Ruden AS

Making the shift happen
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Smart Geothermal Energy and Innovative Hydrogeology

About us

We believe in the sensible and innovative use of science and technology, which characterizes our business. In the development of energy systems, water exploration, borehole logging and geophysics, we lean heavily on methods and technology derived from the oil industry.

In 2007, Fridtjov Ruden established Ruden AS. Already in the same year Ruden received the DnB NOR’s Innovation award of 1,3 million NOK for contributions to knowledge-based business development in Norway, in the sustainability category. In his career of 40 years, Fridtjov has been all over Africa, and other places in the world, to find and drill for fresh water.

Over the last 10 years, Ruden has continued building on this experience with the development of innovative solutions in applied geology and hydrogeology. The unique insight and experience, gathered from drilling and testing thousands of wells in Africa and other places worldwide, is now being applied on Ruden Energy’s innovative energy systems, national water projects in Ruden Water, and applied hydrogeology in Ruden Geo Services.

What we can do for you

Our services

Ruden Energy uses technology from the oil and gas sector to provide clean, geothermal heating and cooling of buildings, infrastructure and energy storage. Ruden Energy has three concepts, LEAT, HEAT and iHEAT, based on open circulation of water through an enhanced fracture network.

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Ruden has over 40 years of experience with hydrogeology, both from projects in Norway and worldwide. Its roots lie in humanitarian water projects in Africa and South America. Currently their focus is on the exploration for large deep groundwater aquifers in passive margin areas and offshore, based on data and technologies from the oil and gas industry.

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Well logging, well testing and well flow enhancements are the core of the toolbox for Ruden's energy projects. These techniques are also offered as services in Ruden Geo Services.

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Meet the team

The people that make the shift happen!

Today, 11 employees work in Ruden, from our offices in Oslo and Stockholm. We also draw from a significant international network and operate both in Norway and abroad.

The strength of our team lies in our diversity; the combination of geologists, geophysicists, hydrogeologists and petroleum engineers enables us to be innovative and to think outside the box.



Kampala 1

3000 water industry representatives and experts meet at the biggest water congress in Africa

In February 2020, Ruden Water was participating at the 20th African Water Association international congress - AfWA, in Kampala, Uganda, presenting "Bridging oil and water sectors: Search Model for deep aquifers along passive margins".

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‘I’ve never seen such clean water’ - Fridtjof Ruden. Finansavisen (07-02-2020)

Ruden Water was featured in the Norwegian newspaper Finansavisen, in an article describing investors in Norway that find ways to make money with water.

Nairobi small

Strengthening the collaboration with Somalia Water and Land Information Management (SWALIM).

During the 3rd week of January, a delegation from Ruden Water paid a visit to Nairobi in Kenya. Here, Ruden met with SWALIM (Somalia Water and Land Information Management) to discuss the deep groundwater project in Somalia, share information and decide on collaboration between the two parties on the project. Ruden also visited the Norwegian Embassy, the project holder, to discuss the project progress.


‘NATO’s bombing of Libya’s oil infrastructure destroyed the world’s largest groundwater reserves on land.'

Fridtjov Ruden was featured in the Norwegian newspaper Klassekampen, Discussing the devastating effects of NATO's bombing on the groundwater reserves in Libya.


How 40 year old information from the oil industry secured water for 2 million people

More than 40 years ago, seismic profiles were shot in connection with oil exploration along the coast of Tanzania, partly funded by Norwegian assistance programs. No oil was discovered at that time, and the information was shelved. 40 years later we discovered the structures that made it possible to recommend drilling for water.


Ruden Energy awarded research grant from the Norwegian Research Council

Ruden AS Geo Solutions has been awarded a research grant through the EnergiX program “Innovation Projects for the Industrial Sector and Commercialisation Projects” from the Research Council of Norway.

Who we work with

Some of our clients and partners

  • Norwegian Ministry of Foreign Affairs
  • Båsum Boring
  • COWI
  • Sweco
  • MultiConsult
  • Statnett
  • Vegvesen
  • Selvaag Bolig
  • Oxer Eiendom
  • Wesselkvartalet
  • Lundin
  • World Bank
  • Titania AS
  • Schlumberger
  • GeoExpert
  • Hydropuls GmbH
  • European Geophysical Services

Get in touch

Contact us if you have any questions, or feel free to visit us at Forskningsparken in Oslo, the Engelsviken pier or Stockholm. We always have time for a chat about geology over a good cup of coffee!

Our office

Østfold: Moloveien 2

1628 Engelsviken, NORGE

Oslo: Forskningsparken (Oslo Science Park)

Gaustadalleen 21, 0349 Oslo

Stockholm +46 76 629 29 37

Telefon: + 47 69 36 41 41