HPP Gradec
HPP “Gradec” is predicted to be constructed in the bed of river Vardar, downstream of Udiovo village (30.4 km from the Macedonia-Greek border) in order to be used energy potential of Vardar river at location of Udovo village to Demir Kapija with one additional energy level.
Regarding adopted disposition of HPP “Gradec” overflow gravity dam and powerhouse building are situated nearby in middle of Vardar River valley and sideways towards banks are planned concrete gravity parts of dam. This solution is adopted due to the fact that enables construction of overflow gravity dam and powerhouse building in I phase almost in dry and fastest start at the beginning of construction simultaneously with preparation of sheet piling from I phase and simultaneously with dislocation of railway at that crossroad.
Main characteristics of HPP „Gradec“
Dam height | 33,00 m |
Length of dam crest | 520,00 m |
Width of dam crest | 10,00 m |
Useful storage volume | 43,00 x 106 m3 |
Installed flow | 240,00 m3/s |
Net fall | 27,15 m |
Turbine type | Каплан |
Number of units | 2 |
Installed capacity per unit | 28,80 MW |
Calculated installed capacity | 55,20 MW |
Average annual flow of site | 141,20 m3/s |
Average annual generation | 243 GWh |
Construction period | 6 years |
Dislocation of railway | 22 km |
Total cost of project | 174,5 million Euros |