... the idea of the Boyana hydroelectric power station, and hour by hour their activity remains recorded and preserved in the workbooks with slightly faded ink.
The Boyana - Новини
Boyana HPP is not only the oldest fully functioning asset
...... its installed capacity is 1.24 MW. Its average annual production amounts to 1.8 GWh. This is the oldest hydroelectric power plant in the NEC system.