Client
Davie Shipyard Canada
Year
2026
Location
Levis

Context

The Davie Shipyard, located in Lévis, Quebec, is undertaking projects to expand and optimize its industrial facilities. In this context, a study to assess peak power demand was commissioned to anticipate future electrical needs and ensure compliance with Hydro-Québec’s requirements (Red Book – Standard E.21-12).

The mandate entrusted to 3E Ing. specifically focused on analyzing the site’s peak load, including planned expansions and their impact on overall energy demand.

Objectives

  • Determine the site’s current and future maximum power demand (MPD).
  • Assess the impact of industrial expansions on electricity demand.
  • Optimize power management to reduce energy costs.
  • Ensure grid and equipment capacity in compliance with Hydro-Québec.

Methodology

The study is based on a structured approach that combines:

  • Analysis of existing electrical load balance sheets.
  • Incorporation of expansion scenarios (new equipment, industrial processes).
  • Modeling of consumption profiles (simultaneous loads, diversity factors).
  • Identification of peak periods and the contributions of the main electrical circuits.
  • Validation of the profile of certain loads using databases from similar sites.

This analysis allowed for a deeper analysis of operational data and the simulation of various usage scenarios.

Key results

  • Identification of the critical loads contributing to the industrial site’s peak power demand.
  • Highlighting the discrepancies between installed capacity and actual power draw.
  • Projection of future demand, taking planned expansions into account.
  • Identification of risks of exceeding capacity limits that could result in rate penalties.

Solutions and recommendations

  • Demand Management Optimization
    • Implementation of strategies for load shedding or reducing non-critical loads.
  • Electrical investment planning
    • Validation of transformer capacity, electrical inputs, and protective devices.
  • Improvement of energy efficiency
    • Reduction of simultaneous loads and better distribution of operating cycles.
  • Preparation for Hydro-Québec requirements
    • Adjustment of contracted power to avoid exceeding the called power.

Impact on the customer

  • Reduced energy costs associated with peak demand.
  • Enhanced industrial operational reliability in the face of grid limitations.
  • Improved expansion planning thanks to a clear understanding of future needs.
  • Regulatory compliance with the electricity provider’s requirements.

Conclusion

The study of peak power demand serves as a strategic tool for energy-intensive industrial sites. In the case of Chantier Davie, this analysis makes it possible to anticipate growth, optimize electrical infrastructure, and ensure reliable and cost-effective long-term operations.

We can help you!

Any questions about measuring peak power?

These customers trust us