Nova Scotia has one of the most favourable net metering frameworks in Canada. NS Power credits exported solar at the full retail rate of approximately 18.5 cents per kWh, and eligible commercial customers can install systems up to 1 MW. The province receives roughly 1,073 kWh of annual generation per installed kW in the Halifax area, with summer months producing significantly more than winter. But the compliance pathway is specific: Halifax Regional Municipality requires a building permit with an engineer’s structural letter, Nova Scotia Power administers electrical permits, and the year-end credit expiry means system sizing must be precise.
This guide covers the full Nova Scotia solar compliance stack for 2026: NS Power net metering rules by system size tier, the SolarHomes program status, Halifax and regional permitting requirements, electrical code compliance under CSA C22.1, and the step-by-step process from site assessment to permission to operate.
SolarHomes Residential Rebate Closed April 2025
The SolarHomes residential rebate program reached its enrollment limit and closed to new applicants on April 17, 2025. Only projects with pre-approval can still complete installation by March 31, 2026. New residential applicants in 2026 must rely on net metering credits and financing options rather than upfront rebates. The Solar for Non-Profits stream remains open at $0.60 per watt.
NS Power Net Metering Framework
Nova Scotia’s net metering rules are governed by the Renewable Electricity Regulations under the Electricity Act, overseen by the Nova Scotia Utility and Review Board (UARB). NS Power, as the province’s sole electricity distributor, administers the program. The framework uses a tiered structure based on system size and customer type.
Self-Generating Option: Up to 27 kW AC
The Self-Generating Option is available to any NS Power customer as a right to self-generate without formal utility approval. This is the simplest pathway and covers all residential installations and most small commercial systems.
- System size: Up to 27 kW AC nameplate capacity
- Approval: No NS Power pre-approval required — install as of right
- Credit rate: Full retail rate (~18.5 ¢/kWh)
- Credit mechanism: kWh credits accumulate month-to-month and offset future consumption
- Year-end settlement: Unused credits expire on December 31 — no cash payout
- System sizing: Must be sized to meet but not exceed expected annual electricity consumption
The 27 kW AC cap is generous by Canadian residential standards. A typical Nova Scotia home uses 10,000–12,000 kWh annually, so a 7–9 kW system is usually sufficient. The 27 kW limit accommodates larger homes, small farms, and commercial operations without requiring the more complex commercial net metering application.
Commercial Net Metering: 27 kW to 200 kW AC
General commercial and institutional customers can install systems from 27 kW up to 200 kW AC under the Commercial Net Metering Program.
- Application required: Yes — submit interconnection request to NS Power before installation
- Review timeline: NS Power performs a technical review of the interconnection request
- Credit rate: Full retail rate
- Credit rollover: 12 months; expires December 31
- Multiple generators: Multiple systems allowed under a single agreement within the same distribution zone
The application must include a single-line diagram, site plan, inverter specifications, and expected annual generation calculations. NS Power evaluates the application for grid impact, protection coordination, and metering requirements.
Large Commercial and Agricultural: Up to 1,000 kW AC
Demand-charge customers, farms, wineries, and aquaculture operations can install systems up to 1,000 kW AC (1 MW), making Nova Scotia one of the most permissive provinces for large commercial solar.
- Application required: Yes — formal interconnection agreement with NS Power
- Technical review: NS Power conducts a detailed interconnection study for systems above 200 kW
- Metering: Interval metering may be required for demand-charge accounts
- Credit rate: Full retail rate for volumetric charges; demand charges still apply
This tier has driven significant commercial solar growth in Nova Scotia since the 2022 regulatory expansion. Farms and wineries in the Annapolis Valley, aquaculture operations on the South Shore, and industrial facilities in Halifax County have all taken advantage of the 1 MW cap.
| Customer Type | Max System Size | Approval Required | Credit Rate | Credit Expiry |
|---|---|---|---|---|
| Residential / small commercial | 27 kW AC | No | Full retail (~18.5 ¢/kWh) | December 31 |
| General commercial / institutional | 200 kW AC | Yes | Full retail (~18.5 ¢/kWh) | December 31 |
| Farms, wineries, aquaculture, demand-charge | 1,000 kW AC | Yes | Full retail (~18.5 ¢/kWh) | December 31 |
Year-End Credit Expiry Affects Sizing Decisions
Unlike Ontario’s 12-month rolling carryover or Alberta’s annual cash payout, Nova Scotia credits expire to zero on December 31. A system that generates 15,000 kWh annually for a home that consumes 10,000 kWh loses the value of 5,000 kWh each year. Size the system to match annual consumption as closely as possible. Use generation and financial modelling with Nova Scotia-specific consumption profiles to find the optimal system size.
Solar Incentives in Nova Scotia — 2026 Status
SolarHomes Program: Closed to Homeowners
Efficiency Nova Scotia administered the SolarHomes rebate, which was the primary residential solar incentive in the province. The program closed to new applicants on April 17, 2025.
Final program terms (for approved projects only):
- Rebate rate: $0.30 per watt (DC installed capacity)
- Maximum rebate: $3,000
- System size limit: Up to 10 kW DC
- Completion deadline: March 31, 2026
Only customers who received pre-approval before April 17, 2025 can still complete installation and claim the rebate. No new applications are accepted.
Solar for Non-Profits: Still Active
Efficiency Nova Scotia continues to accept applications from registered non-profit organizations and charities:
- Rebate rate: $0.60 per watt (DC)
- Maximum rebate: $15,000 or 25% of system costs before HST, whichever is less
- System type: Grid-tied solar PV
- Eligibility: Registered non-profits and charities with 12+ months of active operation
Halifax Solar City Financing
Halifax Regional Municipality offers property-assessed financing for solar installations through the Solar City program:
- Interest rate: 4.75% fixed
- Term: Up to 10 years
- Repayment: Through property tax bill
- Eligibility: Residential properties in HRM
- The financing transfers with the property if sold
This is not a rebate — it is a low-interest financing tool that spreads the cost of solar over time. For homeowners who missed the SolarHomes rebate window, Solar City financing is one of the few remaining provincial-level support mechanisms.
Federal Programs
Clean Technology Investment Tax Credit: Businesses and farms can claim a refundable 30% tax credit on eligible solar PV capital costs through December 31, 2033. This applies to taxable Canadian corporations, including Canadian-Controlled Private Corporations (CCPCs). Residential homeowners are not eligible.
Canada Greener Homes Programs: Both the grant (closed March 2024) and loan (closed October 2025) are no longer available to new applicants.
| Program | Amount | Eligibility | Status |
|---|---|---|---|
| SolarHomes residential | $0.30/W, max $3,000 | Homeowners | Closed April 2025 |
| Solar for Non-Profits | $0.60/W, max $15,000 | Registered non-profits | Active |
| Halifax Solar City | 4.75% financing, 10 years | HRM residents | Active |
| Federal CT ITC | 30% refundable | Businesses, farms | Active through 2033 |
| Canada Greener Homes Grant | N/A | N/A | Closed March 2024 |
| Canada Greener Homes Loan | N/A | N/A | Closed October 2025 |
Permitting Requirements in Nova Scotia
Halifax Regional Municipality Building Permit
HRM requires a solar building permit for all solar collector installations, both rooftop and ground-mounted. The process is administered by HRM Planning and Development.
Required documents:
- Site-specific letter of engineering confirming structural load capacity
- Engineered design with mechanical connection details
- Manufacturer specifications for all proposed components
- Site plan showing panel layout, setbacks, and property boundaries (ground-mount)
- Plans showing any structural alterations to the existing roof
Permit fee: Approximately $150 for residential rooftop and ground-mounted systems
Processing time: Typically 2–3 weeks for straightforward residential applications
Inspections: HRM requires both a rough-in inspection (during installation) and a final solar inspection (after panels are installed). For simple installations, these may be combined into a single site visit.
Nova Scotia Power Electrical Permit
All solar PV installations require an electrical permit issued by Nova Scotia Power. The permit is applied for by the licensed electrical contractor, not the homeowner.
Key requirements:
- Single-line diagram of the PV system
- Equipment specifications (inverter, modules, combiner, disconnect)
- Proof of contractor license
- Permit fee: approximately $300–$500 for typical residential systems
Inspection: A government electrical inspector verifies compliance with the Canadian Electrical Code before the system is energised. The contractor must be present for the inspection.
Other Municipalities
Outside HRM, permitting requirements vary by municipality:
- Cape Breton Regional Municipality: Contact CBRM Building Services for building permit requirements
- Truro: Building permit may be required; contact Colchester County
- Kentville / Annapolis Valley: Contact respective municipal offices
- Rural areas: Check with the relevant municipal or county authority
In all cases, a Nova Scotia Power electrical permit is required province-wide.
Electrical Code Compliance: CSA C22.1 Section 64
Nova Scotia adopts the Canadian Electrical Code (CSA C22.1) for all electrical installations. Solar PV systems fall under Section 64, which covers renewable energy systems, energy production systems, and energy storage systems.
Key Section 64 Requirements
| Requirement | Detail |
|---|---|
| Maximum DC voltage (residential) | 600 V DC between any two conductors or to ground |
| Conductor sizing | 125% of module rated short-circuit current (Isc) |
| DC wiring type | Type RPV conductors required for DC wiring on or above buildings |
| DC wiring protection | Must be in raceway or approved mechanical protection |
| Rapid shutdown | Required where DC conductors run more than 1 m from array; voltage reduced to 30 V or less within 30 seconds |
| Rapid shutdown actuator | Located at supply authority meter for dwelling units |
| DC arc-fault protection | Required for systems 80 V DC and above |
| Disconnecting means | Must disconnect all ungrounded DC conductors simultaneously |
| AC disconnect | Dedicated disconnect at utility interconnection point |
| Grounding and bonding | All metallic components bonded to grounding electrode system |
| Inverter certification | CSA C22.2 No. 107.1 or equivalent SCC-accredited certification |
Equipment Certification
All electrical equipment must carry certification marks from a Standards Council of Canada (SCC) accredited body. Acceptable marks include CSA, cUL, ULC, and cETLus. Equipment with US-only UL listings is not acceptable for installation in Nova Scotia.
Cold Temperature Voltage Calculations
Nova Scotia winters produce cold temperatures that increase open-circuit voltage. String voltage calculations must account for the lowest expected ambient temperature at the installation site. For Halifax, design for temperatures down to approximately -20°C, with more extreme lows in northern and inland areas.
Licensing Requirements
Electrical Contractor Licensing
All solar PV installations must be performed by or under the supervision of a Nova Scotia-licensed electrical contractor. The Construction Electrician Trade Regulations govern electrical work in the province.
- Penalty for non-compliance: Up to $5,000 for a first offence; $10,000 for repeat offences
- Permit requirement: Only a licensed contractor can obtain an electrical permit from Nova Scotia Power
- Inspection presence: The contractor must be present for the government electrical inspection
There is no separate solar-specific electrical license in Nova Scotia. A licensed construction electrician with the standard Certificate of Qualification can perform solar work.
Professional Engineer Requirements
HRM requires a site-specific letter of engineering confirming that the roof structure can support the solar array load. The engineer must be licensed in Nova Scotia. Generic manufacturer certifications are not accepted in place of a site-specific assessment.
Solar Potential and System Sizing
Nova Scotia’s solar resource is better than its latitude suggests. Halifax receives approximately 1,073 kWh per installed kW annually, with significant seasonal variation.
| Month | Approximate Daily Production (kWh per kW) |
|---|---|
| January | 1.8–2.2 |
| February | 2.5–3.0 |
| March | 3.5–4.0 |
| April | 4.5–5.0 |
| May | 5.5–6.0 |
| June | 6.0–6.5 |
| July | 6.0–6.5 |
| August | 5.5–6.0 |
| September | 4.5–5.0 |
| October | 3.0–3.5 |
| November | 2.0–2.5 |
| December | 1.5–2.0 |
Summer months (May–August) account for roughly 45–50% of annual production. Winter production is significantly lower due to shorter days, lower sun angles, and increased cloud cover. System sizing should account for this seasonal imbalance, particularly for customers with year-round consumption patterns.
The optimal panel tilt for Halifax is approximately 40–45 degrees, though many installers use 30–35 degrees to reduce wind load and improve summer production when the solar resource is strongest.
Design Nova Scotia Solar Systems That Match Consumption
SurgePV models Nova Scotia-specific irradiance data, NS Power net metering credit calculations, and year-end expiry rules — so your system sizing hits the sweet spot between generation and consumption.
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Common Compliance Issues in Nova Scotia
| Issue | Consequence | Fix |
|---|---|---|
| Oversizing beyond annual consumption | Year-end credit expiry wastes generation value | Size system to match 12-month historical consumption using irradiance-adjusted production estimates |
| No engineer’s structural letter | HRM building permit rejected | Engage a Nova Scotia-licensed professional engineer for a site-specific structural assessment |
| Unlicensed contractor | Fines up to $5,000; installation cannot be inspected or connected | Verify contractor license before signing any agreement |
| US-only UL equipment | Inspection failure; cannot be connected | Verify CSA, cUL, ULC, or cETLus certification marks on all equipment |
| Missing rapid shutdown | CEC Section 64 violation; inspection failure | Install rapid shutdown with actuator at supply authority meter |
| No electrical permit before work begins | Illegal installation; cannot be inspected | Contractor must obtain permit from Nova Scotia Power before starting work |
| Self-Generating Option system over 27 kW | NS Power may refuse interconnection or require commercial application | Verify AC nameplate capacity against the 27 kW threshold before installation |
| Expired SolarHomes pre-approval | Rebate forfeited | Complete installation and submit rebate claim by March 31, 2026 |
City-by-City Quick Reference
Halifax (HRM)
- Utility: Nova Scotia Power
- Building permit: Required for all solar installations; engineer’s letter required
- Electrical permit: Nova Scotia Power; $300–$500 typical fee
- Solar City financing: Available (4.75% fixed, 10 years)
- Net metering: Self-Generating Option up to 27 kW; commercial program above
Cape Breton Regional Municipality
- Utility: Nova Scotia Power
- Building permit: Contact CBRM Building Services
- Electrical permit: Nova Scotia Power
- Net metering: Same provincial rules apply
Truro
- Utility: Nova Scotia Power
- Building permit: Contact Colchester County
- Electrical permit: Nova Scotia Power
- Net metering: Same provincial rules apply
Kentville / Annapolis Valley
- Utility: Nova Scotia Power
- Building permit: Contact respective municipal office
- Electrical permit: Nova Scotia Power
- Net metering: Same provincial rules apply; strong solar resource for agricultural systems
Related Canada Compliance Guides
- Canada Solar Compliance Hub
- New Brunswick Solar Guide
- Ontario Solar Regulations
- British Columbia Solar Regulations
- Alberta Solar Guide
- CSA C22.1 Solar Requirements
For solar design software that generates CSA-compliant documentation for Nova Scotia projects, explore solar design software.
