GEOTHERMAQ sets up in the Lyon region to accelerate geothermal energy development
A specialist in subsurface applications for geothermal energy, GEOTHERMAQ is continuing its growth with the opening of a new office in Lyon. Driven by a rapidly expanding market and major energy challenges, the company aims to leverage the regional ecosystem to develop its activities, with the support of ONLYLYON Invest.
Expertise dedicated to the subsurface
Founded in 2021 in Pau (Nouvelle-Aquitaine), GEOTHERMAQ is a service company specializing in geothermal energy, with a distinctive positioning: the company focuses exclusively on the subsurface component of projects. Its services cover all upstream and operational stages:
- geothermal feasibility studies,
- resource potential assessments,
- thermal response tests and pumping tests,
- project management assistance and engineering supervision,
- turnkey project delivery (EPC),
- performance monitoring and diagnostics of existing installations.
This positioning implies an ecosystem-based approach, working with complementary partners (thermal engineering consultancies, engineering firms, architects) to cover the entire value chain.
A sector driven by strategic challenges
Geothermal energy is currently experiencing strong growth, supported by several key factors. From an environmental perspective, it contributes to decarbonization goals by providing a local, renewable, and highly efficient energy source. It also supports energy efficiency and reduces water consumption, particularly in industrial applications.
From an economic standpoint, the sector benefits from significant incentive schemes, such as public subsidies and Energy Savings Certificates (CEE), enhancing its competitiveness. Finally, the regulatory framework—especially in the commercial and industrial sectors—is accelerating the adoption of sustainable energy solutions.
The Lyon region: a new strategic foothold
At the beginning of 2026, GEOTHERMAQ opened a new office in Lyon, marking a new strategic foothold for its development. Initially, the structure is based on a local presence dedicated to business development, prospecting, and monitoring initial projects. The company is currently hosted within a partner’s premises, facilitating its operational integration. In the medium term, the goal is to build a local team and support the scaling up of projects in the region.
This decision reflects a targeted development strategy, as the Lyon region stands out for its particularly dynamic geothermal market, a dense industrial and tertiary fabric, a high level of project development and specification activity, as well as favorable geological conditions—especially for groundwater-based geothermal systems. In addition, GEOTHERMAQ already had local contacts and opportunities, facilitating its establishment and confirming the strategic relevance of the area.
ONLYLYON Invest, a facilitator for establishment
As part of its move to Lyon, GEOTHERMAQ benefited from the support of ONLYLYON Invest.
This support included:
- connections with key players in the local ecosystem,
- easier access to professional networks,
- a better understanding of regional opportunities,
- communication support to announce its arrival.
With this new location, GEOTHERMAQ reaffirms its ambition to actively contribute to the development of geothermal energy in France. By leveraging the dynamism of the Lyon region and a well-structured local ecosystem, the company aims to accelerate its growth and contribute to the energy transition of territories.