Join us in our mission,
let’s rebase.energy
The energy transition is happening now. To become energy independent and fossil-free, we need to both be more resourceful and deploy clean energy resources. And we are in quite a rush to do it, if we are to mitigate climate change.
At rebase.energy we are dedicated to playing our part. We know the energy market, we are great at data engineering. That is why our mission is to build the world’s first open and collaborative energy modelling platform.
We believe energy modelling will be crucial to cope with the megatrends of Digitalisation, Decentralisation and Decarbonisation in the energy industry - basically to deploy clean electrons in the grid fast enough.

Sebastian Haglund
CEO and Co-Founder
MSc. in Energy Engineering
KTH, Royal Institute of Technology
Sebastian has experience working in power trading at a large utility company. He is passionate about contributing to the fight against climate change and strongly believes that the use of advanced algorithms has the potential to radically accelerate the transition to a sustainable energy system.
Mihai Chiru
CTO and Co-Founder
MSc. Distributed Systems
KTH, Royal Institute of Technology
Mihai is a Senior Data Scientist and software engineer with several years of experience as a consultant in the heat and power industry. Mihai has a strong drive to build smart systems that help transform data into real-world decisions. Mihai is a former practitioner of competitive programming and has participated in several national competitions in Romania.
Karl Thunell
CCO
MSc. in Industrial Engineering and Management
KTH, Royal Institute of Technology
Kalle has several years of experience as a Key Account Manager in the eMobility industry in the Nordics. He found interest for the changing energy landscape during his studies and he thrives in the intersection of technical know-how and business sales. He does not leave anything to chance, by bringing structure and creating win-win situations for all parties involved.
Ilias Dimoulkas
Senior Data Scientist
MSc. Energy Production and Management
National Technical University of Athens
Ilias is currently pursuing his PhD in the department of Electric Power and Energy Systems at KTH. His research work involves optimization and forecasting techniques in the power systems. He and his team obtained a second position in the wind power forecasting competition organized by the International Conference on the European Energy Market.
Henrik Kälvegren
Full-stack developer
BSc. Computer Science
KTH, Royal Institute of Technology
Henrik is a senior full-stack developer with several years of experience building intuitive products - all the way from UX and front-end design to backend architecture. What drives him is a combination of tackling technical challenges and solving real-world problems.