81 reviews
Electrical Panel Upgrades
69/100 Home Generator Index Score
- Says it is insured
- Says it carries WSIB coverage
Mapped to OshawaOpen Mon to Fri
Best Electrical Panel Upgrade Contractors in Oshawa (2026)
Last updated:ByStandby Power Desk
5 electrical panel upgrade contractors serving Oshawa, compiled August 2026.
289 reviews on the 5 with 3+ · median 4.9★ of those · typical $1,500–$4,000 per project (CAD) (RenoHouse) · availability year-round
Which electrical panel upgrade contractors rank highest in Oshawa?
All 5 electrical panel upgrade contractors Home Generator Index tracks in Oshawa, in rank order. Placement cannot be bought. How the score is built.
- 71 reviews
Electrical Panel Upgrades
69/100 Home Generator Index Score
- Says it is licensed
- Says it is an ECRA/ESA licensed electrical contractor
Mapped to OshawaOpen 24 hours daily - Mapped to OshawaOpen 24 hours daily
- 69 reviews
Electrical Panel Upgrades
67/100 Home Generator Index Score
- Says it has been going since 2008
- Says it is insured
Mapped to OshawaOpen 7 days - 29 reviews
Electrical Panel Upgrades
59/100 Home Generator Index Score
- Says it is licensed
Says on its own site it does backup power work
Mapped to OshawaHours not stated
An August 2026 sweep of public listings put 5 electrical panel upgrade contractors in Oshawa. All of them carry review history: 4.86★ on Google over 289 reviews. 60% of the rated companies here sit at 4.8★ or better, so the gap between positions is narrow.
What a Oshawa electrical panel upgrades job is quoted at
Quotes follow the job, not the postcode.
Frequently asked questions
Which electrical panel upgrade contractors cover Oshawa?
- Home Generator Index's August 2026 dataset lists 5 electrical panel upgrade contractors working in Oshawa, averaging 4.86★ on Google, the middle company sitting on 69 reviews. Call three of them and put the written quotes side by side. On backup power the differences hide in the line items: sizing method, who runs the gas, and whether the permit and inspection are included.
Questions to ask your contractor
- Does the quote include the meter, the mast and the service conductors?
- Who books the utility disconnect and reconnect?
- Is the Electrical Safety Authority inspection fee in the price?
- What is the lead time today, from deposit to a working system?
- Can the panel work and the generator tie in run under one inspection?
- Can you show me the load calculation behind this recommendation? Panel upgrade cost breakdown
- Who is physically on site on install day, your crew or a subcontractor?