The rock slide damaged a 300m section of the plant’s 5km penstock. The company completed repairs in third week of September 2013.
Besides, several site improvements including protective berms are also nearing completion and will significantly reduce chances of future damage or interruption.
The plant is part of the Alterra Power’s 235MW Toba Montrose hydro facility, co-owned with Fiera Axium Western Energy.
Alterra Power’s hydro power vice president Jay Sutton said that the company is pleased to have this facility fully back on line.
"I credit our team and contractors for completing the project in an efficient and, most importantly, safe manner," Sutton added.