A standby generator installation quote should make clear who owns the electrical work, fuel work, approvals and commissioning. Ontario property owners can compare offers more reliably when those responsibilities are named before equipment is selected. A generator supply price is only one part of a permanent installation.

Keep the Ontario and property-type boundaries clear
Ontario’s Electrical Safety Authority states that a generator permanently connected to a home’s electrical system requires a transfer device to prevent backfeed and an ESA notification. Its guidance recommends using a Licensed Electrical Contractor.[1]
Those statements concern the residential situation described by ESA. For a commercial or other facility, have the responsible contractor establish the applicable design, notification, inspection and other approval requirements for that property. Do not assume a residential quote template covers them.
Ask the contractor to specify the transfer arrangement and any separate load-management strategy required by its design. Do not treat the presence of a transfer switch alone as evidence that every connected load can run simultaneously.
Compare the actual supplier boundaries
Elexa Electric
Published scope: Elexa describes standby-generator electrical installation in Toronto and the GTA and explicitly excludes natural-gas, propane and other fuel work from its electrical scope.[2]
Gap to close in the quote: Name the fuel contractor and the person coordinating the electrical and fuel work, including readiness for commissioning.
Motion Services
Published scope: Motion advertises generator planning, installation, maintenance and repair, with service areas including Centre Wellington, Waterloo and Guelph.[3]
Gap to close in the quote: Confirm which services and trades are included in the particular proposal and which are separately arranged or priced.
These examples describe advertised services, not independently verified performance or a ranking. Confirm current licensing, service coverage, availability and responsibility for the actual address. A broad service menu is not the same as an inclusive project quotation.
Request a site and load assessment
Give the contractor a list of the functions you want to maintain during an outage and the equipment information available for those loads. Identify priorities, expected operating needs and any planned changes. Ask the responsible professional to determine the appropriate system design.
Request a written equipment schedule identifying the generator, transfer equipment, proposed fuel arrangement and any load-management components. Have the contractor explain what the quoted system is intended to operate, what is excluded and the assumptions behind that scope.
The proposed location should be assessed against the manufacturer’s instructions and applicable site requirements, including exhaust, access, noise and relevant clearances. This guide gives no universal clearance or do-it-yourself sizing rule.
Name an owner for every work package
- Site preparation: who provides the base, access and any necessary civil work, and who confirms that it suits the specified equipment.
- Electrical work: the responsible contractor, equipment and installation scope, applicable notifications and completion records.
- Fuel work: the responsible appropriately licensed contractor, supply assessment, installation scope and required checks.
- Approvals: which party establishes, obtains and documents the approvals applicable to the address and property type.
- Coordination: who confirms both trades and the equipment are ready for professional commissioning.
Where the electrical supplier excludes fuel work, as Elexa does,[2] resolve that boundary before comparing its total with a proposal that includes fuel installation. Ask who carries the cost of a return visit if another part of the project is not ready.
Separate price from unconfirmed allowances
Request an itemised CAD quote for equipment, site preparation, electrical work, fuel work, applicable approval charges, commissioning and handover. Mark provisional sums and exclusions, including any work that can only be priced after assessment.
Ask how the final equipment choice, delivery timing or site findings could change the price and schedule. Compare the same completed outcome across suppliers. This guide does not establish an installed-price range or promise a completion date.
Put payment stages and change authorisation in writing. Tie the final handover to the agreed documents and completed work, including any outstanding corrective actions.
Define professional commissioning and handover
Require the responsible contractors to document commissioning against the agreed design and manufacturer requirements. Ask for an explanation of the demonstrated transfer behaviour and intended loads, without attempting connection, switching or fuel-system work yourself.
The handover package should identify the installed equipment, applicable completion and inspection records, commissioning results, operating instructions and service contacts. Request an owner demonstration of normal use, status indications and when to contact the service provider.
Separate equipment warranty, workmanship coverage and routine maintenance. Motion’s published maintenance and repair services show these can be continuing service categories,[3] but their inclusion, price and response commitments still need to appear in your agreement.
A quote is ready to accept when the installation scope, responsible parties and evidence of completion are clear. Resolve gaps between trades before treating the proposed system as a complete standby-power project.
References
- Electrical Safety Authority: Generator Safety (esasafe.com)
- Elexa Electric: Generator Installation (elexaelectric.ca)
- Motion Services: Generator Planning, Installation and Service (motionservices.ca)



