How do I add power to my shed in the backyard?

Adding power to your backyard shed requires running a new electrical circuit from your main panel, which needs an ESA permit and must be installed by a licensed electrician in Ontario. This isn't a DIY project - it involves working with your main electrical panel and running underground or overhead wiring, both of which require professional installation and inspection.

The most common and code-compliant method is running underground electrical cable from your home's main panel to the shed. Your electrician will install a dedicated circuit breaker in your main panel, then run either direct-burial cable (like NMWU) or individual conductors through underground conduit to a subpanel or outlets in your shed. The circuit size depends on your power needs - typically 15A or 20A for basic lighting and outlets, or 30A+ if you plan to run power tools or heating.

Underground installation is generally preferred because it's more protected from weather and accidental damage. The cable must be buried at the proper depth according to the Ontario Electrical Safety Code - typically 18 inches for direct-burial cable or 12 inches when run through conduit. Your electrician will also need to install proper grounding at the shed, which may require a grounding rod depending on the installation method and distance from your house.

Overhead installation is sometimes more cost-effective but has strict height requirements - minimum 12 feet over walkways and 15 feet over driveways. The wire must be properly supported and protected from weather. Many homeowners prefer underground to avoid visible wires crossing their yard.

For a typical shed installation in Ottawa, expect costs of $1,200 - $2,500 depending on the distance from your house, circuit amperage, and whether you choose underground or overhead routing. This includes the ESA permit (around $75), materials, labor, and inspection. Underground installations typically cost more due to trenching requirements.

ESA permit and inspection are mandatory for this work. Your licensed electrician will pull the permit before starting work, and an ESA inspector will verify the installation meets code requirements. This protects you and ensures your homeowner's insurance remains valid.

Before starting, consider what you'll power in the shed - basic lighting and a few outlets need less capacity than if you plan to run a table saw, welder, or electric heater. Your electrician can help size the circuit appropriately and determine if your main panel has sufficient capacity for the additional load.

For a free consultation on powering your shed, Electrical Ottawa's licensed electricians can assess your specific situation and provide an accurate quote based on your property layout and power requirements.

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Find a Licensed Electrician

Electrical Ottawa connects you with vetted, ESA-licensed electricians from the Ottawa Construction Network:Ottawa Electrical Contractors:

• Ring Electric Inc.
• LB Electric
• Home Town Electrical Services