During May a total volume of 473,163.1 MWh of electricity was traded on the Croatian energy exchange CROPEX, which is 15.7 % less than in April, of which 436,895.1 MWh on the day-ahead market and 36,268 MWh on the intraday market. Traded volume in May 2021 was 21.2 % lower compared to the same month last year. Average daily base price on day-ahead market in May amounted to 59.9 euros/MWh, which is 7.1 % lower than in the previous month, while average euro-peak price reached 59.09 euros/MWh, 11.2 % lower compared to the previous month. The average price on the intraday market was 60.09 euros/MWh, 5.6 % lower compared to April. There are 23 participants on CROPEX day-ahead market (the same as in the previous month), sixteen of which have been active on the intraday market as well. Average daily traded volume on the day-ahead market in May amounted to 14,093.4 MWh. CROPEX was launched on 11 March 2016 in cooperation with Nord Pool, Europe’s leading electricity exchange, and is co-owned by the Croatian electricity transmission system operator (HOPS) and the Croatian electricity market operator (HROTE). Intraday market was launched in April 2017. On 19 June 2018, after joint project of Croatian and Slovenian transmission system operators and power exchanges, CROPEX day ahead market was successfully coupled with MRC markets through Croatian – Slovenian border.