The day in 3 news: Hydropower plants fitted with energy storage systems; Lukoil’s Bulgarian assets up for sale; Zero ...
NEK betting big on energy storage Four reservoirs under Bulgaria's National Electric Company (NEK) - Topolnitsa, Aleko, "Devin," and Studen Kladenets - will be equipped with energy storage systems. NEK has announced a tender worth 123.6 …