Map (IMAGE) ETH Zurich Caption The map shows all electricity generation and transmission assets of the Ukrainian electricity system as of February 2022 and military attacks until 6 June 2023. In February 2022, the entire power system of mainland Ukraine comprised over 1,500 generation plants in seven regional power systems totalling 59 GW of generation capacity. 49 percent of the capacity was operated on fossil fuels, i.e. coal and/or gas. 23 percent was covered by nuclear power stations, with the remaining quarter made up of solar energy (13%), hydropower (11%), wind energy (3%), biomass and biogas (<1%). Credit ETH Zurich, ISTP, PLUS / Cell Press Usage Restrictions The rights to the images always remain with the person referred to as the copyright holder for them. Images published on ETH News may be used by other media and online portals only if ETH Zurich is specifically mentioned as the copyright holder and only in connection with the relevant ETH News article. Further distribution of images – for example, via download links – is permitted only with the approval of the editorial team. License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.