FANTANELE-BELIS DAM was built in the years 1970-1974 on the Somesul Cald river for generating electricity.
The lake, situated at an altitude of 990m has an area of 9.8 square km and a length of 13 km. On the lake shore was built the resort with the same name, while old Belis village, covered by the waters, was displaced on the surrounding peaks.
The dam made from rocks with cocret mask, is 92 m high and 410 m long. The water is transported through underground pipes, dug into the rock to underground Mariselu hydroelectric plant, where they meet another eight secondary catchments from Somesul rece and Iara valley.
Through an underground channel, carved in rock, water reaches the turbines. Here, the cavity that houses the power plant is as tall as a building with 10 floors. Power plant, built by Ceausescu regime, is housed in an artificial cave, carved in the rock in the heart of the mountains. Because it can withstand even the most brutal aerial bombardment, Marisel plant was declared a strategic objective and public access is prohibited. Gate, which resembles in appearance to a mine entrance, is large enough to allow the entry of a smaller truck, but discreet enough not to attract attention of tourists who go to the resort Marisel.
It is important, at least, for two reasons:
- it produces an enormous amount of clean energy, and secondly for
- the plant was designed and built exclusively by Romanian engineers and workers and there were used only materials and equipment produced in Romania.
The hydropower plant from Marisel is the second largest of the interior rivers of Romania (after that of Lotru) and has an output of 220 megawatts, enough to supply at the same time, 10 mixed metals works, such as the one in Campia Turzii, or may illuminate without problems all the cities in North Transylvania.