Bradford roofs and what they will produce
Nearly 75% of dwellings in Bradford West Gwillimbury are single-detached houses, 10,025 of 13,415 in the 2021 census, and under 7% are apartments. In practice that means the roof is almost always the homeowner's own decision, which is not true of most Ontario towns this size. Semi-detached homes account for about 7% and row houses about 5%, so the shared-roofline cases exist but they are the exception rather than the pattern.
Much of that stock is newer subdivision construction, and that helps in concrete ways. Roof planes tend to be large and simple rather than broken up by decades of additions, orientations repeat street to street, and the shingles usually have years of service left. That last point deserves checking before anything else: replacing a roof under a five-year-old array means paying to remove the array and put it back, so if your shingles are near the end of their run, do the roof first and the solar second.
The local solar resource is about 1,157 kWh a year for every kW of panel capacity, for an array that is well oriented and unshaded. Use that to work backwards from your own annual consumption rather than to justify the largest system the roof will hold, because Ontario pays nothing for net annual excess generation.
Two approvals: the town, and your conservation authority
Bradford West Gwillimbury requires a building permit for most new construction, alteration or repair work over ten square metres. A rooftop array clears that threshold comfortably, so plan on a permit. The town has not published a solar-specific permit guide, which means the drawings, requirements and fees that apply to your project are worth confirming directly with the Building Division rather than inferring from a general renovation page.
The second track is the one that catches people out. If your property sits in a regulated area, you may also need approval from a conservation authority: either Lake Simcoe or Nottawasaga Valley, depending on where in the municipality you are. Whether that applies is a property-by-property question with a clean answer, so ask it early. An approval discovered late is a delay; an approval discovered after installation is a much larger problem.
Both of these run alongside Alectra's connection process, not instead of it. The town approves the work on the building, the conservation authority (where it applies) approves work in a regulated area, and the utility approves the grid connection. None of the three waives another, so treat them as parallel timelines when you plan the project rather than a single queue.
What Alectra credits you for exported power
Alectra installs a bidirectional meter and bills net metering customers monthly on the difference between what they draw and what they send back. Export more than you import in a given month and the surplus becomes a bill credit, not a cheque.
Those credits roll over for up to 12 consecutive months before they expire, and they can only offset future electricity charges, so they will not reduce water or sewer charges on the same bill. Ontario's framework sets their value: exported power is credited kilowatt hour for kilowatt hour at the retail electricity rate, carried forward up to 12 months, with no cash payment for net annual excess. Put those two rules together and the ceiling on a sensible system size is your own annual consumption, not your roof area.
Alectra residential customers are billed on time-of-use pricing, so the hour in which you use a kilowatt hour decides what avoiding it was worth. Under time-of-use, self-consumption and storage carry more value than they would on a flat rate. That is the real argument for designing around your household's load shape, and the reason a battery is a live question here rather than an add-on to be dismissed.
Alectra's Micro Generation stream, in order
Systems up to 12 kW go through Alectra's Micro Generation stream: a preliminary consultation, a Form C application, an Offer to Connect, an Electrical Safety Authority inspection, a Commissioning Verification Form, and a Connection Agreement, and only then the meter swap.
The 12 kW line moved recently. As of May 1, 2026 the Ontario Energy Board raised the simplified micro-embedded generation threshold from 10 kW to 12 kW, which matters in a town of large single-detached homes where a design can easily be pushed toward the top of the range. If a proposal lands above 12 kW, ask what the heavier connection review adds in time before you agree to the extra capacity.
The Connection Agreement is between you and Alectra even though your installer files the paperwork, so read it. And the system is not meant to operate before that agreement is in place and the bidirectional meter is installed. Build that into the schedule: on a project with a town permit, a possible conservation authority approval and a utility connection all in flight, the install date is rarely the switch-on date.
Rebates and financing available to you here
Ontario's Home Renovation Savings Program is the live provincial offer: combined rebates of up to $10,000 for solar PV paired with battery storage. It launched in January 2025 and was expanded for the 2026-27 programme year, which runs April 1, 2026 to March 31, 2027.
Read the pairing condition before you commit to a design, because it changes the hardware and not just the paperwork. Homeowners taking the programme's solar incentive are generally directed to a load-displacement configuration rather than full net metering, and the two treat exported power differently. Confirm the current rules with your installer and with Alectra, then choose a configuration, rather than the other way around.
On the federal side the picture has narrowed. The Canada Greener Homes Loan, interest-free up to $40,000, stopped accepting new applications on October 2, 2025 and now funds only previously approved loans. The Canada Greener Homes Affordability Program replaced it in September 2025, delivering no-cost retrofits through participating provinces, which do not currently include Ontario, for low to median income households, with solar federally eligible but each province setting its own technology list. There is no Canadian equivalent of the United States investment tax credit for residential solar.
Local financing is worth one phone call. Some Ontario municipalities and utilities periodically offer a local improvement charge or on-bill financing that can cover solar work, but availability is local and changes frequently, so ask what is on offer in your service area now rather than trusting a list compiled elsewhere.