Niagara tunnel project reaches milestone

摘要

Construction of the Niagara Tunnel Project reached a significant milestone in January 2012, at which time half of the tunnel was fully lined with concrete, Ontario Power Generation announces. When complete, the tunnel will allow waters from the Niagara River to flow 10.2 km to the 2,000-MW Sir Adam Beck hydro facility, increasing its output by about 1,600 GWh. The tunnel is as tall as a four-story building and will propel water at a rate of 500 cubic meters I per second.