Headrace gallery worth EUR 150 million launched


September 9, 2015





September 9, 2015




Hidroelectrica said it inaugurated Surduc–Nehoiașu, its latest headrace gallery, at the Pruncea intake point at Bâsca Mare, following a EUR 150 million investment. The tunnel is part of the Surduc–Siriu hydropower planning, the Romania Journal reported on its website.

The project is the longest of its kind to be implemented since 1984, being also the government-controlled company’s biggest investment after 1990. It leads water to from the Surduc accumulation to hydroelectric plant Nehoiașu. It takes in various tributaries and it will mean another 171.8 GWh of power a year, said Remus Borza, the unsolvent company’s administrator.

He explained that the water goes from a reservoir of 282,000 cubic metres to a location of a future 55 MW aggregate, scheduled to launch in 2017. Two more generators of 21 MW each will be added subsequently, Borza said, according to a report by Agerpres.

The tunnel has a length of 16.6 kilometres, a flow of 40 square metres per second and an inner diameter of four meters, with a 30-35 centimetres thick concrete lining. Construction was organized at eight points at Bâsca Mare, Titilau, Pruncea, Trestia and Castel. Surduc–Siriu hydropower project is carried out in the counties of Buzău, Vrancea, Covasna, and on Buzău, Bâsca Mare, Bâsca Mică and Zabala rivers and was started in 1981.

The underground gallery’s last section of Trestia–Castel is still being dug, with the aim to cover the entire length of 16.6 kilometres through the mountain range of Buzău. The gallery, longest one to be dug for energy purposes at its 2,540 metres, will have the highest waterfall level among Hidroelectrica’s investments – 490 metres. It will ensure Nehoiașu plant the highest energy production capacity in the company’s portfolio.

The hydropower plant’s generator has installed power of 55 MW and an estimated electricity production capacity of 171.8 GWh during an average hydrological year. Nehoiașu 1 has been operational since 1988 as part of the Surduc–Siriu hydro project, having two generators with a total installed capacity of 42 MW and an average production of 120.6 GWh per year.

The hydropower investment in Siriu-Surduc is part of the company’s investment plan for 2015-2020, Hidroelectrica having a budget of over EUR 1.3 billion allocated for refurbishment, maintenance and development works.

Related Articles


Fossil fuels returned as top energy source in EU power generation in 2021

01 July 2022 - Among renewable sources, the biggest increase in 2021 was seen in electricity produced from solar energy, 13%,

Floating wind farm project unites fishermen, investors in Ireland

01 July 2022 - A joint 2 GW floating wind farm project is the first cooperation in the world between the two opposing sectors.

Voltalia breaks ground Albania biggest solar park Western Balkans Karavasta

Voltalia breaks ground in Albania for biggest solar park in Western Balkans

01 July 2022 - The site for the Karavasta solar park spans 196 hectares in Fier county in Albania's west. The planned capacity is 140 MW.


Serbia’s power utility EPS posts Q1 net loss of EUR 254 million

30 June 2022 - The state-owned power utility is blaming the poor result on a drop in output, electricity imports, and capped prices for end-consumers