Service: Electrical Engineering
Children's Hospital of Eastern Ontario (CHEO)
Parking Garage
HH Angus is part of the EllisDon Infrastructure team awarded the Design-Build-Finance (DBF) contract for the new CHEO Integrated Treatment Centre (also known as 1Door4Care).
As part of this redevelopment, HH Angus provided mechanical and electrical engineering and fire protection design services for the design of a new 7-storey, 1,050 space parking garage for the hospital which addresses current demand challenges while supporting future growth of the healthcare campus. The new parking garage includes 94 accessible parking spaces and 21 electric vehicle (EV) charging stations.
HH Angus is also providing mechanical engineering services for the design of the new 6-storey, 233,000 ft2 CHEO Integrated Treatment Centre with anticipated completion in Fall 2027.
SERVICES
Mechanical Engineering | Electrical Engineering | Fire Protection Design
PROJECT FEATURES
Size: 7 storeys, 1050 space parking garage | Status: Completed 2025
LOCATION
Ottawa, Ontario
Canadian Forces Base (CFB) Kingston
Global Adjustment Mitigation & Resiliency Project
The changes resulting from the Global Adjustment mitigation and resiliency project will create additional capacity to support the decarbonization of heating systems, enable electric vehicle charging, and accommodate future growth across the Base.
Delivering multi-phase infrastructure at CFB Kingston required an integrated, adaptive approach to manage evolving scope and interconnected systems. HH Angus executed several related projects:
- Phase 1 – Royal Military College: 3MW Global Adjustment (GA) mitigation generators, with installation in 2025 and completion in 2026
- Phase 2 – McNaughton Barracks: Solar and Battery Energy Storage System (BESS) for power offset and GA reduction; new service entrance switchgear for 2025, with completion in 2026
- Phase 3 – Vimy Barracks: BESS for GA mitigation scheduled for completion in 2026
Under Johnson Control’s Energy Performance Contract, HH Angus was engaged to enhance resiliency and deliver GA savings, beginning with a feasibility study to define optimal solutions. At McNaughton, obsolete switchgear and deteriorated medium-voltage feeders were replaced, along with new solar and BESS systems to reduce peak demand. At Vimy, BESS provides additional demand mitigation.
As scope expanded, HH Angus added replacement of the adjacent Royal Military College’s main 44kV transformers—one having failed—and recommended a second 44kV transformer at Vimy to improve reliability, as prior inter-ties to McNaughton and Utilities Kingston were no longer available.
SERVICES
Prime Consultant | Electrical Engineering
PROJECT FEATURES
New system provides increased capacity for future growth | Decarbonization of heating, and electric vehicle charging | Feasibility Study | Condition Assessment | Ongoing
LOCATION
Kingston, Ontario
KEY SCOPE ELEMENTS
Global Adjustment mitigation systems | Electrical infrastructure upgrades | Transformer replacement and upgrades | Energy performance and demand reduction | Feasibility and solution development | Phased delivery across multiple facilities
Canadian Forces Base (CFB) Petawawa
Global Adjustment
The work integrated new controls, emissions systems, and utility coordination, all while maintaining continuous facility operations through careful planning and temporary power solutions.
HH Angus was engaged to retrofit an existing 1800 kW diesel generator and add a new 1250 kW unit for parallel grid operation with remote dispatch and Urea emissions after-treatment. Grid controls included anti-islanding protection, SCADA integration, and transfer trip functionality. The new generator required replacement of the local 1500 kVA transformer. Maintaining uninterrupted facility operations was a key challenge, as the existing generator supported life-safety systems.
HH Angus coordinated carefully, deploying rental generators and using fast change-out methods such as single-bolt bus duct to minimize shutdowns.
Although budget constraints were a factor, a broader financial review justified the higher capital investment based on stronger long-term payback. Collaboration with the local utility further streamlined the schedule: protection systems were installed once, in coordination with the utility’s concurrent substation upgrade, eliminating redundant work.
SERVICES
Prime Consultant | Mechanical Engineering | Electrical Engineering
PROJECT FEATURES
1800kW diesel generator retrofit | 1250kW generator upgrade | Completed 2020
LOCATION
Petawawa, Ontario
KEY SCOPE ELEMENTS
Generator retrofit and upgrade
Canadian Forces Base (CFB) Kingston
Net Zero Feasibility Study
HH Angus led a comprehensive decarbonization study focused on transitioning the Royal Military College and parts of CFB Kingston toward Net Zero operations.
The study evaluated centralized and decentralized heating systems, electric vehicle charging for current and future fleets, and the electrical infrastructure needed to support these initiatives. Our team assessed the aging steam distribution network—largely shallow inverted trench and buried piping with limited tunnels—and identified challenges with condensate return and system efficiency. Following a multi-stakeholder workshop, the study concluded that replacing the existing system with a new hot water distribution network would be more cost-effective than refurbishment.
Multiple heating technologies and operating strategies were evaluated, resulting in a recommendation to replace the central steam plant with smaller Low Carbon Energy Centres (LCEC) serving each campus and distributed systems for remote buildings. The study also addressed local electrical constraints, proposing partnerships with the utility to transfer
and upgrade supply assets to enable future load growth and electrification. A final report outlined decarbonization pathways, economic analysis, infrastructure requirements, and an implementation roadmap aligned with federal green directives.
SERVICES
Advisory Services | Mechanical Engineering | Electrical Engineering
PROJECT FEATURES
Feasibility study for decarbonization | Life cycle cost analysis | More than 100 buildings with different uses | Planning over 25 year time horizon | Completed 2022
LOCATION
Kingston, Ontario
KEY SCOPE ELEMENTS
Lifecycle cost analysis with a federal shadow carbon price defined | Low carbon heating technology studied | Sustainability features include Net Zero, low carbon, building electrification, electric heating, heat pump, geo-exchange, wastewater energy transfer
Opercule Urban Fish Farm
The Opercule Fish Farm project is a pioneering initiative in the heart of Montreal, representing the first urban fish farm in Canada. This innovative project is based on a unique approach to fresh fish production, combining cutting-edge technology, respect for the environment and a local supply network.
Opercule annually raises 25 to 30 tonnes of Arctic Char, a fish species highly prized by Montreal restaurants and residents, and raised without the use of chemicals, hormones or antibiotics.
The primary goal for the Opercule Fish Farm was to create an eco-friendly, sustainable fish farm with a low impact on the environment and providing excellent living conditions for fish. HH Angus worked closely with the client to understand their unique and ground-breaking vision and was able to design innovative solutions tailored to this one-of-a-kind project. The project’s design also stands out for its ability to produce fresh fish locally in a non-coastal city.
This model of aquatic urbanism fits perfectly into a context where demand for local, sustainable products is growing. Working with the HH Angus design and engineering team, Opercule is meeting Montreal’s appetite for Arctic Char by supplying top-quality fish while reducing the usual carbon footprint associated with transporting seafood from coastal regions.
The project's innovative design and short-supply chain production model allow Opercule to raise high-quality fish in an urban environment in response to a growing local demand for sustainable food products. Fish swimming in the morning can be on diners’ plates the same evening, frequently delivered to restaurants by e-bikes to further reduce the product’s carbon footprint.
SERVICES
Prime Consultant | Mechanical Engineering | Electrical Engineering
PROJECT FEATURES
Canada’s first urban commercial fish farm | Sustainable production processes | Reduced carbon footprint compared to traditional fish farming methods | Closed circuit production loop
LOCATION
Montréal, Quebec
KEY SCOPE ELEMENTS
Design and engineering to enable production of food fish in a dense urban environment, utilizing municipal services infrastructure| Production of technical reports for provincial Authorities Having Jurisdiction, due to uniqueness of the project | Custom design solutions to respond to changing operational conditions
Enabling production at scale
No design references or construction expertise existed for this pioneering enterprise, and the client placed their trust in HH Angus’ ingenuity and adaptability to deliver the vision.
The project’s key technical innovation was the development of the Recirculating Aquaculture System (RAS) system - the first of its kind in Quebec - which allows fish to be produced in a closed circuit, from egg to table.
From the outset, we worked very closely with Opercule to thoroughly understand the challenges and goals. The client had a strong vision for their new company, were deeply committed to its success, and actively involved in the project’s technical aspects. One of the owners brought a background in consulting engineering, and this made our collaboration highly productive.
Reducing environmental impact
The primary goal for Opercule was to create an eco-friendly, sustainable fish farm with a low impact on the environment and providing excellent living conditions for fish.
The RAS process is a sustainable model that significantly reduces the environmental footprint of the operation by reducing not only water but alsoenergy consumption compared to traditional aquaculture. The system minimizes the use of these precious resources, a crucial factor in an urban environment. By recovering, filtering and reusing water, the farm significantly reduces water consumption compared to traditional fish farming methods, which are often very water intensive. The system allows the company to reduce water consumption by 100 – 200 times compared to traditional systems.
In terms of waste management, Opercule uses environmentally friendly techniques to treat the organic and biological waste generated by production, helping to reduce overall environmental impact. The project also promotes use of sustainable materials for the construction and fitout of the facilities, reducing the carbon footprint of the entire system.
In addition, the absence of chemicals, hormones and antibiotics in fish production ensures no soil or water contamination. This approach helps preserve local ecosystems and eliminates the risk of pollution.
Engineering design challenges
The complexity of the Opercule project stems from a number of technical and logistical factors. The creation of an urban fish farm requires a completely unique design adapted to a dense urban environment. The design of a water recirculation system, intended to ensure the well-being of the product from the egg stage to the delivery of the fish, required the development and refinement of innovative technologies in filtration, nutrient management, and optimization of living conditions in confined environments.
Challenges included managing water quality, which is essential for fish health, as well as creating an optimal environment for rearing Arctic Char, known to be a delicate species. This challenge involved the creation of autonomous systems to maintain constant temperatures and pH levels, without the need for chemical treatments. In addition, bio-safety management was a priority to avoid contamination.
During the operational phase, it was discovered that the heat generated by the fish—even though they are cold-blooded—had been underestimated. This required adjustments to operational conditions to maintain stable water temperatures. Despite this challenge, our close collaboration with the client ensured these modifications were implemented effectively, showcasing the team’s problem-solving abilities.