Harald Norvik Chairman

Harald Norvik is former head of Statoil ASA. He is currently also serving as Board member of Conocophillips, PGS and Deep Ocean. He is Chairman of the Board of Havgul. Norvik brings vast experience in leading international companies and has chaired multiple Boards including Telenor ASA, SAS, Umoe, H. Aschehoug & Co. AS, TV2 ASA, Oslo Stock Exchange and DnB NOR ASA. 

In addition he has served as board member in E.ON Ruhrgas 

Dr. Christian Thiel Chief Executive Officer

Christian is a Chief Executive with focus on bringing new technologies from idea to installation. 

His primary experience comprises the energy and energy-related technology sector – ranging from e-mobility over renewable energies to energy storage. Christian joined EnergyNest in 2014 and has previously been working for BMW Group, UBS Investment Bank, McKinsey & Co. as well as SENVION. Christian holds a PhD in Economics, a Diploma in Business Administration as well as a B.A. in European Business.

Pål G. Bergan PhD, Dr.h.c., Professor Emeritus - Chief Technology Officer

MSc in Civil Engineering from NTNU, Trondheim and PhD in Computational mechanics from University of California, Berkeley. Professor of Structural Mechanics at NTNU for 15 years followed by 27 years associated as industry professor. Extensive publication of scientific articles and books, international lecturing and research cooperation including visiting professorships at Stuttgart University, UC Berkeley, Stanford University and KAIST, S-Korea. 25 years of management and industrial experience as Research director and Senior Vice President in DNV-GL, with responsibilities for strategic research, innovation and research coordination covering a very wide range technologies and industrial applications. Now passionately working with innovation, technology development and implementation of new technology as CTO in EnergyNest. Founder of Lattice Technology, S-Korea and EnergyNest.



Head office

EnergyNest AS
Olav Brunborgsvei 6
1396 Billingstad

California office

470 Ramona Street
Palo Alto, CA 94301
United States

Middle East office

Suite 114, Masdar Incubator Building, Masdar City
Abu Dhabi
United Arab Emirates

Spain office

Gonzalo Bilbao 25
1st Floor
41003 Seville

Send us a message

EnergyNest AS is constantly looking for experienced and talented new colleagues to help drive our company and technology further. As our projects and activities are global in nature, we are interested in professionals with strong a technical, academic and international background. 

If you believe your experience is relevant for EnergyNest please contact us: 


EnergyNest AS has developed a novel technology for solid-state thermal energy storage (TES). The core component of the EnergyNest system is the EnergyNest module with integrated heat exchanger.

The solid state material is a special kind of concrete termed HEATCRETE®.

HEATCRETE® has superior thermal performance over normal concretes and prior art concretes developed for TES purposes. HEATCRETE® has been developed in close collaboration with HeidelbergCement, a global market leader in aggregates and a prominent player in the fields of cement, concrete, etc.

A conservative limit is set to 550°C with the current version of HEATCRETE®. HEATCRETE® has been successfully heated up to 550°C without any signs of degradation.

The two main cost factors are the storage media (HEATCRETE®), and the integrated steel heat exchangers.

Other costs such as piping, insulation, building structure and other auxiliaries will be relatively higher for a small system than for a large.

The practical minimum size may be considered to be about 1 MWhth due to lack of economy of scale and since relative heat losses will increase as the system size decreases. The EnergyNest technology is fully scalable so there is no upper size limit to the storage capacity.

EnergyNest's TES technology is versatile and may be used for a vast range of applications. One such area is concentrated solar power (CSP) plants of parabolic trough, linear Fresnel and central receiver type. EnergyNest's TES systems can be designed for a range of heat transfer fluids (HTF) including thermal oil, water, steam, compressed gases and potentially two-phase HTFs such as water/steam in phase transition. CSP plants can be used for a wide range of industrial applications including electricity production, seawater desalination, process steam generation and enhanced oil recovery. The scalability and versatility of EnergyNest's TES solutions, especially the ability to operate at moderate temperature levels (100-250°C), could open up a range of new applications for TES solutions.

EnergyNest's TES solutions may enable cost-effective large-scale storage and use of surplus energy from fluctuating renewable energy resources such as wind and photovoltaic, especially in areas with high penetration renewable energy targets.

EnergyNest's TES technology will have significantly lower CAPEX and OPEX than a state-of-the-art two-tank molten salt TES plant. It is fully scalable and may thus be built cost-effectively even for medium and small sized TES projects. It is very versatile as it can operate with different heat transfer fluids, both liquid and gaseous, and over a wide temperature range, from subzero to 550°C or more. Being able to operate at lower temperature will open up a range of new applications for TES, where molten salt is not viable due to the high freeze point. The availability of HEATCRETE® material enables local content to a much higher extent than molten salt, which is currently sourced from only a few locations in the world. The superior performance of HEATCRETE® results in comparable thermal performance to molten salt at a lower capital cost.

As for normal concrete, HEATCRETE® is expected to be able to withstand millions of stress cycles during so-called proportional loading. With typically one cycle per day over the course of 30 years, thermal stress cycles amount to merely 10,000 cycles over the project's expected life. This is considered low cycle fatigue.