Engineered power that keeps communities connected

Client: Hydro One
Location: Ontario, Canada
Sector: Utilities

Overview

The challenge

Hydro One required a temporary power solution to maintain reliable electricity to communities during planned maintenance

The solution

Aggreko deployed a 2.5 MW temporary power solution that kept customers online during planned hydro plant and transmission maintenance

The impact

Maintained uninterrupted power to customers while allowing critical maintenance to be completed safely and on schedule

2 x 4.5 MWHydro generators supported during maintenance outage

2.5 MWTemporary diesel generation installed

150 kmDistribution network kept energized

Working together

Each year, Hydro One, Ontario, Canada’s largest electricity transmission and distribution provider, works with a major hydroelectric company to schedule dam maintenance outages so critical work can be completed safely without interrupting power to the communities served by the distribution line.

During these outages, the transmission circuit needed to be taken offline for maintenance. Electrical, substation, structural, and underwater dam inspections were also undertaken. Because the generators supply a long distribution line serving schools, residential customers, and remote communities, a temporary power solution was required to keep customers online. The remote location also required equipment to be installed several kilometers away and integrated into the existing medium-voltage network.

Hydro One partnered with Aggreko to provide an engineered temporary power solution that allowed the distribution customer load to remain online while the hydro plant and transmission circuit maintenance activities were completed.

Aggreko installed approximately 2.5 MW of temporary diesel generation, and integrated them into a 25 kV distribution system, allowing power to continue being supplied to the distribution feeder during the planned outage. Aggreko managed installation, commissioning, and operation of the temporary system and has supported this annual maintenance outage over multiple years, acting as a reliable partner for planned maintenance and outage support.

The temporary power solution allowed critical dam, substation, and electrical maintenance activities to proceed without interrupting power to customers. By maintaining continuous power during the outage, the utility and hydroelectric company were able to safely complete annual maintenance while ensuring reliable service to the communities served by the line. Through ongoing support of this project, Aggreko demonstrated its ability to deliver engineered temporary power solutions in remote locations, reinforcing its role as a trusted partner for planned maintenance and critical power projects.

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Ready to work together?

Tough challenge in a tough location? Complex equipment in a demanding environment? Emissions targets to hit? We’ve got you. For as long as you need us. Switch to Aggreko, and keep your world on.