Why service size suddenly matters in a city of split-levels
For decades a 100-amp service was the comfortable Ottawa default, and the quote requests reaching Ottawa Panel Upgrades show exactly what changed: electrification landed on the driveway and in the mechanical room at the same time. A Level 2 EV charger is one of the largest continuous loads a house can host. A cold-climate heat pump displacing a gas furnace converts your biggest energy demand from the gas meter to the panel. Add an induction range, a hot tub, or one of the secondary suites Ottawa's zoning now encourages, and the demand calculation that used to land comfortably under 100 amps stops doing so.
None of this is guesswork territory — the Canadian Electrical Code load calculation settles it with arithmetic: floor area, space heating, water heating, range, dedicated loads. Partner contractors run it as part of every quote. Plenty of gas-heated Ottawa homes without EV plans still pass at 100 amps, and when that's the result, that's the advice. The upgrade case is for the houses where the additions are real and near-term.
The half-price moment
Here's the economics that decides most files on this site. A service upgrade and a panel replacement share their expensive ingredients: the Hydro Ottawa disconnect, the ESA notification, and a licensed crew spending a day at your service equipment. If your panel has been flagged anyway — Federal Pioneer, Commander/Sylvania, or a fuse board — those costs are already committed. Adding 200-amp capacity in the same window means paying the increment for conductors, main breaker and meter-base work once, instead of re-buying the disconnect, permit and labour as a second project two years later when the EV arrives. Ottawa guides price the bundled job at roughly $2,000–$5,500, against $4,000–$8,000 when the full service entrance must be rebuilt — line-item detail on the cost page.
Rule of thumb worth keeping: the day your flagged panel is being replaced is the cheapest day a 200-amp service will ever have. Every other day, it's a standalone project carrying its own permit, disconnect and labour bill.
What the upgrade physically includes
- 200-amp panel and main breaker — modern CSA-certified equipment (Schneider, Siemens, Eaton) with room for the two-pole breakers EVs and heat pumps need
- Service conductors sized for 200 amps — from the utility connection point to the panel
- Meter base and mast work as required — the exterior components; whether they must change is the biggest cost variable house to house
- Hydro Ottawa coordination — scheduled disconnect and reconnect around the work day
- ESA notification and inspection — producing the certificate your insurer, and eventually your buyer's lawyer, will want to see
Sizing for the house you'll have, not the one you had
The load calculation should be run against your five-year intentions: EV now or next lease cycle, heat pump when the furnace ages out, finished basement, suite potential. In the 1960s–80s neighbourhoods where Ottawa's flagged panels cluster — Nepean, Kanata, Orléans, Gloucester — the housing formats (side-splits, singles with garages, wide lots) are exactly the ones buyers electrify first, which is why the 200-amp question and the old-panel question keep arriving in the same phone call. Answering both with one project is the point of this page.