The Otto Holden is hydroelectric station located on the Ottawa River, near Mattawa, Ontario. Over the past few decades, there have been relative horizontal and vertical movement of the embedded unit components. The movement has been attributed to alkali-aggregate reactions (ARR) in the concrete and is expected to continue.

The team is providing general contracting services in a multi-party agreement as part of this industrial integrated delivery project. The scope includes various mechanical, electrical, and civil/architectural works such as the overhaul and rehabilitation of all units, as well as turbine runner replacement and repairs. We will also be installing a new governor oil filtration system, rehabilitating the rotor rim and replacing the existing surface cooler and valve pressure controls.