A published timeline for the utility side
Centre Wellington Hydro runs net metering for systems up to 12 kW with no Connection Impact Assessment required, which keeps a residential project on the simple route. The sequence it publishes is short: submit an application, get a decision within 15 calendar days, sign an Offer to Connect, and get connected within 5 calendar days of Electrical Safety Authority authorization.
Two things are useful about having those numbers. They let you build a real schedule instead of a hopeful one, and they give you a way to tell whether a project is genuinely waiting on the utility or waiting on something your installer has not submitted. If a decision has not arrived well past 15 calendar days, the question to ask is what is missing from the application rather than where it sits in a queue.
The 12 kW figure is also the provincial threshold and it moved recently. As of May 1, 2026 the Ontario Energy Board raised the simplified micro-embedded generation threshold from 10 kW to 12 kW, bringing more residential systems into the streamlined process. If you are holding a quote written before that date, check whether its assumptions about which route your project takes are still current.
The credit clock, and the charge that stays either way
Centre Wellington Hydro writes off surplus credits if they go unused for 12 consecutive months, which matches the provincial rule that Ontario net metering credits carry forward for up to 12 months before expiring. There is no cash payment for a net annual excess anywhere in the province, so the credit exists to be spent on later bills or not at all.
That makes sizing a question about the shape of your year rather than the size of your roof. A system matched to household consumption builds a credit balance from spring through autumn and draws it down over the winter, returning to roughly level each spring. A system well above consumption keeps a balance that never empties, and the oldest slice of it is written off month after month. Ask an installer for the projected credit balance month by month against your own usage, not just an annual production total.
The utility is also explicit about something many proposals gloss over: the fixed monthly distribution charge still applies regardless of generation. Centre Wellington Hydro's residential fixed monthly charge is $35.06. Net metering settles energy, so that charge stays on the account no matter how well the array performs, and any projection showing your bill reaching zero has the account structure wrong.
The township names solar in its permit rules
Centre Wellington's permit page names solar outright. Installing solar panels or a solar hot water system appears on the township's list of work that requires a building permit, while installing new shingles on an existing roof appears on the list that does not. That saves a homeowner the usual inference exercise: a rooftop array needs a permit, and a reroof on its own does not.
Applications are emailed to the township with drawings attached, subject to a 10 MB attachment limit with an upload alternative above that, or submitted through the township's CityView Web Portal. Neither route is complicated, but the attachment limit is worth passing to whoever is preparing your drawings, since a set of structural and electrical drawings can exceed it easily and the failure mode is a submission that silently never arrives.
One procedural detail changes when your application actually starts moving: it is not treated as complete until payment is made, and staff confirm the fee once the application has been received. So there is a step between submitting and being in the queue, and it depends on you. If a schedule assumes the clock starts at submission, it is wrong by however long it takes to receive the fee confirmation and pay it.
Heritage listing, designation and site plan control
There are no homeowners associations here. What a Centre Wellington owner deals with instead is the Ontario Heritage Act and site plan control, and the first of those turns on a distinction worth getting right before you worry about it.
The township keeps a Heritage Register that lists both properties designated under the Act and undesignated ones considered to have potential heritage value, and it says plainly that being listed on the Register does not impact the ability to make alterations. Designation is the thing that carries obligations: on a designated property a heritage permit may be required for alterations affecting identified heritage attributes. So if you are told your house is on the Heritage Register, the follow-up question is whether it is designated, because listed and designated are not the same status.
Site plan control is the other layer, and the whole township is designated a Site Plan Control Area. The categories it lists include residential developments of more than 10 units, which is a scale well beyond a house adding panels. For a single dwelling, then, the realistic path runs through the building permit and, only if the property is designated, a heritage permit. Confirm both with the township rather than assuming, but do not let the words site plan control alarm you before you have asked.
Production in Fergus and Elora, and what to claim
NRCan puts Centre Wellington's photovoltaic potential at 1,138 kWh per installed kW per year for an optimally tilted array, covering the township that takes in Fergus and Elora. Multiplying that by a proposed system size gives a starting annual estimate, which then comes down for pitch, orientation, shading and snow cover. Ask for the month by month version, since the monthly shape is what determines whether your credits clear inside the 12 month window and the annual number cannot show it.
Centre Wellington Hydro customers can be on time-of-use pricing, and where you are, electricity your household uses at the moment it is generated avoids a purchase at whatever price applies in that window. Shifting flexible loads such as laundry, dishwashing or vehicle charging into daylight is free and it makes a measurable difference. Battery storage does the same thing with hardware, which is why Ontario's rebate programme funds solar and storage together rather than panels alone.
On the programmes themselves: Ontario's Home Renovation Savings Program provides combined rebates of up to $10,000 for solar PV paired with battery storage, having launched in January 2025 and been expanded for the 2026-27 programme year running April 1, 2026 to March 31, 2027. Before applying, ask which configuration your system will be in, because homeowners taking the HRSP solar incentive are generally directed to a load-displacement configuration rather than full net metering. Federally, the Canada Greener Homes Loan, interest-free up to $40,000, stopped accepting new applications on October 2, 2025 and only previously approved loans are being funded; the Canada Greener Homes Affordability Program launched in September 2025 for low- to median-income households, with solar PV federally eligible but each province setting its own technology list. Canada has no federal investment tax credit for residential solar.