Russia-backed militants have been trying to cut the residents of Luhansk region from electricity supplies; they must have targeted the local thermal power station in Schastya, which is the only source of electric power generation in this area. Yuriy Klymenko, the deputy governor of Luhansk region posted this on Facebook.
Russia's War Against Ukraine
112.ua: Russian militants try cutting Luhansk region residents off the grid
Worker repair high voltage electricity lines in Vuhlehirsk, south east of Debaltseve on March 11, 2016.