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5 MW Flywheel Energy Storage

Flywheel energy storage provides fast-acting power services to keep the grid supply stable during events and quality disturbances

  • Guelph, Ontario

    Guelph, Ontario

Providing voltage and frequency services for the IESO

Guelph Hydro needed to connect a Flywheel Energy Storage System (FESS) at their Arlen Transformer Station (TS). The system would be comprised of ten 500 kW, 480V energy storage flywheels with the ability to inject and store up to 5.0 MW of electrical power to Guelph Hydro’s 13.8 kV distribution system.

Flywheel energy storage systems utilize fast-spinning machines to very quickly inject or absorb reactive and non-reactive power to/from the grid. The fast ramping of these systems can potentially impact the operating conditions of existing power delivery networks thereby requiring a Detailed Connection Impact Assessment (DCIA). We worked with our partner, Teshmont, to perform this DCIA using PSCAD to ensure that the utility’s network would not be compromised with the addition of the FESS.

It was proposed that an underground cable tap connection onto a 13.8 kV feeder of the TS. The interface station would connect the flywheel energy storage facility to the 13.8kV distribution system including a switchgear consisting of a main withdrawable type, primary breaker that would be used as the HV interrupter, and four fused-disconnect switches feeding four padmount transformers. We had previously assisted the client with integration of a current limiting reactor at the station as well as the related grounding system modifications thereby streamlining the assessment process. 

At a Glance



Meet Our Team

Mehrdad Boloorchi, Principal, Power

We create a world that does not have the flaws of the existing world, elevates the standard of living, and adds to the comforts and joys of life.
Mehrdad Boloorchi Principal, Power Read More

Jose Ribon, Electrical Engineering Team Lead

It is intensely-gratifying to lead a team that is confident and dependant of themselves—rather than relying on supervision for solutions.
Jose Ribon Electrical Engineering Team Lead Read More

Mehrdad Rostami, Senior Electrical Engineer

High level studies and simulations, providing the best conceptual cost effective solutions for the energy industry
Mehrdad Rostami Senior Electrical Engineer Read More

Mike Voll, Principal, Sector Lead Smart Technologies

You don’t have to dig deep in the earth to find the energy we need to survive. Blowing wind, flowing rivers and warming sun are easily accessible for those with the passion to harness them.
Mike Voll Principal, Sector Lead Smart Technologies Read More

Hassan Fayaz, Associate, Senior Systems Engineer

A smart, well-executed systems design answers every unknown project question—effectively.
Hassan  Fayaz Associate, Senior Systems Engineer Read More
  • Mehrdad Boloorchi

    Principal, Power

  • Jose Ribon

    Electrical Engineering Team Lead

  • Mehrdad Rostami

    Senior Electrical Engineer

  • Mike Voll

    Principal, Sector Lead Smart Technologies

  • Hassan  Fayaz

    Associate, Senior Systems Engineer

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