|Generation Type:||Run of River Hydro|
|Project Names:||Rott, Zagra|
|Installed Capacity:||2.5 MW|
|Eu Subsidy Until:||2028|
|Avg Annual Power Generation:||10,500 MWh|
Supplying clean energy to an average of 4,200 households annually. 1
Purchased on a fully commissioned and operational basis in 2014, the Rott project is a cascade of two run-of-river generating plants located on the Little Cugir River, approximately 58 km west of Sibiu in the Şureanu Mountains of Romania’s Parâng Range in the Southern Carpathians. The project develops the hydraulic potential of the Little River (Raul Mic). Rott is subject to long-term offtake agreements for all its energy production and Green Certificates earned until 2028.
The Zagra plants are located in the Rodna Mountains on the Zagra River consists of two intakes and two powerhouses. The Zagra River flows south from Rodna Mountains until its confluence with the Somesul Mare River. Zagra was purchased in 2014 after initially being commissioned by the turbine manufacturer, but before the control system was fine-tuned, the turbines were calibrated and testing with the grid operator was completed. As a result, the Trust completed various steps and capital improvements to put the project in operation in the second quarter of 2014. Rott is subject to long-term offtake agreements for all its energy production and Green Certificates earned until 2028.
The plant consists of two intakes and two powerhouses. The upper generating plant, Zagra 1, is a 450 kW run-of-river plant with a concrete diversion weir and intake, a 3.03 km buried glass-reinforced plastic penstock and a concrete powerhouse with a 4-jet vertical axis Pelton turbine. The second generating plant, Zagra 2 is a 310 kW plant that draws flow from a second intake located downstream of Zagra 1, has a 2.38 km buried penstock, a concrete powerhouse with a 4-jet vertical axis Pelton turbine.
The combined installed capacity of the two plants is 1.43 MW. The Zagra hydroelectric plants have access to a watershed area of 27.5 km2. The total power generated by these plants is estimated to be 2,100 MWh per year. The Zagra Project is expected to receive 2.3 GCs per MWh supplied into the grid until 2028.