Company

  As the sunflower (tournesol) turns with the sun, the future energy system must follow the availability of renewable energy.

tournesol energy offers consultancy and develops software to understand and optimize future energy systems and markets.

Prof. Dr. Oliver Ruhnau is the founder and director of tournesol energy. He has worked on energy systems and markets for about ten years. 

Oliver is an assistant professor at the University of Cologne and a research scientist at the EWI Institute of Energy Economics.

Prosumer (LichtBlick). Simulating and evaluating home energy systems with solar, batteries, heat pumps, and electric vehicles. 2024. Report.

Imbalance costs (Utility). Developing a strategy to minimize imbalance costs with smartly metered customers. 2023-34. Related publication.

Balancing markets (Aggregator). Estimating incremental revenue potential when demand flexibility is offered on balancing markets. 2023.

Heat electrification (TSO). Modeling future heat pump load and implications for energy storage requirements. 2023. Related publication.

Storage requirements (Think Tank). Modeling storage requirements in a 100% renewable electricity system. 2022. Related publication.