Roughly 60% of global primary energy consumption is lost as waste heat. This represents a huge energy recovery potential: Transforming waste heat into useful energy could contribute to a smaller carbon footprint – and at the same time reduce the cost of useful energy.

Thermoelectric materials are a class of advanced materials producing electricity directly from heat. TEGMA develops systems for thermoelectric applications.

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Thermoelectric power generation requires high efficiency thermoelectric materials, a reliable technology for integration of these into thermoelectric modules, and a system that interface with the heat source. Tegma provides turn-key thermoelectric systems where all these aspects are incorporated.

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Thermoelectric generators (TEG) may be utilized in a variety of markets with large amounts of waste heat, including:


Reduced CO2 emissions
A TEG system can reduce the CO2 emission of a car by 3 – 6 %.

TEGma is developing thermoelectric solutions suitable for integration in the exhaust systems of both personal cars and trucks.


Reduced fuel consumption
A medium sized TEG system can reduce the fuel consumption from a ship substantially.

TEGma has verified its patented TEG system technology through several pilot systems installed in ships in operation.

Process Industry

Increased energy efficiency
Massive amounts of energy are lost as waste heat through e.g. hot reactor walls, off-gases and cooling water. The utilization of TEG technology to recover some of this energy will have a great impact on the total energy efficiency.
TEGma is currently developing and testing TEG systems with partners to recover waste heat from the process industry.

Sensor power

Battery-free wireless sensors
A small TEG system can solely power an autonomous wireless sensor network, e.g. a wireless engine monitoring system on a jet engine.

TEGma is in the process of developing a unique TEG system which can act as a “battery” for wireless sensor networks.

Our vision

TEGma will become a leading supplier of complete thermoelectric solutions

About TEGma

TEGma is established in a market characterized by a strong need for waste heat recovery solutions. TEGma has completed several pilot installations of TEG systems in industrial environments and is currently commercializing its products to meet the market needs.

Cooperation with leading research institutes and universities provides access to relevant competence and technology. Joint development with customers and suppliers ensures processes and systems suitable for large-scale industrialization, and applications that address key customer needs.

Thermoelectric modules are solid-state devices with many similarities with photovoltaic solar technology, both on the process and product side. TEGma is thus benefiting from the extensive photovoltaic experience and know-how in the Scatec group, the owner of TEGma.

Scatec is Alf Bjørseth’s company for developing new business ideas within the areas of renewable energy and environmentally friendly advanced materials.

Go to Scatec’s website

John Andersen Jr. is the CEO of Scatec Innovation AS and the Chairman of the Board in TEGma AS. He is the former Chief Operating Officer of the REC Group, where he held several top management positions during his 12 years with the company. Prior to REC, he worked in Borregaard Industrier. Mr. Andersen holds a Master of Business and Economics from BI Norwegian Business School in Oslo, Norway.

Dr. Torleif A. Tollefsen is the CEO of TEGma AS. He holds a PhD in Applied Micro- and Nanosystems from the University of Southeast Norway (USN) and an Executive Master of Management from BI Norwegian Business School. Dr. Tollefsen has extensive experience within R&D, technology and product development. He is the former CTO of TEGma and has previously worked at FMC Technologies, SINTEF Digital, University of Agder and Norwegian Well.


Dr. Ole Grimsrud is VP Technology and Business Development at Scatec Innovation AS. With a PhD in physics from Cornell University, Dr. Grimsrud has worked in the renewable energy sector for over 15 years, first at REC and more recently at Scatec. He now provides business insight, technology assessment and strategy within TEGma.

Dr. Andreas Larsson is a CTO in TEGma AS. He holds a PhD in Applied Micro- and Nanosystems at the University of South-Eastern Norway. Mr. Larsson has extensive experience from R&D and technology development with a focus on high-temperature applications. Previous positions include Senior Research Scientist at SINTEF Digital, Norwegian Well, and at TECHNI AS.


TEGma AS – where to find us:

Karenslyst alle 9C
0278 Oslo, Norway

Visiting address
Solbråveien 45
1363 Asker, Norway