Choosing the right size for your plug-and-play solar panel directly determines the efficiency of your installation and your ability to optimize available space. Current kits range from 1.7 m² to 2.5 m² depending on the model, with sizes suitable for balconies, terraces, and gardens.

Quick answer: standard dimensions

Typical size: 170-190 cm in length × 110-120 cm in width
Average surface area: 1.7 to 2 m² per individual panel
Standard weight: 18 to 22 kg, thickness 3.5 to 4 cm
Associated power: 300 to 580 Wp depending on the surface area and technology
Regulatory limit: 900Wp maximum per circuit (2 panels of 450Wp)
Floor space required: allow 2.5 m² with tilting supports
Distance from electrical outlet: maximum 20 to 100 meters depending on the model

These dimensions allow for flexible installation in most outdoor spaces. Detailed guide below.

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Standard dimensions of plug and play panels

A standard plug-and-play solar panel measures between 170 and 190 cm in length and 110 to 120 cm in width. This size corresponds to a total surface area of ​​1.7 m² to 2.3 m², depending on the manufacturer.

Comparison of dimensions according to the models:

The standard thickness varies between 3.5 and 4 cm for all models, allowing for discreet integration against a wall or on the floor. The average weight of 18 to 22 kg makes it easy for a single person to handle during installation.

These dimensions correspond to panels composed of 60 or 120 monocrystalline photovoltaic half-cells, the dominant technology on the current market. Bifacial panels maintain the same dimensions but capture energy on both sides for a 10 to 15% higher efficiency.

To choose the optimal model according to your needs, consult our guide “plug and play solar panel which one to choose”.

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Surface area required for installation

The surface area occupied exceeds the gross dimension of the panel due to the supports and the tilt required to optimize performance.

Calculation of the actual space required:

• On the ground with tilting supports: allow 2.5 to 3 m² per 2 m² panel. The rear tilting feet add an additional 60 to 80 cm of depth.

• On a vertical balcony: the panel size is sufficient, i.e., 1.7 to 2 m². Check the maximum load allowed by the railing (generally a minimum of 30 kg is required).

• On a terrace or flat roof: allow 30 cm of safety margin all around to withstand the wind and facilitate access for cleaning.

• Wall installation: exact dimensions of the panel + a 10 cm gap from the wall for rear ventilation (crucial for bifacial panels).

For two panels placed side-by-side on the ground, allow at least 5 to 6 m² of continuous, sunny space. This configuration maximizes production while respecting the regulatory limit of 900Wp per outlet circuit recommended by ADEME.

Spacing constraints:

Panels installed on flat roofs require spacing between rows to prevent mutual shading. Leave 1.5 times the height of the inclined panel between each row. For a 170 cm panel inclined at 30°, allow 85 cm of clearance behind it before the next panel.

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Size vs. power: the determining ratio

The watt-peak per square meter ratio measures the energy efficiency of your panel. The higher this ratio, the more electricity your installation produces in a smaller area.

Yield ratios according to technology:

A 2 m² panel with 400 Wp has a power output of 200 Wp/m² , the current market standard. Bring the Sun models achieve 225 Wp/m² thanks to their latest generation monocrystalline technology.

This becomes critical if your space is limited. A usable balcony of 3 m² will benefit more from a compact, high-efficiency panel (450 Wp over 1.7 m²) than from an economical model of equivalent power but more cumbersome.

To compare the performance of the kits, refer to our ranking of the best plug and play solar kits.

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How to calculate your surface area requirements

Optimal sizing is based on three essential parameters.

Step 1: Identify your consumption log

Record the continuous power consumption of your devices operating 24/7:

• Refrigerator: 100-150 W

• Freezer: 80-120 W

• Internet box + decoders: 20-35 W

• Standby power: 30-50 W

• Mechanical ventilation or air conditioning: 15-25 W

• Typical total: 250-380 W continuous consumption

A 400 Wp panel covers 25 to 35% of this need depending on the amount of sunshine. Two 400 Wp panels (800 Wp in total) provide 50 to 70% of the annual base load energy consumption.

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Step 2: Assess the available space

Measure the usable surface area, taking into account:

• Minimum sun exposure 5 hours/day without shade

• Access to an electrical outlet within a 20m radius (100m with a suitable extension cord)

• Stability of the support for a minimum of 20 kg per panel

• Local regulatory constraints (condominium ownership, historical monuments, protected areas)

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Step 3: Calculate the number of panels

Simplified formula: Number of panels = (Target annual consumption in kWh) ÷ (Unit production of one panel)

Concrete example:

Objective: to cover 1200 kWh/year
Production per 400 Wp panel: 588 kWh/year (southern France)
Number of panels: 1200 ÷ 588 = 2.04 → round up to 2 panels
Total surface area required: 2 × 2 m² = 4 m² minimum floor space (6 m² with tilting supports)

This method guarantees realistic sizing tailored to your situation. The advantages and limitations are detailed in our article “Plug and Play Panel: Advantages and Disadvantages”.

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Dimensions according to the type of installation

Each configuration imposes specific constraints.

Floor installation with tilting feet

Dimensions required:

• Length: panel dimensions + 60 to 80 cm (rear feet)

• Width: panel dimensions + 20 cm on each side (stability)

• Minimum surface area for 1 panel: 2.5 to 3 m²

• Minimum surface area for 2 panels side by side: 5 to 6 m²

Bring the Sun kits include adjustable supports that allow you to adjust the tilt according to the season (30° in summer, 60° in winter) to maximize annual production. The legs fold for easy storage when moving.

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Wall or facade installation

Vertical or slightly inclined mounting depending on the brackets provided. The dimensions correspond exactly to those of the panel: 170-190 cm high × 110-120 cm wide .

Technical constraints:

• Load-bearing wall capable of supporting a minimum of 25 kg per fixing point

• South, southeast or southwest orientation required

• Installation height between 1.50 m and 3 m (facilitates cleaning)

• 10 cm gap between wall and panel for ventilation

Configuration suitable for houses without a garden or with little floor space.

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Balcony installation

Specific guardrail supports:

• Compatible railing width: 8 to 15 cm thick

• Recommended panel size: opt for compact models 170 × 110 cm

• Maximum weight: check the balcony's load limit (consultation with the building management is recommended)

• Orientation: south or southwest facing balcony only

Balcony panels are installed vertically against the railing, with the exposed side facing outwards. Some folding models, such as Sunology Play, can be stored away during the winter to protect the installation.

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Flat roof installation

Dimensional specificities:

• Row spacing: 1.5 × height of the inclined panel

• Peripheral safety margin: minimum 30 cm on all sides

• Ballast required: 20 to 40 kg containers per panel (sand or water)

• Usable area: approximately 40-50% of the total roof area

For a flat roof of 15 m², the actual usable surface area is approximately 6 to 7 m², allowing the installation of 2 to 3 panels with optimal spacing.

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Weight and portability

Weight influences mobility and structural constraints.

Weight distribution:

• Panel only: 18 to 22 kg

• With floor supports: 25 to 30 kg (aluminum feet)

• With ballast: 45 to 70 kg total (sandboxes)

• Complete kit for 2 panels: 60 to 90 kg

This relative lightness allows:

• Handling by one person (with precautions)

• Seasonal relocation to optimize sunlight

• Transport by car (folding models fit in the trunk)

• Installation without structural reinforcement of the support

Bifacial models generally weigh 2 to 3 kg more (double glazing) but offer superior performance justifying this extra weight.

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Dimensions and regulations

The dimensions influence certain legal and administrative obligations.

Regulatory thresholds in France:

Plug-and-play panels generally benefit from a permit exemption because they do not constitute a permanent alteration to the building. However, protected areas and some condominium associations sometimes impose restrictions on the dimensions visible from the public road.

Consult the condominium regulations or the Architects of the Buildings of France (ABF) in the classified area before installing visible signs on the facade.

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Optimize production according to dimensions

Layout and orientation maximize efficiency.

Optimization rules:

• Orientation: due south preferred, southeast and southwest acceptable (-10% production)

• Optimal tilt: 30 to 35° on average annually. Adjust to 60° in winter, 20° in summer.

• Avoid shading: even 10% shade reduces production by 40 to 60%. Analyze shade according to the time of day and season.

• Rear ventilation: minimum gap of 10 cm improves efficiency by 5 to 8% by preventing overheating.

• Regular cleaning: dust, pollen, and droppings reduce production by 15 to 25%. Standard dimensions facilitate access for quarterly maintenance.

The modularity of the kits allows you to adjust the angle according to the seasons. In winter, increase the angle. In summer, reduce the angle to maximize capture between 10 a.m. and 4 p.m.

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Dimensions and energy storage

Adding a battery changes the dimensional constraints.

Storage options depending on dimensions:

• Battery integrated into the panel: adds 15 to 25 cm in thickness and 8 to 12 kg. Final dimensions: approximately 190 × 120 × 20 cm.

• Remote ground-mounted battery: typical dimensions 40 × 30 × 20 cm, weight 15 to 30 kg (1 to 3 kWh). Indoor or protected outdoor installation.

• Solar station with battery: total footprint 2.5 to 3 m² including panel + electronic box.

Recent lithium batteries store 1 to 2 kWh for a volume of about 30 liters, enough to power the nighttime base load (fridge, box) for 4 to 8 hours.

For a detailed comparison, see our guide “which battery for plug and play solar panel”.

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Dimensions and budget: what's the link?

Size influences price and profitability.

Price list by size:

Intermediate panels (1.7 to 2 m²) offer the best compromise between cost, power, and ease of handling. Larger models (>2 m²) reduce the price per watt but require more complex installation and two people to handle.

Profitability calculation incorporating the following dimension:

A 2 m² panel at €750 produces 588 kWh/year × €0.20/kWh = €118 in annual savings. Payback period: €750 ÷ €118 = 6.3 years

25-year warranty:

Total savings: 118 × 25 = €2950
Net gain: 2950 - 750 = 2200 €

Each square meter of properly sized and installed panel generates approximately €1100 in net profit over its lifetime in metropolitan France.

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Sizing errors to avoid

5 common mistakes that hinder efficiency:

• Underestimating the space required: forgetting the 60-80 cm of tilting feet leads to an unsuitable purchase.

• Oversizing vs consumption: installing 1600 Wp (4 panels) for a base load of 200W creates an unvalued surplus of 60-70%.

• Neglecting changing shade: a tree may provide shade for 2 hours in summer but 6 hours in winter with low sun.

• Ignoring weight restrictions: an old balcony may be limited to 100 kg/m². A panel + supports + ballast may exceed this.

• Choosing solely based on price/m²: a 150 Wp/m² panel at €250/m² produces less than a premium 230 Wp/m² model at €350/m² over 25 years (profitability difference: €800).

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Conclusion

Key points for choosing the right dimensions:

• Standard dimensions: 170-190 cm × 110-120 cm, surface area 1.7 to 2.3 m² per panel

• Actual space required: 2.5 to 3 m² per floor panel with tiltable supports

• Regulatory limit: maximum of 2 panels of 450 Wp per circuit (900 Wp in total)

• Optimal ratio: aim for 200-240 Wp/m² to maximize production in limited space

• Manageable weight: 18-22 kg allows for single-person installation and seasonal mobility

The dimensions determine both the technical feasibility and the economic viability of your plug-and-play project. Bring the Sun offers a range of formats optimized for balconies, terraces, and gardens, with a 25-year guarantee on energy production.