Knowledge is our strength


Knowledge is our strength

Our geothermal competence, associated network and our understanding of energy systems have evolved for more than a decade. The broad experience and competence from drilling in the oil and gas industry is directly applicable for geothermal heat extraction.

Our team


Finansavisen, 19 May 2021


Geothermal Energy Nordic gets its geothermal dreams financed by the private equity fund Kerogen Capital.

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Finansavisen, 4 January 2021


Geothermal Energy Nordic delivers heat from wells deep into the ground. The company has engaged SpareBank 1 Markets to raise up to NOK 100 million for growth.

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E24 chronicle


The climate summit in Glasgow once again highlights the need for major efforts in the rapid development and commercialization of renewable energy solutions. Greenhouse gas emissions must be reduced and the temperature rise on the planet must be restricted.

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E24 podden


There is more than hydropower and wind power.

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Our investors and shareholders


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Established in 2007, Kerogen Capital is a private equity fund manager specializing in international energy. Kerogen has over USD 2 billion in Assets Under Management.

Founders and management team

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GTML was founded in 2019 by Thor Erik Musæus, Bjørn Ståle Tennfjord, Thilo Theloy, Pål Jarness, Sjur Talstad and Bjørn Inge Tønnessen. The founders have broad experience from geothermal energy development and the oil and gas industry.

Board members

  • Anish Patel

    Anish Patel, Chair

    Partner and Investment Committee member of Kerogen Capital. Over 15 years’ experience in investments and corporate finance in the energy industry.

  • Milos Amati

    Milos Amati, Board Member

    Vice President and member of the Investment and Portfolio Management Team at Kerogen Capital. Experienced in investing, corporate finance and M&A across the energy industry.

  • Julesvan Limborgh

    Jules van Limborgh, Board Member

    Managing Director and Head of the Technical team at Kerogen Capital. More than 35 years upstream oil and bank industry experience with a focus on geoscience, drilling and well testing operations, field appraisal and development, and commercial negotiations.

  • Tom Nysted

    Tom Nysted, Board Member

    Extensive management experience from industrial and commercial executive positions in several industries, over the past 13 years as CEO of Agder Energi. Deep insight into energy markets and the ongoing changes.

  • GTML 19 corr

    Pål Jarness, Board member

    Broad and solid experience from leading positions in finance and operations with a range of industrial and
    PE-owned businesses.

  • GTML-13

    Bjørn Inge Tønnessen, Board Member

    35 years of experience from the oil & gas and financial markets sectors. Founder and CEO of Spike Exploration & Edge Petroleum. Chairman of Oslo listed Questerre Energy.


Code of conduct


Our Code of Conduct governs our expectations and requirements for ethical practices in our business.