What a Cranbrook roof produces in a year
Natural Resources Canada models Cranbrook at roughly 1,217 kWh a year for each kW of installed panel capacity on a well oriented, unshaded array. Worked through, that is about 6,100 kWh from a 5 kW system, 7,300 kWh from 6 kW, 9,700 kWh from 8 kW and 12,200 kWh from 10 kW. It is a modelled figure for an idealised roof rather than a promise about yours, so use it to test whether a quoted projection is plausible rather than as the number you plan a budget around.
Two roof characteristics move that figure more than anything else. Direction comes first: a south facing plane collects the highest annual total, east and west planes give up part of it but stretch production across more hours of the day, and a north facing plane rarely justifies the mounting hardware. Obstruction comes second, and it is the one people underestimate. Usable roof area is what remains once vents, chimneys, stacks and edge clearances are taken out, and anything casting a shadow during production hours needs measuring on site, because one shaded module can drag a whole string down unless the design isolates panels with microinverters or optimisers. The annual total also conceals a strong seasonal pattern, with most production arriving in the long days around midsummer.
Your distributor is BC Hydro, and that is not automatic in this region
Cranbrook's own city FAQ names BC Hydro as the electricity provider here, and it is worth confirming rather than assuming, because British Columbia is not served by a single utility. FortisBC covers parts of the southern Interior under its own tariff and runs its own net metering programme, entirely separate from BC Hydro's. Guidance written for a FortisBC customer describes a different rate, a different application and a different export arrangement, so if you are comparing notes with someone in another Interior community, check which utility bills them before you take their experience as a guide to yours.
As a BC Hydro customer, the rule that governs your project is the one that changed on 1 July 2026. BC Hydro closed Rate Schedule 1289, its net metering rate, to new customers on that date. Anything connected since goes on Rate Schedule 2289, the self generation rate, under which a surplus remaining at the end of a billing period is converted into a bill credit at a fixed 10 cents per kWh and applied against energy charges, for systems up to 100 kW. The 100 kW ceiling is far above anything a Cranbrook house would install, so in practice it is not a constraint on a residential project.
Several things did not change. Your panels still supply the house before anything reaches the grid, and your generation is still netted against your consumption inside each billing period, so an array only counts as exporting once it has covered what the house is drawing at that moment. Your rate remains the standard tiered residential one, because BC Hydro's time of day pricing is opt in. And if you already hold net metering, you keep Rate Schedule 1289 until ten years have passed from your own service start date, so a system connected in 2018 transitions in 2028.
A bright roof makes the export rate matter more, not less
There is a counterintuitive consequence to living somewhere with a strong solar resource. The more a roof produces relative to what the household consumes, the larger the share of that production that leaves the property, and under the current rate the share that leaves is the share paid at 10 cents per kWh. The share consumed on site is worth the residential energy rate you would otherwise have paid, which is the higher number. So a generous yield figure does not remove the sizing question, it sharpens it.
That flips the design brief. The old question was how much electricity your household uses in a year, and the answer set the array size. The better question now is how much of the array's output your household can absorb at the moment it is produced. Twelve months of your own consumption data is the right starting point, read not as an annual total but as a daily pattern: what is running at noon, what is running at eight in the evening, and how much of the second could be moved to the first. Running a dishwasher or a hot water tank on a midday timer, or charging an EV through the afternoon rather than overnight, converts export kilowatt hours into self consumed ones and each conversion is worth the gap between the two values.
This is also the argument for pairing storage with the array rather than treating it as a luxury. A battery holds an afternoon surplus that would otherwise have exported at 10 cents and releases it in the evening against the retail energy rate, which is precisely the gap the new rate created. BC Hydro's territory is rated a high value environment for battery storage for exactly this reason, and the rebate structure described below reflects it.
The building permit, and the inspection the City does not do
Cranbrook requires a building permit for new construction, additions, alterations, renovations, relocations and structural repairs. A rooftop array is work on an existing building, so treat it as permit work and confirm with the City which category your installation falls under before you rely on any assumption to the contrary. That call is worth making yourself even if the installer offers to handle the paperwork, because the answer also tells you what drawings the application will need.
The permit has a shelf life that is worth planning around. Construction must begin within 6 months of issuance, and the permit lapses entirely after 24 months. That is generous for a straightforward install, but it becomes relevant if you are pulling a permit in advance of a spring installation window, coordinating the array with a planned reroof, or waiting on equipment. If a project is likely to sit for a while before work starts, note the issuance date and work backwards from those two deadlines.
The City draws a clear line on inspections: it does not handle gas or electrical inspections, and Technical Safety BC's local inspector covers that connection step. A solar installation is substantially electrical work, so this is not a footnote. Your project involves the municipal building permit on one track and the electrical permit and inspection through Technical Safety BC on another, with the interconnection application to BC Hydro running alongside both. Ask your installer who files each one and in what order, because projects usually stall where one approval is waiting on another rather than inside any single queue.
Most Cranbrook homeowners own the roof outright
Of Cranbrook's 8,780 dwellings, 65.2% are single detached houses, each with its own roof and its own electrical service. That is the simple case for solar, and it is the majority case here: no strata council, no shared structure, no approval from a neighbour. The checks that remain are practical. Assess how much life the roof covering has left, since replacing shingles under a mounted array means paying to remove and refit it. Have the electrical service reviewed as well, because the main panel has to accept a back fed breaker sized to the inverter, and an older service may need work before it can.
The remaining third splits into three situations, and in each the first thing to resolve is who holds authority over the roof surface rather than which panels to buy. Low rise apartments are 14.7% of the stock, and there the roof is common property, so an array is a building wide project decided by the owners collectively, funded from the reserve or a levy, and sized against the building's shared consumption. Row houses are 6% of dwellings and are usually strata titled, which typically means exterior and roof changes need an alteration approval even though the home feels like a house. Semi detached homes at 5.8% and duplexes at 2.6% normally share a roof plane with one neighbour, so establish how the property is held and agree the mounting and future reroofing details with the household on the other side of the wall.
Rebates, and where the money stops scaling
The BC Hydro solar and battery rebate pays $1,000 for each kW of installed generator capacity, up to a maximum of $5,000, and never more than 50% of the total installed cost. Two features of that structure are worth noticing in a city with a strong solar resource. The per kW payment stops adding up once the cap is reached, so capacity beyond 5 kW earns no additional rebate, and a homeowner tempted to build large because the roof produces well should price that extra capacity without any rebate support attached to it. And on a competitively priced installation the 50% cost test, rather than the per kW arithmetic, is often what determines the final amount.
Storage is treated separately and, given the export economics above, deserves a look. A battery paired with solar earns $500 per kWh up to $1,500, with a 5 kWh minimum and the same 50% ceiling, and that limit rises to as much as $5,000 where the battery is enrolled in Peak Saver. The enrollment is what unlocks the larger figure, so read those terms before building a budget around it.
Two conditions apply throughout. Since 1 June 2026 the installation has to be carried out by a member of the Home Performance Contractor Network, which is a question to ask while shortlisting rather than after signing. And claiming the rebate places you on the Self Generation Service rate, a condition with no practical cost for a new Cranbrook system, since that is where a new connection starts anyway.
Federal help is narrower than it was. The Canada Greener Homes Loan, interest free up to $40,000, closed to new applications on 2 October 2025 and now funds only loans approved before then. Its successor, the Canada Greener Homes Affordability Program, delivers no cost retrofits through provincial partners to low and median income households, with solar federally eligible though each province publishes its own technology list. There is no Canadian counterpart to the US federal investment tax credit. British Columbia has at times exempted qualifying solar equipment from provincial sales tax, and since that treatment changes with provincial budgets, confirm where it stands for your equipment at the time you buy.