Enwave Energy Corporation

District Energy System Cogeneration Plant

District energy is a key component of Toronto’s climate action plan, to reduce emissions from buildings and help the City reach its greenhouse gas (GHG) reduction target of 80% by 2050. Buildings currently generate about half of the GHG emissions in Toronto. 

Enwave is the largest District Energy Systems in North America. The system has enough power to supply over 180 office buildings.

This project started in 1962 with an original feasibility study and culminated in the design and construction of a central plant and distribution system with an installed capacity of 800,000 lbs. of steam per hour.

The deep lake cooling system was added later, and makes use of the 40°F/4°C water in Lake Ontario. It has a total capacity of 75,000 tons of refrigeration, which is sufficient to air condition 3.2 million m2 / ~34 million ft2 offices.

Clients with whom we have worked on the Enwave District Energy System include:

  • Hudson Bay Company
  • Bank of Nova Scotia
  • Cadillac Fairview Toronto Dominion Tower Plaza
  • Royal Bank Plaza
  • Mt. Sinai Hospital
  • Toronto General Hospital
  • Women’s College Hospital
  • The Hospital for Sick Children
  • Li Ka Shing Knowledge Institute
  • St. Michael’s Hospital

Prime Consultans 
| Project Mangeres | Electrical Engineers | Mechanical Engineers 

Status: Complete 2019

Toronto, Ontario

Provided technical advisory for heating and colling systems | Introduced over 5 miles of piping for high-pressure steam district heating | The deep lake cooling system makes use of 40°F/4°C water in Lake Ontario


Supplying miles of steam

The system supplies high-pressure steam for district heating via an underground distribution system of over five miles of piping in downtown Toronto.

Trusted advisor

HH Angus has served as a technical advisor to Enwave over many years, consulting on various engineering aspects of the heating and cooling systems.