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Energy Solutions > Light Rail Transit Services

ENMAX Power Services Corporation

Our goal is to be your light rail partner of choice.

We’re a fully integrated engineering, procurement, construction and maintenance provider offering electrical services for modern Light Rail Transit (LRT) systems.

View our LRT Brochure

Core LRT services

Our successful history and in-depth knowledge of LRT systems enables us to safely deliver your project on time and on budget – with the flexibility to meet your evolving LRT demands.


We offer a full suite of engineering services – from studies and design to field engineering and commissioning support. Our team also provides maintenance services including troubleshooting and root cause analysis to proactively identify and correct any issues, as well as reliability engineering to allow owners to make informed asset management decisions.


Our project managers successfully deliver projects by managing project safety, quality, schedule, costs, subcontractors and deliverables from inception to completion, and keep you informed every step of the way. Additionally, our depth offers purchasing power, procurement efficiencies, and critical services from our legal and regulatory departments.


Our team of knowledgeable, qualified Power Line Technicians and Power System Electricians from the utility and construction industries are experienced in all traction power construction, commissioning and maintenance activities for your LRT projects.


We maintain the substations, underground distribution and overhead distribution that keep Calgary’s LRT system running. Our dedicated team responds to trouble calls 24 hours a day, seven days a week in challenging year-round conditions, responding to all electric-related incidents on Calgary’s system.

EPSC team

Our Team

From designing your LRT system to building and maintaining it, our team of dedicated professionals has the expertise to seamlessly facilitate your project at every step of the way.

EPSC has over 240 people dedicated to meeting customer requirements. This includes project managers and administrative staff, engineers and design staff, power line technicians, power systems electricians and other field staff.

Our professional engineers are registered with APEGA.

Our Power line technicians are qualified under the Apprenticeship and Industry Training Act, with Red Seal endorsement.

Our Power systems electricians are qualified under the Apprenticeship and Industry Training Act.

Our expertise

Our LRT Systems expertise has been honed on projects over the past 20 years. EPSC has:

  • Delivered the LRT Systems and/or the Traction Power System for all nine LRT extensions in Calgary over the last 20 years,
  • Provided the LRT Systems for the Oliver Bowen Maintenance Facility, and
  • Completed countless maintenance and upgrade projects for the Calgary Transit.


We execute design-build traction power substations and upgrade projects for Calgary Transit, and provide regular maintenance.

Through our participation in new projects as well as ongoing maintenance and upgrades, our Traction Power team can focus on constructability and maintainability. Our design and construction staff work collaboratively to find a solution that will meet the customer requirements.

Our comprehensive reliability program identifies system risks and recommends improvements, resulting in project designs that produce optimal reliability.


We design, construct and maintain the overhead contact system for Calgary’s LRT, consisting of auto-tensioned catenary with portions of trolley and rigid conductor rail. Our power line technicians built the OCS, conduct regular inspections and maintenance and respond to emergency calls as required, including assessing risks and working on the energized system where appropriate.


We can design, construct and maintain the traction power distribution system between the substations and the OCS. Our experience with greenfield duct banks and working in congested settings such as the downtown core allows us to install precast or cast-in-place duct bank, pull and rack cable, and terminate cable efficiently.


We can design and construct signal systems for extensions or upgrade projects


We provide communication infrastructure for security, operations, customer support and substations.

We have designed and/or constructed every major Traction Power project in Calgary during the last twenty years.

traction power system reliability over the last five years

We maintain
118 kms of
OCS and 52 substations

We respond to emergency trouble calls

Our Total Recordable Injury Frequency is consistently
industry average

Recent Projects

West LRT (2010–2012)

The West LRT represented the largest infrastructure project of its kind in Calgary’s history when it was completed in 2012.

Working as a Joint Venture Partner with SNC Lavalin, we provided the LRT Systems for the 8.2km extension.

The traction power portion of this line required nine traction power substations and over 16km of OCS. EPSC designed, procured, constructed and commissioned parts of the traction power and overhead contact system, allowing the successful completion of the project under a tight project schedule.

This project had several firsts for Calgary – first elevated guideway, first underground station, and first installation of overhead rigid conductor rail in a tunnel.

North East LRT Substation Upgrade (2016–2018)

EPSC upgraded nine of the original substations over a three-year period. In order to maintain system reliability, the construction was sequenced so that adjacent substations were not out of service at the same time. A temporary, portable substation was used during the upgrade at one location to ensure reliable power to the adjacent LRT maintenance facility during the upgrade work.

EPSC was able to minimize system disruptions and complete the project ahead of schedule and within budget. This started with careful design. EPSC used 3D modelling to evaluate the layout and equipment conflicts for an existing station, which led to a more accurate set of issued-for-construction drawings and fewer changes during construction. The upgrade itself involved replacing all traction power equipment and completing communication system upgrades. EPSC provided the turnkey design, procurement, and construction solution.

New Central Library LRT Encapsulation (2014 - 2015)

Calgary’s New Central Library presented a unique challenge – to encapsulate the operating LRT so that the library building could be built around the existing LRT.

EPSC designed a feasible approach and relocated the traction power distribution, signals, communication and duct bank system to fit within the encapsulation. This provided a functional solution to Calgary Transit, and a significant cost reduction to the encapsulation itself.

Adding to the complexity of this one-of-a-kind project was the need to minimize revenue service disruptions. This required strategic coordination to ensure the majority of the work activities were bundled into one of the 23 brief, well-executed outages.

Our experience

We have been designing and constructing the City of Calgary’s CTrain LRT system, since it launched in 1981. We began as the City of Calgary electric department.

Today we are a subsidiary of ENMAX. We continue to assist Calgary Transit with upgrade projects, maintain the system’s 52 substations, 118 kms of OCS, and provide routine and emergency maintenance 24/7 – ensuring that one of the busiest transit systems in North America reliably serves its riders in all weather conditions. Over the past five years, this has resulted in traction power system reliability of 99.986 per cent.

See how we’ve grown alongside Calgary’s
LRT system.

View photos and timeline

About ENMAX Power Services Corporation

ENMAX Power Services Corporation provides quality engineering, procurement, construction and maintenance services. In addition to Light Rail Transit Systems, we specialize in providing EPCM for:

  • power infrastructure for residential, commercial and industrial customers
  • streetlight solutions
  • transmission and distribution (underground and overhead applications)
  • telecommunications
  • switchyard and substations

ENMAX Power Services Corporation is an unregulated subsidiary of ENMAX Corporation.

Learn more about the ENMAX Group of Companies

Customers are free to purchase natural gas services or electricity services from a retailer of their choice. For a list of retailers, visit ucahelps.alberta.ca or call 310-4822 (toll free in Alberta).

ENMAX Corporation and or its competitor subsidiaries, including, without limitation, ENMAX Energy Corporation, ENMAX Generation Portfolio Inc., ENMAX Power Services Corporation, and ENMAX Utility Services ltd.