Enwave Commissions Expansion of World-Renowned Deep Lake Water Cooling System, Internationally Recognized by the United Nations, in Partnership with Toronto Water

August 29, 2024

TORONTO, Aug. 29, 2024 (GLOBE NEWSWIRE) -- Enwave Energy Corporation (Enwave) commissioned the Deep Lake Water Cooling (DLWC) System’s fourth intake expansion during a ceremony at their John Street Energy Centre today. Enwave, in partnership with Toronto Water, is proud to provide more buildings, owners, and operators in the city the opportunity to connect to Enwave’s sustainable energy system.

Enwave began construction on its expansion of the DLWC System in 2021, which has been in existence for twenty years. The project includes a three-kilometre pipe into Lake Ontario, which draws in water at four-degree Celsius temperatures and transports it to Enwave’s John Street Energy Centre through a newly built tunnel that extends under the harbour. The expansion has effectively increased its cooling capacity by 60 per cent, with the capability of providing service to an additional 40 buildings.

Servicing more than 100 buildings in downtown Toronto, DLWC is the world’s largest system of its kind, providing cooling to hospitals, commercial buildings, residential buildings, data centres, and entertainment venues. With the expansion, Enwave’s DLWC System is estimated to save 220 million gallons (832 million litres) of water annually -- equivalent to nearly 350 Olympic size swimming pools -- and avoids over 60 megawatts of peak electrical demand from Ontario’s grid.

By integrating with this system, participants actively contribute to the energy transition and decarbonization efforts, while benefiting from an essential service. The United Nations under its United 4 Sustainable Smart Cities (U4SSC) initiative published a case study of Enwave’s progressive DLWC System in A Guide to Circular Cities, citing the system’s accomplishment in achieving its objective to transform the way in which buildings are cooled to reduce environmental impact while providing value to the city and fostering economic development. This initiative significantly benefits the communities it services through reducing water consumption and operating costs, providing more predictable energy costs, and improving overall building resilience.

The DLWC System has been harnessed to create Enwave’s Green Heat program – a milestone expansion and renewal of facilities which enables Enwave to provide low-carbon heat to the world-renowned district energy grid servicing the city of Toronto’s downtown core. The Green Heat program allowed the Fairmont Royal York, a nearly 100-year-old historic building, to achieve net zero certification from the Canada Green Building Council (CaGBC).

Leveraging Toronto Water’s utility system, this innovative partnership has become an integral part of TransformTO, the city’s Climate Action Strategy, aiming to reduce greenhouse gas (GHG) emissions by 65% by 2030. This advancement actively mitigates climate change and supports Toronto developers in reaching their GHG reduction goals, while providing a cost-effective means to achieving compliance with the Toronto Green Standard.

“The expansion of our DLWC System is a significant milestone for both us and the city of Toronto,” says Carlyle Coutinho, CEO of Enwave Energy Corporation. “This unique partnership directly supports Toronto’s ambitious strategy to reduce GHG emissions overall and achieve net-zero emissions by 2040. We are proud to provide a system that contributes to these efforts in a meaningful way, while offering communities a viable path forward to reduce emissions, consumption and costs.”

“By expanding the Deep Lake Water Cooling System, Enwave is serving more people and cooling more buildings - while reducing emissions and helping us reach our climate goals,” says Toronto Mayor, Olivia Chow. “The City is grateful for Enwave’s continued partnership in providing this innovative, sustainable and climate-friendly cooling technology for people in Toronto. We look forward to the continued success and growth of the Deep Lake Water Cooling System.”

Left-right: Olivia Chow (Toronto Mayor), William Fernandes (Acting Deputy General Manager, Toronto Water), Lou Di Gironimo (General Manager, Toronto Water), Hon. Sam Oosterhoff (Associate Minister, Energy-Intensive Industries) and Carlyle Coutinho (CEO, Enwave Energy Corporation).

Understanding the enormous potential of this system, Enwave utilizes it uniquely to enhance other assets and services within its reach. In 2020, Enwave installed an 8.5 million-litre temperature-controlled tank underneath the lowest parking level of a three million square feet mixed use development named The Well. The innovative tank utilizes a thermal battery fed by the DLWC System, storing energy at night during off-peak times, and discharging during peak times, easing strain on the electricity grid and reducing overall costs.

“The expansion of the Deep Lake Water Cooling System is a significant achievement that reduces emissions while supporting economic growth with one of the cleanest grids in the world,” says Stephen Lecce, Ontario’s Minister of Energy and Electrification. “Ontario is forecasted to need to double the grid by 2050, so it is critical that we both conserve and generate additional clean, reliable and affordable energy for families and businesses.”

“In every corner of the province, innovative projects and technologies are being deployed to meet the energy needs of growing communities. This project by Enwave is a great example of innovation that will help reduce emissions while powering buildings and growing our economy. A big congratulations goes to all those who helped to make it a reality,” says Hon. Sam Oosterhoff, Associate Minister of Energy-Intensive Industries.

The DLWC System expansion project is supported financially by a grant from Canada’s Low Carbon Economy Fund, Champions Stream and a $600 million loan commitment supporting projects across Enwave’s portfolio, including the DLWC System, from the Canada Infrastructure Bank (CIB) to accelerate the system’s expansion and scale.

The ceremony announcing the commissioning of the fourth intake expansion of Enwave’s Deep Lake Water Cooling System took place on August 29, 2024. The expansion is anticipated to be completed and in service this summer.

For more information, interviews or high-res images please contact:

Katie Good, GoodPR
katie@goodpr.ca

(416) 540-2195

Media Contact

Amy Jacobs

SVP, Commercial Operations

Recent Posts

January 30, 2026
Our very own Carlyle Coutinho, CEO of Enwave Energy Corporation, was featured on Pitching Progress, a global podcast series highlighting leaders who are shaping the future of business and infrastructure. In this episode, the conversation explored Canada’s renewed presence on the world stage—a country driven by inspiring leadership, open for investment, and eager to partner in building a more sustainable future. Against that backdrop, Enwave was recognized as a true Canadian jewel. Carlyle shared how Enwave’s innovative district energy system is already delivering real‑world climate solutions at scale—most notably through Deep Lake Water Cooling, which draws cold water from Lake Ontario to heat and cool Toronto’s downtown core. This breakthrough approach isn’t theory or future aspiration—it’s operational, proven, and powering a major global city today. What resonated most in the discussion was Enwave’s ambition and readiness for growth. Our model is scalable, exportable, and uniquely positioned to expand into dense urban centres across global markets—an energy platform designed for climate impact, resilience, and long‑term value. The episode underscored what we at Enwave already know: Companies like ours—innovative, pragmatic, and climate‑focused—are exactly the type of platforms global investors are looking to support. We’re incredibly proud to see Carlyle’s leadership and Enwave’s work recognized on an international stage. This spotlight reflects the dedication and ingenuity of our entire team. 🎧 Catch the full conversation here: Spotify: https://lnkd.in/d3D52P9p Apple: https://lnkd.in/dVQvs438
Enwave Breaks Ground on New Energy-from-Waste District Energy Heating Facility article
September 10, 2025
TORONTO, Sept. 10, 2025 (GLOBE NEWSWIRE) -- Enwave Energy Corporation (Enwave) celebrated the groundbreaking of a new waste processing facility in Prince Edward Island today at PEI Energy Systems in Charlottetown.
Enwave Green Heat™ Plant Commissioned at Pearl Street Energy Centre article
September 3, 2025
TORONTO, Sept. 03, 2025 (GLOBE NEWSWIRE) -- Enwave Energy Corporation (Enwave) commissioned its new Enwave Green Heat™ Plant during a ceremony at the Pearl Street Energy Centre in Toronto today.
Enwave Announces Expansion of Energy from Waste District Heating Facility
May 12, 2025
TORONTO, May 12, 2025 (GLOBE NEWSWIRE) -- Enwave Energy Corporation (Enwave) has announced today the commitment to build a new waste processing facility in Prince Edward Island, beginning this fall. The facility will be in operation by 2028 and will replace the existing end-of-life system. Enwave, in partnership with the Province of Prince Edward Island, has proudly undertaken this expansion to address the growing need to identify sustainable waste solutions in the province.
Mississauga, Region of Peel, Enwave and Lakeview Village break ground on energy project article
October 21, 2024
MISSISSAUGA, Ontario, Oct. 21, 2024 (GLOBE NEWSWIRE) -- Today, the City of Mississauga , Lakeview Community Partners Limited (LCPL), Enwave Lakeview Corporation and the Region of Peel celebrated the groundbreaking of a new district energy system at Lakeview Village. Once fully operational, the Lakeview Village district energy system is positioned to be the first of its kind in Ontario and the largest in Canada.
Insights & Aspirations from Enwave at the IDEA2024 article
June 16, 2024
Our team at Enwave believes in the importance of bringing people and organizations together to develop partnerships that can drive positive impact on the world. Each year, we attend the International District Energy Association (IDEA) conference, which brings together industry leaders in the energy transition to share, learn, and collaborate together. This conference presents an opportunity for Enwave to learn about innovative low carbon technologies being deployed across the world, how we might be able to apply new models in deploying low carbon energy systems, but also gives Enwave an opportunity to share learnings from our projects and our vision for the future. 
OLG SELLS ENERGY ASSETS IN WINDSOR TO ENWAVE article
November 14, 2023
Toronto, ON – Ontario Lottery and Gaming Corporation (OLG) today announced it has finalized an agreement with Enwave Windsor Holdings Limited Partnership (Enwave) to provide long-term energy reliability for the Windsor casino.
Enwave breaks ground on a new low-carbon heating facility article
May 9, 2023
TORONTO, May 09, 2023 (GLOBE NEWSWIRE) -- Enwave Energy Corporation (Enwave) broke ground for their new low-carbon heating facility at their Pearl Street Energy Centre in downtown Toronto. This groundbreaking marked the beginning of a milestone expansion and renewal of their facilities which will enable Enwave to provide low-carbon heat (Enwave ‘Green Heat’) to Toronto’s world-renowned district energy grid.
Show More