In this interview, Professor Poul Sørensen of DTU discusses the university’s important role in the HAVEN project. DTU, in collaboration with Total Energies, is leading the demonstration of the Hybrid Energy Storage System (HESS) at Risø HPP, a hybrid power plant combining wind, solar, and energy storage. Professor Sørensen explains how this demonstration aims to prove the effectiveness of HESS technology in enabling higher shares of renewable energy, especially in isolated power systems. He also outlines the key grid services the system will provide and how its technical and economic performance will be evaluated through real-world testing.

DTU’s main responsibility in the HAVEN project is – together with Total Energies – to demonstrate the HESS (Hybrid Energy Storage System) as an integral part of a Hybrid Power Plant combining wind turbine and solar PV generation with storage. The demonstration will take place in Risø HPP consisting of two wind turbines (2 x 225kW), two PV systems (160kWp + 175kWp) and the HAVEN HESS. Risø HPP will also include a Controllable Grid Interface, which will be used in HAVEN to test Risø-HPP as if it was connected to an isolated power system.

This picture shows Risø HPP October 2024

DTU is also responsible for the coordination of the four HESS demonstration pilots, which besides Risø HPP are SOLITEK’s office building integrating the HESS with PV, geothermal generation and EV charger, IMECAR’s factory environment integrating the HESS with fast EV charger and PV, and MASEN’s virtual multi-microgrid system. Finally, DTU contributes as the other demonstration partners to specifications for the design and assembling of the HESS (WP1, WP2, WP3, WP4 and WP5), and to the assessment of the value of the HESS (WP7, WP8).

The demonstrations of HAVEN HESS in Risø HPP intends to verify and quantify the value of a hybrid power plants with HESS as a renewable, robust and flexible generation technology which can allow higher shares of renewable generation in isolated power systems without compromising the security of supply for the electricity consumers. The idea is that the combination of wind and solar gives a better distribution of the renewable generation over time than only wind or only solar, and the HESS provides short-term power and long-term energy supply, also in periods where the match between renewable generation and the need for electricity is not matching very well.

The key grid services which the Risø HPP including HAVEN HESS will deliver to the isolated power system are a combination of short-term frequency support services and long-term power balancing services. More specifically, the services are:

The technical and economic performance of each key grid service will be evaluated by KPIs which compare performance measures in the demonstration cases with the HESS to the performance without the HESS.

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