TOTALENERGIES ONETECH (TTE) is leading one of HAVEN’s demonstrators in Denmark, showing how hybrid energy storage systems (HESS) can support renewable‑based power plants. By integrating advanced EMS functionalities into the Risø Hybrid Power Plant, TTE is proving that hybrid storage can deliver both long‑term energy commitments and fast frequency support to the grid.
What’s the main role of TTE in HAVEN?
TTE leads the third demonstrator of HAVEN, focused on frequency support from a Hybrid Power Plant (HPP) in Denmark. Its role is to implement and validate an EMS that coordinates hybrid storage with renewable generation, ensuring that the plant can provide reliable energy commitments in the day‑ahead market while also delivering fast frequency response services.
Beyond the demonstrator, TTE contributes to defining use cases, analysing converter topologies, specifying system interfaces, and supporting the development of HESS prototypes. It also plays a role in sustainability assessments and business model development, ensuring that HAVEN’s solutions are not only technically advanced but also economically viable and environmentally responsible.
What are the main challenges TTE may face in the project?
For TOTALENERGIES ONETECH, the main challenge is to prove that hybrid energy storage can deliver multiple services at once, long‑term energy commitments for the day‑ahead market and fast frequency support for the grid, within a renewable‑dominated power system. Achieving this requires precise coordination between the EMS, converters, and storage technologies, ensuring that the system responds reliably even under sudden disturbances.
Another challenge lies in validating these solutions under real market and grid conditions. The demonstrator in Denmark must show not only that the HESS is technically sound, but also that it complies with European grid codes, is economically viable, and can be scaled to other hybrid power plants. Finally, TOTALENERGIES ONETECH must ensure that the lessons learned go beyond the pilot, contributing to sustainable business models and transferable solutions that accelerate the energy transition. Meeting these challenges is what makes its role in HAVEN so pivotal.
