Understanding your Consumption
Power system technical requirements, standards and codes for large-power customers
Large-power customers are required to comply with a number of technical requirements, standards and codes governing the design and installation of systems connected to Hydro-Québec's power system.
Transmission system
- Current version of documents [in French only]
- Previous versions [in French only]
Distribution system
- Standard C.22-03: Technical requirements for connecting fluctuating loads to the Hydro-Québec distribution system
- Standard C.25-01: Technical requirements for harmonic emissions by customer facilities connected to the Hydro-Québec distribution system
- Standard E.21-12: Medium-voltage electrical service (Red book)
- Standard E.21-11: Low-voltage electrical service from distribution substations (Green book)
- Standard E.21-10: Low-voltage electrical service (Blue book)
- Standard F. 22-01: Electricity metering for medium-and high-voltage installations
