Solar Panel Dimensions
Solar Panel Dimensions: A Complete Guide for UK Property Owners and Managers
As the UK advances towards its ambitious net-zero targets, solar panels have become a popular solution for property owners seeking to reduce energy costs, lower carbon emissions, and boost property value. Whether you’re a landlord, property manager, or business owner, understanding solar panel dimensions is crucial for effective installation planning, compliance, and maximising returns on your investment.
Eco Approach Ltd, as a leading compliance and safety services provider for the built environment, recognises the importance of integrating solar PV systems in a way that aligns with UK legislation and property management best practices. This guide explains everything you need to know about solar panel dimensions, helping you make informed decisions for your property portfolio.
Why Solar Panel Dimensions Matter
The physical size of a solar panel directly affects:
– Roof Compatibility: Ensuring panels fit the available space without compromising safety or aesthetics.
– System Output: Larger panels often generate more electricity, but efficiency and shading must also be considered.
– Installation Logistics: Proper planning avoids structural issues and ensures compliance with UK building regulations and fire safety codes.
– Maintenance Access: Sufficient spacing is needed for ongoing inspections, cleaning, and repairs.
For property professionals, understanding these factors is essential for both regulatory compliance and long-term asset management.
Standard Solar Panel Dimensions in the UK
Residential Solar Panels
Most UK homes use solar panels based on the standard 60-cell configuration. Typical dimensions are:
– Width: 990-1020 mm (approx. 1 metre)
– Length: 1640-1750 mm (approx. 1.65-1.75 metres)
– Depth: 35-40 mm
Surface Area: Around 1.6-1.8 m² per panel
Weight: 18-22 kg per panel
Commercial Solar Panels
Commercial properties often use larger 72-cell panels for greater output:
– Width: 990-1135 mm (approx. 1-1.13 metres)
– Length: 1950-2000 mm (approx. 1.95-2 metres)
– Depth: 35-40 mm
Surface Area: Around 2-2.2 m² per panel
Weight: 22-28 kg per panel
High-Efficiency and Half-Cut Cell Panels
Modern advancements have introduced high-efficiency and half-cut cell panels, which may slightly alter dimensions but generally remain within the above ranges. Always check the manufacturer’s datasheet for precise measurements.
How to Calculate the Number of Solar Panels for Your Roof
1. Measure Usable Roof Space
– Flat Roofs: Allow for panel tilt and spacing for maintenance.
– Pitched Roofs: Account for obstructions like chimneys, skylights, and dormers.
2. Calculate Panel Fit
Divide the available roof area by the surface area of your chosen panel. For example:
– Usable roof area: 30 m²
– Panel area: 1.7 m² (typical residential)
– Potential panels: 30 ÷ 1.7 ≈ 17 panels
Note: Leave space for walkways, access, and fire safety regulations.
3. Consider System Output
Each panel typically produces 320-400W. A 4kW system (common for UK homes) requires about 10-12 standard panels.
Solar Panel Dimensions and UK Compliance
Building Regulations
– Structural Integrity: Ensure your roof can support the weight of the panels and mounting systems.
– Fire Safety: Maintain required clearances for fire escape routes and maintenance access.
– Planning Permission: Most domestic installations are ‘permitted development’, but size and location restrictions apply, especially on listed buildings or in conservation areas.
Electrical and EPC Compliance
– Electrical Safety: Installation must meet BS 7671 wiring regulations.
– EPC Ratings: Solar PV can improve your property’s Energy Performance Certificate (EPC) rating, often a requirement for landlords.
Eco Approach Ltd can coordinate all necessary inspections and certifications, ensuring your solar installation remains compliant and up-to-date with UK legislation.
Factors Affecting Solar Panel Size Selection
1. Roof Space and Orientation
South-facing roofs maximise output, but east/west orientations can still be viable. Limited space may require higher-efficiency (but sometimes larger) panels.
2. Shading
Trees, nearby buildings, and roof features can reduce output. Fewer, larger panels may be preferable if shading is an issue, as microinverters or optimisers can be used to mitigate losses.
3. Aesthetics and Planning
Some property managers prefer all-black or slimline panels for visual appeal, especially in residential or listed settings. These may have slightly different dimensions.
4. Weight Considerations
Older properties may require a structural survey to ensure the roof can safely support the additional load.
Common Solar Panel Brands and Their Dimensions
| Brand | Model | Dimensions (mm) | Power Output (W) |
|–|-|-||
| JA Solar | JAM60S20-370/MR | 1769 x 1052 x 35 | 370 |
| LG | NeON 2 LG370N1C-A5| 1700 x 1016 x 40 | 370 |
| SunPower | SPR-MAX3-400 | 1690 x 1046 x 40 | 400 |
| Q CELLS | Q.PEAK DUO-G9 | 1739 x 1030 x 32 | 350 |
| Trina Solar | TSM-375DE08M.08(II)| 1763 x 1040 x 35 | 375 |
Always consult up-to-date datasheets, as dimensions can vary by model and year.
Solar Panel Mounting Systems and Spacing
– On-Roof Systems: Panels sit above existing tiles, with rails and brackets adding a few centimetres to total height.
– In-Roof Systems: Panels replace roof tiles, sitting flush for a lower profile but may have different weatherproofing requirements.
– Flat Roof Systems: Panels are mounted on frames, tilted at 10-30° for optimal sunlight, requiring more space per panel.
Spacing: Allow at least 20-30 cm between panel rows for airflow, cleaning, and fire safety.
How Eco Approach Ltd Supports Solar Panel Compliance
As a trusted nationwide compliance partner, Eco Approach Ltd provides:
– Pre-installation Surveys: Assess roof suitability, structural integrity, and compliance risks.
– Legally Required Inspections: Electrical safety checks, fire risk assessments, and EPCs.
– Ongoing Compliance Management: Annual checks, maintenance coordination, and certification updates.
– Expert Guidance: Stay ahead of evolving UK solar regulations and best practices.
By partnering with Eco Approach, landlords, agents, and businesses can streamline solar adoption while meeting all legal and safety standards.
Conclusion: Plan Your Solar Panel Installation with Confidence
Understanding solar panel dimensions is the first step towards a safe, compliant, and effective solar PV installation. By considering roof space, panel size, and UK compliance requirements, property professionals can maximise energy savings and future-proof their assets.
For expert advice, compliance management, and nationwide support, contact [Eco Approach Ltd](https://ecoapproach.co.uk) – your single, reliable partner for property compliance and sustainability solutions.
Keywords: solar panel dimensions, UK solar panel sizes, solar panel compliance, property management, EPC, fire safety, building regulations, Eco Approach Ltd
Eco Approach Ltd: Simplifying compliance, reducing risk, and supporting sustainable property management across the UK.