A right in the Act, not a programme the utility runs
Since the Bill 145 amendments took effect in April 2022, residential solar in Nova Scotia connects under a self-generation option written into the Electricity Act. The practical difference from a utility programme is durability: a programme can be closed to new applicants, capped, or repriced by the utility that runs it, while a statutory right has to be changed by the legislature. That is a difference in how secure the terms are, not a technicality.
The mechanics are deliberately light. There is no separate net metering application to file, no sign-up fee, and the bidirectional meter is installed at no cost to you. A licensed installer submits the plans, the meter is swapped where one is needed, and surplus generation is banked as a credit on your bill. That is the whole administrative path for a Halifax house.
One thing worth knowing so you do not go looking for it: Nova Scotia Power's net metering programme for larger generators now starts at a 27 kWac minimum, which is above the residential ceiling. A house never falls under it. The self-generation option in the Act is the residential route and the only one, which is why an installer talking to you about a net metering application is describing the wrong process.
Paid at your own rate, up to your own consumption
Surplus generation is purchased at a rate equivalent to the rate you pay, which is the residential Domestic Service Tariff at 19.128 cents per kWh effective May 1, 2026. An exported kilowatt-hour is therefore worth what an imported one costs, so there is no penalty for sending power to the grid rather than using it on site.
The limit sits somewhere else, and it is the number that should govern your system size. Exports are bought up to a maximum of your total usage per calendar year, and there is no compensation at all for generation above your annual consumption. Anything the array makes beyond what your household uses in a year is simply given away. That makes annual consumption, not roof area, the ceiling on a sensible Halifax system.
The credit clock runs to January 1. Surplus is banked as a bill credit and settled each January 1, which suits the Nova Scotia year well: a summer surplus carries forward into the dark months rather than expiring monthly. The default residential rate is a flat tariff with no mandatory time-of-use pricing, so there is no on-peak window to design around either. Rates and tariffs for Nova Scotia Power are approved through the Nova Scotia Energy Board, which is where the current numbers are filed if you want to check them yourself.
1,073 kWh per installed kW, and the annual bill that caps it
Natural Resources Canada's photovoltaic dataset puts Halifax at 1,073 kWh a year for each kW of installed capacity on an unshaded, well-oriented array. A 6 kW system therefore models near 6,440 kWh a year and a 9 kW system near 9,660 kWh. Those are useful numbers for converting a quote into an expectation, but they are not the design constraint.
The design constraint is on your own bill. Add up a full year of kWh from your Nova Scotia Power statements, because that total is what your exports can be paid for. A system modelled to produce meaningfully more than that annual figure is buying panels whose output has no buyer, and no amount of good south-facing roof changes that. If your household is about to add an electric vehicle or a heat pump, that is a legitimate reason to size against expected consumption rather than last year's, but it should be a stated assumption in the quote rather than a silent one.
A real Halifax roof will land under the benchmark, and the reasons are worth naming. Coastal fog and cloud cost output in ways a clear-sky model does not capture. Mature trees on a peninsula lot shade at midday, when the loss is largest. An array split between east and west planes yields less over a year than a single well-oriented plane. Ask for a model built on your address and your roof rather than a provincial average, and ask what it assumed about shading.
One permit, one flat fee of $150
Halifax Regional Municipality requires a Building Permit for roof-mounted and ground-mounted solar collectors, and it charges a flat $150 fee for it, effective April 1, 2024 under License, Permit and Processing Fees Administrative Order 15. Engineering-related fees may apply on top where the work calls for them, but the base permit charge itself is a fixed, published number rather than a percentage of project value.
Being named explicitly in the fee schedule is more helpful than it sounds. In many municipalities solar is not a listed category, so a homeowner has to reason by analogy from re-roofing or general alterations and hope the interpretation holds. Halifax removes that ambiguity: solar collectors are a category, the fee is stated, and the permit requirement covers both roof and ground mounts.
The municipality is large and the rule is uniform across it. Whether the address is in Downtown Halifax, Clayton Park, Spryfield, Bedford, Lower Sackville, Timberlea, Hammonds Plains or out along the Prospect Road and the Sambro Loop, the same permit requirement and the same fee apply. What changes between those areas is not the permit but the roof: lot sizes, tree cover and building age vary enormously across the municipality, and those are site-visit questions.
Heritage review, and the three districts where it applies
Nova Scotia has no US-style homeowners associations, so there is no private covenant standing between a Halifax homeowner and a rooftop array. The constraint that does exist is heritage. Halifax maintains a Registry of Heritage Properties through its Heritage Property Program, and altering a registered property requires approval before work proceeds.
There are also three established Heritage Conservation Districts, all in downtown Halifax: Barrington Street, the Old South Suburb and Schmidtville. Altering a property in one of them needs a Certificate of Appropriateness or a Substantial Alterations Approval before work starts. That is a separate step ahead of the building permit, with its own timeline, and it is the stage at which panel placement and street visibility can genuinely change a design.
The order of operations matters more than the difficulty. Check whether your property is registered or sits inside one of the three districts before a layout is drawn and priced. Discovering it afterwards means redesigning around a constraint you could have designed within from the start, and that is the expensive way to learn where the district boundaries run.
Who controls the roof across Halifax's housing mix
Halifax is a city of 439,819 people, and a substantial share of its housing sits in apartment buildings. About 48 per cent of dwellings are single-detached houses with an independently controlled roof, which is the straightforward case: your roof, your decision, subject only to the permit and any heritage designation.
For a large share of the city the roof belongs to someone else. Roughly 21 per cent of dwellings are low-rise apartments and condominiums under five storeys, and 15 per cent are high-rise, where roof access needs condo board or landlord sign-off before anything technical is worth discussing. If you are in that group, the realistic first step is a written question to the board or the building owner, not a quote.
The attached forms sit in between. Semi-detached homes are 6.6 per cent of dwellings, row houses 3.9 per cent and duplexes 3.4 per cent, and these often share a roof structure with a neighbouring unit. Where they do, sizing and wiring may have to account for the unit next door, and the roof plane you can actually use may stop short of where the shingles do. Establish that boundary before the array is laid out.
What is on offer now that SolarHomes has closed
The single most important thing to know about Nova Scotia solar incentives is a negative one. Efficiency Nova Scotia's SolarHomes rebate stopped taking new applications on April 17, 2025 and is now closed. If a quote or an online calculator still shows a SolarHomes amount coming off your price, it is out of date, and that is worth checking before you compare two proposals that may not be assuming the same thing.
What remains on the provincial record is financing rather than a rebate. PACE financing, which attaches the cost of an energy retrofit to the property tax bill rather than requiring cash upfront, is available in participating municipalities including Halifax. It changes when you pay rather than what you pay, which can still be the difference between a project happening and not, but it is not a discount and should not be modelled as one.
The other item people raise, the federal Clean Technology investment tax credit, is not money on the table for you: the Income Tax Act limits it to taxable Canadian corporations and certain trusts. An investment tax credit is claimed against a qualifying investment by an eligible claimant, so ask an accountant whether it reaches your household purchase before it goes into a payback calculation. On batteries more generally, note that Nova Scotia's export arrangement already pays you your own retail rate for surplus up to your annual use, so the case for storage here rests on backup power during outages rather than on capturing a price gap that does not exist.