefit

Products and services

• Zakelijke Batterijopslag (Commercial Battery Storage)

Quantifiable outcome

• 50% CO2 reduction with Geothermsysteem compared to HR boiler
• +2 more outcomes

Named customers11 records

Segments4 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Two partnerships are on record, tiered core.

• Heinen & Hopman InstallatiescoreStrategic or Co-development PartnerSister company (zusterbedrijf) with which Geotherm works closely, providing extra expertise and capacity for complex projects. They collaborate on complete energy installations, such as the W-installatie for School Sterrenlicht/Calvijn and sustainable energy solutions for Heinen & Hopman's own headquarters.
• SALOR-groepcoreStrategic or Co-development PartnerParent holding company under which Geotherm operates. The whistleblower policy (Klokkenluidersregeling) applies to all EU subsidiaries and international locations of the SALOR group.

Scale indicators4 records

Recent moves6 records

Expansion highlights4 records

Direct peers

• Technea Group: Dutch sustainable energy installer with offerings spanning solar, battery storage, and ground energy solutions, competing for similar residential and commercial projects across the Netherlands.
• Nijhuis Industries: Dutch sustainable energy and water technology company active in renewable energy installations including geothermal and heat pump systems, directly comparable to Geotherm's WKO and ground energy installation work in the Netherlands.
• ZBV Solar: Netherlands-based installer specializing in solar PV and increasingly battery storage projects, comparable to Geotherm's Zakelijke Zonnepanelen and Thuisbatterij product lines.
• Heinen & Hopman Installaties: Sister company of Geotherm under the SALOR-groep, providing installation expertise for sustainable energy and HVAC projects — explicitly cited as a strategic partner and the closest comparable installation business.
• BodemEnergie Nederland (BEN): Specialized Dutch trade and installation network focused on bodemenergie (ground energy) systems, overlapping with Geotherm's core WKO doublet/monobron offerings and Dutch regulatory certification footprint.
• Kardinale Installaties: Dutch installer of sustainable energy systems including solar panels, heat pumps, and ground energy solutions, serving a similar residential and commercial customer base in the Netherlands.

Broad incumbents

• Vattenfall (Netherlands): Large European utility with active Dutch operations in residential heat pumps, solar, and battery storage, representing a scaled incumbent competitor in the same decarbonization-driven customer segment.
• Essent (part of E.ON): Major Dutch energy supplier installing heat pumps, solar panels, and home batteries through partnerships, competing with Geotherm for residential sustainable energy projects across the Netherlands.
• Eneco: Major Dutch renewable energy utility offering heat pumps, solar, and increasingly ground energy solutions to both residential and commercial customers; a much larger incumbent competing for the same end customers.

Regional players

• DQ Installaties: Dutch regional technical installer offering sustainable energy solutions including heat pumps and solar, comparable to Geotherm's residential and small commercial installation business.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/geotherm
• LinkedInlinkedin.com/company/geotherm-energy-systems-bv

Compliance5 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 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 Geotherm Energy Systems