Can You Install Solar Panels in Your Garden? Benefits & Costs

As the push for greener energy intensifies and electricity prices continue to rise, many UK homeowners and landlords are exploring solar power. One question becoming increasingly common is: can you install solar panels in your garden? 

Whether your roof isn’t suitable or you're looking to maximise energy output, this guide will walk you through the essentials of garden-mounted solar panels in the UK.

Can You Install Solar Panels in Your Garden?

Yes, you can install solar panels in your garden. Garden-mounted solar systems are a practical and increasingly popular solution in the UK, especially when a property’s roof is shaded, lacks the correct orientation, or simply doesn’t have enough space. 

Unlike roof-mounted systems, garden solar panels offer greater flexibility in terms of tilt and orientation. These are critical factors for maximising solar energy output. 

In the UK, the ideal orientation is due south, with a tilt angle of around 30 to 40 degrees. With a garden installation, you're in control of these variables, which often results in higher efficiency compared to compromised roof setups.

Garden solar panel installations are especially appealing for:

• Homeowners with large gardens or unused land
  
• Landlords or property managers wanting to add renewable energy without altering the building
  
• New builds or renovations with a long-term energy strategy in mind

According to the Energy Saving Trust, garden-mounted solar panels are just as effective as roof-mounted systems when installed correctly. 

Many UK homeowners are now considering garden installations not only for their flexibility but also for their ease of maintenance. Cleaning, repairs, and inspections are simpler and safer when panels are easily accessible at ground level.

Types of Garden Solar Panel Systems

There are two main types of solar panel systems you can install in your garden: ground-mounted systems and portable solar panels.

1. Ground-Mounted Solar Panel Systems

These are the most common type of garden solar installation in the UK. Panels are mounted on a fixed frame that is secured into the ground, either through metal poles driven into the soil or a concrete foundation.

Key features:

• High efficiency: Optimal tilt and orientation for maximum energy production
  
• Permanent installation: Ideal for long-term use
  
• Customisable: Easily scaled up for larger properties or energy needs
  
• Better airflow: Keeps panels cooler, improving performance

Ground-mounted systems are ideal for homeowners who want to maximise solar energy generation and have the outdoor space to accommodate a permanent structure.

2. Portable Solar Panels for Gardens

Portable garden solar panels are lightweight, mobile units designed for temporary or small-scale use. While they don't power your entire home, they’re great for off-grid purposes, outdoor activities, or supplemental charging.

Use cases:

• Charging small devices like phones, tablets, and laptops
  
• Powering garden lights, water features, or security cameras
  
• Supporting sheds, greenhouses, or off-grid garden offices
  
• Camping or emergency backup power

Benefits:

• No planning permission required
  
• No permanent installation, just set them up and plug in
  
• Affordable entry point into solar energy
  
• Easy to move around based on sun positioning

While they’re not a replacement for full-size systems, portable garden panels offer a flexible, low-commitment way to harness solar power for everyday needs.

Do You Need Planning Permission to Install Solar Panels in Your Garden?

In most cases, you do not need planning permission to install solar panels in your garden, thanks to the UK’s Permitted Development Rights, but there are important exceptions and conditions you must be aware of.

When You Usually Don’t Need Planning Permission:

• The array is less than 9 square metres in area
  
• It is not higher than 4 metres above ground level
  
• The installation is for domestic use only
  
• Your property is not listed and not located within a conservation area, National Park, or Area of Outstanding Natural Beauty (AONB)

These rules apply across England, Scotland, and Wales, but your local planning authority may impose additional constraints. That’s why it’s always best to double-check before proceeding.

What Are the Pros and Cons of Installing Solar Panels in Your Garden?

Installing solar panels in your garden, whether ground-mounted or portable, offers a practical alternative to roof installations. 

It's especially beneficial when your roof is shaded, poorly oriented, or doesn’t have enough space. However, like any setup, there are both advantages and drawbacks to consider.

Pros

• Flexible placement – You can install panels at the perfect tilt and orientation for maximum solar gain.
  
• Ideal for unsuitable roofs – Perfect if your roof is shaded, structurally weak, or lacks enough surface area.
  
• Better efficiency control – Ground installations allow you to avoid obstructions and shadows that may limit rooftop performance.
  
• Easier maintenance – Being at ground level, panels are more accessible for cleaning, monitoring, and repairs.
  
• Scalable setups – You often have more space in your garden than on your roof, allowing for larger systems.
  
• No impact on roof structure – There's no need for drilling or structural modification to your home.
  
• Portable options available – Foldable or wheeled solar panels can be used to power garden lights, tools, or small appliances.
  
• Great for renters or temporary use – Portable panels offer renewable energy without a long-term commitment or installation.

Cons

• Higher upfront cost (for fixed systems) – Ground-mounted installations generally require additional hardware and groundwork, increasing costs.
  
• Space requirements – You’ll need clear, unshaded space that might otherwise be used for recreation, gardening, or landscaping.
  
• Planning permission risks – Some local councils may require planning approval for larger or fixed installations, especially in conservation areas.
  
• Visual disruption – Ground-mounted systems can be bulky and less discreet compared to rooftop installations.
  
• Shading concerns – Nearby trees, fences, or garden structures can cast shadows, reducing energy output.
  
• Security considerations – Panels at ground level are more accessible, so may require additional security measures.

What Are the Space Requirements for Garden Solar Panels?

The amount of garden space you’ll need depends on the size of the system and your electricity consumption. Larger systems require more panels, which in turn require more space. 

Below is a general guide based on average UK solar irradiance and optimal panel positioning (south-facing, 30–40° tilt):

These are approximate figures, and actual space requirements may vary depending on:

• The efficiency (higher efficiency = less space)
  
• The layout (portrait vs landscape mounting)
  
• Panel spacing for shading avoidance and airflow

How Much Do Garden Solar Panels Cost?

The cost of a garden-mounted system depends on the size, type of mounting system, accessibility of the site, and any additional features such as trenching or inverters. 

Ground-mounted systems are typically 10–20% more expensive than rooftop systems due to extra materials like racking, framing, and foundation work.

Garden Solar Panel Cost Estimates by Property Size

Note: The above prices do not include battery storage, which is often added to maximise solar usage and reduce reliance on the grid, particularly in the evenings or during winter

• These estimates assume standard 400–450 W panels (each ~1.6–2 m²).
  
• Total cost includes installation, mounting hardware, inverter, and connection to the grid.
  
• Prices are approximate and vary by location, installer rates, and panel brand.

Tip: Use the Eco Answers Quote-Comparison Tool to get accurate quotes tailored to your property and installation requirements.

How Much Will it Cost to Add a Solar Battery?

Adding a battery to your system enables you to store excess solar electricity generated during the day for use at night or during low-sunlight periods. Battery prices vary depending on capacity (measured in kWh), brand, and whether it’s AC- or DC-coupled.

Prices include battery hardware, installation, monitoring system, and integration with your solar array.

What Size Solar Panel System Does the Average UK Home Need?

For an average UK household, typically a 3-bedroom home with 2–4 occupants, a 4 kW solar panel system is generally the most suitable. 

This system can produce approximately 3,400–3,800 kWh per year, which covers around 60–75% of an average home's electricity needs.

If paired with a 7 kWh battery, you can store excess daytime energy and use it during evenings and peak-rate times, maximising self-consumption and reducing grid reliance.

Estimated Total Cost (4 kW System + 7 kWh Battery):

How Much Can You Save with Garden Solar Panels?

Installing garden solar panels can significantly reduce your energy bills, especially for homes with high usage or poor roof space for traditional panels. Your exact savings depend on factors like your system size, local solar irradiance, and electricity tariff.

Here’s a general guide based on typical UK household sizes:

These estimates assume:

• Export of excess electricity via the Smart Export Guarantee (SEG)
• No battery installed (so some unused solar power is exported)
  
• Electricity cost of ~30p per kWh (based on August 2025 UK average)

Add a battery? You could increase your self-consumption rate from 40–50% up to 70–90%, significantly increasing your savings.

Do Garden Solar Panels Perform as Well as Roof Panels?

Yes, and in many cases, garden solar panels can actually outperform roof-mounted systems. This is largely due to the freedom of placement and angle. 

With a ground-mounted system, you're not restricted by the pitch, orientation, or limitations of your existing roof. 

Instead, you can install the panels at the optimal tilt (around 30–40°) and ensure they’re facing true south, which is ideal for capturing maximum sunlight throughout the year in the UK.

According to the Energy Saving Trust, the two most important factors influencing solar panel performance are orientation and shading. 

Garden-mounted panels allow you to fine-tune both of these. You can avoid shading from chimneys, dormers, or neighbouring properties, and space panels further apart if needed to reduce shading from one row to another.

Important Consideration:

Performance ultimately comes down to location-specific variables. If your garden is shaded by trees or tall fences, or if you live in a densely built area with limited sunlight, a rooftop array might be more practical. 

A professional solar survey can help determine which option is better suited to your property.

Do Garden Solar Panels Affect Property Value?

Installing solar panels can and make your home more attractive to eco-conscious buyers. 

According to research by the Department for Energy Security and Net Zero, energy-efficient improvements like solar panels can raise property values by up to 14%.

How to Get the Best Quote for Your Garden Solar Panels

If you're considering a garden solar system, it's essential to compare multiple quotes to ensure competitive pricing and trusted installers.

Use Eco Answers' Free Quote-Comparison Tool

Eco Answers offers a free, easy-to-use comparison tool to help you find the best solar panel deals. Simply provide your property details, and you'll be matched with trusted UK suppliers.

Save time and money by using Eco Answers’ Quote-Comparison Tool

FAQs

1. Do garden solar panels need to be fenced or protected?

While not legally required, many homeowners choose to install low fencing or barriers for safety, especially in households with pets or children. This also protects the panels from accidental damage.

2. Can I install garden solar panels on a rented property?

Yes, but you'll need the landlord's written permission. If you're a landlord, solar panels can be a valuable asset that improves EPC ratings and makes your property more desirable.

3. Are there garden solar panel kits for DIY installation?

Yes, DIY kits are available. However, for SEG eligibility and compliance with UK wiring regulations, professional installation by an MCS-accredited installer is strongly recommended.

4. Can I move the garden panels if I redesign the garden?

Ground-mounted systems offer greater flexibility. While not as simple as unplugging and moving, the panels and racking can be disassembled and relocated with planning.

5. Will I still need grid electricity with garden solar panels?

Yes, unless you go off-grid with sufficient battery storage, most homeowners remain connected to the grid for backup supply during low-sun periods.

Our Verdict

Installing solar panels in your garden is a practical, flexible, and highly efficient way to harness renewable energy in the UK. From reducing energy bills and carbon emissions to increasing property value, the benefits are clear. 

With planning permission generally not required and technology now more affordable than ever, garden-mounted solar systems offer an accessible green energy solution for homeowners, landlords, and businesses alike.

Don't forget to compare quotes from trusted UK installers using Eco Answers’ free quote-comparison tool to get started on your solar journey.