From ReNew Canada’s latest Top100 Project List, here are projects 25 to 1.
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25. North Shore Wastewater Treatment Plant Program
The new North Shore Wastewater Treatment Plant will serve over 300,000 residents and businesses in the Districts of North and West Vancouver, the City of North Vancouver, and Sḵwx̱wú7mesh Úxwumixw (Squamish Nation), and səlilwətaɬ (Tsleil-Waututh Nation). It will replace the existing Lions Gate Wastewater Treatment Plant on the North Shore, one of the last plants on the west coast of Canada and the United States to provide only primary level wastewater treatment. Building a new wastewater treatment plant that provides a higher level of treatment is essential to comply with mandatory federal regulations. It will also ensure the treated wastewater released into the marine environment of the Burrard Inlet is much cleaner.
Project Value (CAD): $3,860,000,000
Sector: Water/Wastewater
Location: Disctrict of North Vancouver, B.C.
24. Accelerated High-Speed Internet Program
As part of a nearly $4 billion project to connect every region in Ontario to reliable, high-speed Internet, Infrastructure Ontario led an innovative procurement process that enabled Internet Service Providers (ISPs) to bid for provincial funding through a series of reverse auction events for defined geographic areas and based upon requirements for high-speed internet infrastructure deployment.
Project Value (CAD): $3,900,000,000
Sector: Communications
Location: Ontario
23. Fraser River Tunnel Project
The Fraser River Tunnel Project (FRTP) is a key component of the broader Highway 99 Tunnel. The new crossing will be an eight-lane immersed tube tunnel with three general-purpose lanes and a dedicated transit lane in each direction. The new tunnel will also feature a separate multi-use path to support pedestrians, cyclists and other active transportation options. The project also includes replacing the existing Deas Slough Bridge and Highway 99 upgrades between Westminster Highway in Richmond and Ladner Trunk Road in Delta.
Project Value (CAD): $4,150,000,000
Sector: Highway
Location: Richmond / Delta, B.C.
22. ALTO (Toronto-Québec City High-Speed Rail Network)
With dedicated passenger tracks and peak speeds of up to 300km/h, Alto will significantly reduce travel times — even halve it in some cases — between major cities in the Toronto–Québec City corridor. Through nearly 1,000 kilometres of electrified tracks, the network will help reduce intercity transportation’s carbon footprint while transforming the user experience. As Canada’s largest public infrastructure project, once completed, this initiative will drive the economy and provide an efficient, economic and environmentally friendly transport alternative to air and car travel.
Project Value (CAD): $4,300,000,000
Sector: Rail
Location: Quebec City to Toronto
21. Ottawa LRT – Stage 2
The Stage 2 Light Rail project, when complete, will extend the O-Train system farther south, east, and west, adding approximately 44 kilometres of new rail and 24 new stations. Stage 2 is a package of three extensions—south, east, and west: The O-Train South extension will see rail service continue from Greenboro to Limebank in Riverside South, while adding a link to the Ottawa Macdonald-Cartier International Airport; the O-Train East extension will see LRT continue from Blair to Place d’Orléans Station, and then all the way to Trim Road; and the O-Train West extension will see LRT continue from Tunney’s Pasture to Moodie and Baseline Stations.
Project Value (CAD): $4,675,000,000
Sector: LRT
Location: Ottawa, Ont.
20. Eglinton Crosstown West Extension
The Eglinton Crosstown West Extension is an approximately 9.2-kilometre extension of the Eglinton Crosstown LRT (future Line 5), from Mount Dennis to Renforth Drive. Metrolinx is actively collaborating with the GTAA and municipal partners on the proposed alignment from Renforth Drive to the airport. Tunnelling is one of the rst phases of work for the project. The project is being delivered in four separate contracts: Advance Tunnelling DBF; Second Advance Tunnelling DBF; Elevated Guideway DB; and Stations Rails and Systems DB.
Project Value (CAD): $4,700,000,000
Sector: LRT
Location: Toronto, Ont.
19. Centre Block Rehabilitation Project
The Government of Canada is undertaking a comprehensive rehabilitation of the Parliament buildings in Ottawa, including the rehabilitation of the Centre Block and the construction of Canada’s new Parliament Welcome Centre. The project includes: restoring the building’s stonework, wood, plaster, frescos, stained glass, marble and metalwork; replacing mechanical, electrical and fire safety systems; installing new information technology, multimedia and security systems; upgrading committee rooms to provide additional space as well as modern technology for broadcasting and translation; making the building more environmentally sustainable; building phase 2 of the Parliament Welcome Centre complex; and restoring the Peace Tower.
Project Value (CAD): $5,000,000,000
Sector: Public Spaces
Location: Ottawa, Ont.
18. Scarborough Subway Extension
The Scarborough Subway Extension is a 7.8-kilometre extension of TTC’s Line 2 Bloor-Danforth Subway, from the ex-isting Kennedy Station northeast to McCowan Road/Sheppard Avenue. The line will include three new stations at Lawrence Avenue and McCowan Road, Scarborough Centre and a terminal station at McCowan Road and Sheppard Avenue. The project is being delivered in two large contracts: the Stations, Rail and Systems package and the Advance Tunnel project.
Project Value (CAD): $5,500,000,000
Sector: Subway
Location: Scarborough, Ont.
17. Yonge-North Subway Extension
The Yonge North Subway Extension (YNSE) will extend the TTC’s Line 1 subway service approximately eight kilometres from the existing terminus at Finch Station into the City of Richmond Hill. The project runs through the City of Toronto and York Region, including sections within the City of Vaughan, the City of Markham, and the City of Richmond Hill. It will include an approximately 6.3-kilometre tunnelled segment as well as an above-ground segment that will run along the existing rail corridor in the northern section of the route. Once complete, the YNSE will connect with York Region Transit and GO transit services. In Oct. 2025 Infrastructure Ontario and Metrolinx released a Request for Qualications for the Stations, Rail and Systems (SRS) package.
Project Value (CAD): $5,600,000,000
Sector: Subway
Location: Toronto / York Region, Ont.
16. Hazel McCallion LRT
The Hazel McCallion LRT project includes 18 kilometres of new dedicated rapid transit between Port Credit GO Station in Mississauga to the Gateway Terminal at Steeles Avenue in Brampton, with 19 surface stops and connections to GO Transit’s Milton and Lakeshore West rail lines, Mississauga MiWay, Brampton Transit, and the Mississauga Transitway BRT. In 2024, the Ontario government announced it is moving forward with an expansion of the project that will include a four-kilometre extension of the line into downtown Brampton via Main Street from the Brampton Gateway Terminal and a two-kilometre extension with a loop in Mississauga. The loop will connect LRT service to Square One with additional stops through to Confederation Parkway.
Project Value (CAD): $5,600,000,000
Sector: LRT
Location: Mississauga / Brampton, Ont.
15. Surrey Langley SkyTrain
The first rapid-transit project south of the Fraser in 30 years, the Surrey Langley SkyTrain will allow travel between Langley City Centre and King George SkyTrain station in approximately 22 minutes, and in just 65 minutes between Langley City Centre and Waterfront station in downtown Vancouver. The project is expected to serve a daily weekday ridership of 56,000 in the opening year, increasing to 80,000 by 2050. ion in 2025 was focused on foundations for roughly 200 guideway piers and columns. The pre-cast concrete facility in Surrey’s Campbell Heights was completed, and con-struction of Green Timbers and Langley City Centre stations was started in 2025.
Project Value (CAD): $6,000,000,000
Sector: LRT
Location: Suurey / Langley, B.C.
14. Iona Island Wastewater Treatment Plant Projects
In Oct. 2025, Metro Vancouver’s Board of Directors voted to take a new approach to upgrading the Iona Island Wastewater Treatment Plant. Rather than building an entirely new facility, Metro Vancouver will rehabilitate the existing primary treatment plant and deliver phased upgrades to achieve compliance for secondary wastewater treatment. This approach is possible in part thanks to more space-efficient wastewater treatment technology. The Iona Island Wastewater Treatment Plant Projects plan has been updated to encompass a smaller scope of work, with a new cost estimate of $6 billion, compared to the previous $9.9-billion plan approved by the Board in 2022.
Project Value (CAD): $6,000,000,000
Sector: Water/Wastewater
Location: Richmond, B.C.
13. Calgary Green Line LRT
The SE Segment is Phase 1 of the Green Line Light Rail Transit project, the City of Calgary’s largest-ever infrastructure investment. The SE Segment, from Shepard in the southeast to the Event Centre/Grand Central Station in the Beltline, will build the first 16 kilometres of an overall 46-kilometre vision, before connecting with the future Downtown Segment and into the existing Red and Blue LRT Lines. Including the Downtown Segment, Phase 1 will build, 17.2 kilometres of twin-track LRT infrastructure, 12 new stations, a maintenance and storage facility, three Park and Ride lots, and 28 new modern low-floor light rail vehicles.
Project Value (CAD): $6,250,000,000
Sector: LRT
Location: Calgary, Alta.
12. TTC Vehicles Program
The Toronto Transit Commission is upgrading its fleet, including 264 new streetcars ($1.613 billion), new Wheel-Trans vehicles ($363 million) as well as hybrid and electric buses ($4.413 billion). An electrification program ($766 million) covers the electrification infrastructure to support the charging of electric buses according to the Green Bus Technology Plan approved by the TTC Board. In 2022 the program aimed to complete design for Eglinton, Wilson and Malvern garages and phase two construction at Wilson and Birchmount garages. By 2024, the TTC will complete installation of 60 e-chargers at three TTC garages (Arrow Road, Mt. Dennis and Eglinton) and plans electrification of the entire fleet by 2036. For the electric and hybrid bus projects, the TTC aims to deliver the pilot vehicle for the next round of procurement and start full production delivery in 2022. The Wheel-Trans project plans to deliver 109 seven-metre Wheel-Trans buses in 2022, as well as start design and award the contract for the next round of six-metre buses.
Project Value (CAD): $7,200,000,000
Sector: BRT
Location: Toronto, Ont.
11. QEII Halifax Infirmary Expansion Project
The Halifax Infirmary Expansion Project is a QEII Renew partnership between the Government of Nova Scotia, Nova Scotia Health and Build Nova Scotia. This project will deliver a modern acute care tower with 216 beds, 16 operating rooms, an intensive care unit, and a larger emergency department. QEII Renew will enhance access to care, replace aging infrastructure, and support clinical excellence for future generations of Nova Scotians. Completion of the acute care tower will enable services to be relocated from aging facilities, including the Victoria and Centennial Buildings at the QEII Victoria General campus, to a modern, new building and ren-ovated program spaces. Excavation for the QEII Halifax Infirmary acute care tower was completed in September 2025.
Project Value (CAD): $7,400,000,000
Sector: Healthcare
Location: Halifax, NS
10. Montreal Metro Blue Line Extension
The Blue Line Extension project will add approximately six kilometres of track and five new stations to the current 12-station Blue Line, one of four Metro lines that runs through the Greater Montreal Area. The extension will run along Jean-Talon Street, ending east of Highway 25. The tunnel boring machine (TBM) ar-rived in October 2025. Custom-built in Germany for the Montreal Metro, the drilling machine, with a diameter of 9.7 meters, will be used to excavate and concrete 4.6 kilometers of tunnel to Anjou. The TBM’s assembly will take place over several months, with commissioning scheduled for spring 2026.
Project Value (CAD): $7,600,000,000
Sector: Subway
Location: Montreal, Que.
9. Réseau express métropolitain (REM)
The Réseau express metropolitain (REM) will be a new integrated network linking downtown Montreal, South Shore, West Island, North Shore, and the airport. Once completed, the 67-km line will be one of the longest automated metro lines in the world. The REM opened its first segment on July 31, 2023, with five new stations spread over 17 kilometres. The Deux-Montagnes branch welcomed its first riders on Nov. 17, 2025. Commercial service between the South Shore and the North Shore REM now has 14 new stations and 50 kilometres of network in service, tripling its coverage and quadrupling the number of stations in operation.
Project Value (CAD): $9,400,000,000
Sector: LRT
Location: Montreal, Que.
8. GO Expansion Projects — Early Works
The Early Works portion of the GO Expansion project is one of three blocks of works to be done to accommodate two-way, all-day transit throughout the GTHA corridor. There are over 50 individual projects included in the early works program, including 40 smaller projects delivered as Design-Build or Design-Bid-Build, along with 12 larger projects delivered as Build-Finance and Design-Build-Finance. The latter includes the Davenport Diamond Rail Grade Separation Project, for which the winning bidder was selected in July 2019, and the Highway 401 Rail Tunnel, which began construction in March 2019, and the Stouffville Corridor Stations Improvement project. The program also includes the Union Station Enhancement project, which will see construction of a new South Concourse, track expansion east of the station and replacement of the 90-year-old signalling system with new state-of-the-art signals, communications, power supply, CCTV, and SCADA systems.
Project Value (CAD): $10,500,000,000
Sector: Rail
Location: Greater Toronto and Hamilton Area
7. Ontario Line
The Ontario Line is a 15.6-kilometre stand-alone rapid transit line in Toronto that will connect the Flemingdon Park neighbourhood to Exhibition/Ontario Place. Over half of the route is planned to run underground through new tunnels, with the remainder running along elevated and at-grade rail corridor sections of track. Fifteen stations are proposed, with numerous connections to the broader transit network, including GO Transit rail services, the Toronto Transit Commission’s subway Lines 1 and 2, and the future Line 5 (Eglinton Crosstown LRT).
Project Value (CAD): $11,000,000,000
Sector: Subway
Location: Toronto, Ont.
6. Darlington Nuclear Refurbishment
The Darlington Nuclear Refurbishment Project was managed in three distinct phases: Initiation Phase (2007–2009); Definition Phase (2010-2015); and Execution Phase (2016-2026). In November 2024, OPG announced the completion of the refurbishment of Unit 1 five months ahead of schedule. The refurbishment of Unit 1 involved the successful removal and replacement of major components of the reactor and its associated equipment including pressure tubes, calandria tubes and feeder pipes, as well as inspection and upgrades of the turbine generator equipment. Unit 1 is the third of four units that have been successfully refurbished to date, with the overall project tracking on-time and on-budget. Unit 4 is tracking to be completed by 2026.
Project Value (CAD): $12,800,000,000
Sector: Nuclear
Location: Clarington, Ont.
5. Bruce Power Refurbishment
In 2015, Bruce Power reached an agreement with the Independent Electricity System Operator (IESO) to advance a long-term investment program to extend the life of its nuclear feet and secure the site’s operation until 2064. The Life-Extension Program started on January 1, 2016, and began with the replacement of older systems during regularly scheduled maintenance outages. As part of the Life-Extension Program, Bruce Power is carrying out an intensive Major Component Replacement (MCR) Project, which began in January 2020 and focuses on the replacement of key reactor components in Units 3-8, including steam generators, pressure tubes, calandria tubes, and feeder tubes. In Sept. 2025, the Unit 4 MCR progressed to its removal and replacement series following a strong lead-in after the unit was taken off-line in February to begin its three-year refurbishment.
Project Value (CAD): $13,000,000,000
Sector: Nuclear
Location: Tiverton, Ont.
4. Peter Gilgan Mississauga Hospital
The new Peter Gilgan Mississauga Hospital and the Shah Family Hospital for Women and Children will fully replace the existing Mississauga Hospital. Features include: 22 storeys and approximately 2.8 million square feet; over 950 beds; the number of operating rooms will increase to 23, up from 14 today; 100 per cent of patient rooms will be private rooms; a new and expanded Emergency Department; and advanced diagnostic imaging facilities and a new pharmacy and clinical laboratory.
Project Value (CAD): $14,000,000,000
Sector: Healthcare
Location: Mississauga, Ont.
3. GO Expansion – On-Corridor Works
As On-Corridor Works is a complex regional project with multiple external interfaces, stakeholders, utility and operational elements, it is being delivered as a Progressive DBOM (design-build-operate-maintain) model. In a Progressive model, the project features a collaborative approach between the project owner and the contracting partner. In the Spring of 2022, Metrolinx and Infrastructure Ontario (IO) executed an agreement with ONxpress Transportation Partners to enter the Development Phase of the On-Corridor Works project—the largest project in Metrolinx’s GO Rail Expansion program. Unprecedented in its scale and complexity, this multi-billion-dollar capital program will transform the regional rail network with electrification, more frequent service, shorter journey times and a more modernized system for the Greater Toronto and Hamilton Region.
Project Value (CAD): $15,700,000,000
Sector: Rail
Location: Ontario
2. Darlington New Nuclear Project
The Darlington New Nuclear Project will see the construction of four small modular reactors (SMRs), that will produce 1,200 megawatts (MW) of electricity. The Darlington SMR will be a GE Hitachi BWRX-300 reactor. All site grading for future units is now complete, along with the first phase of geotechnical investigations. Excavation work on the first unit’s reactor building shaft has reached 80 per cent completion. Fabrication of basemat modules—which will serve as the foundation of the first unit’s reactor building—continues to progress with completed modules being assembled in the pre-assembly building. Once the reactor building shaft is wholly excavated, the fully assembled basemat will be lifted by heavy crane and placed at the bottom of the shaft in early 2026.
Project Value (CAD): $20,900,000,000
Sector:ܳ
Location: Bowmanville, Ont.
1. Pickering Generating Station Refurbishment
The refurbishment of Pickering Nuclear Generating Station’s CANDU “B” units (units 5-8) will produce a total of 2,000 megawatts (MW) of electricity, equivalent to powering two million homes. OPG will begin the Project Execution Phase to refurbish Pickering “B” units 5 to 8 in early 2027, with completion expected by the mid-2030s. In January 2025, the government approved OPG to proceed with the Project Definition Phase of the Pickering refurbishment that will continue through 2026. Under this phase, OPG undertook activities to rene project scope and cost, complete engineering deliverables, negotiate commercial contracts and secure spots in the queue for long-lead components.
Project Value (CAD): $26,800,000,000
Sector: Nuclear
Location: Pickering, Ont.
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