Energinet.dk has collaborated with other European transmission system operators (TSOs) on the European Wind Integration Study (EWIS) to ensure that the European transmission grids are up to the challenge. The findings and recommendations of the study were presented recently.
Over the last three years, EWIS has examined the challenges of integrating large amounts of wind energy into the European power system. The study focused on how transmission grids can facilitate the integration of wind energy into the European electricity markets, even out varying wind power resources across Europe and enable the sharing of backup facilities. This is the first time that collaboration cutting across borders and technical issues has taken place on this scale.
- Wind power requires dialogue, points out system analyst Antje Orths, who has participated in EWIS on behalf of Energinet.dk. – For instance, we have to know what will happen to the power system and the wind turbines in Denmark if there is a power failure either here or in Germany. Are there risks we need to address, and how much will it cost? And why shouldn't we share our backup facilities to the benefit of consumers and the environment? How can the market contribute, and how can we plan the power system and its operation optimally? There are many questions which we can only answer together, and we have come a long way with the EWIS project, says Antje Orths.
The findings are presented in a final report that describes how the need for grid strengthening can best be identified, how the existing capacity can be used most efficiently, and why the implementation of already planned grid expansions is urgent. The report also outlines the most economically feasible initiatives for further strengthening. Most of the recommendations, but also new questions, end up on the many desks of the new European organisation for TSOs, ENTSO-E, where they will be followed up.
EWIS has received EU funding, and the study was prepared in collaboration between 80 experts from 15 European TSOs. The final report was presented in Brussels on 13 April 2010 with representatives of the European Commission, regulators, stakeholders and ENTSO-E in attendance. The study was highly commended because its findings match those of other players’ studies (eg EWEA) while building on the core expertise of the grid operators. As a positive side effect, the TSOs have learned much from and about each other.
The final report, appendices and a separate executive summary can be downloaded below.