Ground mounted solar panels are an increasingly popular option for homeowners with available land who want to maximise the performance of a solar PV system. Unlike roof mounted installations, ground based systems offer greater flexibility in positioning, often delivering higher yields and faster long term returns.
In this guide, SolarTherm UK explains how ground mounted solar panels work, how much space and investment they require and whether they’re the right choice for you.
What Are Ground Mounted Solar Panels?
Ground mounted solar panels are installed on frames on the ground rather than fixed to a roof. While commonly associated with solar farms, they are an excellent solution for domestic solar PV systems, particularly for homes with large gardens or available land.
As these systems are not restricted by roof angle or orientation, installers can position them to face due south at the optimal tilt. This flexibility allows ground mounted solar panels to generate significantly more electricity than many roof mounted systems.
Ground mounted solar panels are ideal when the roof is unsuitable due to shading, space or north facing orientation. Properties needing a larger solar PV system with ample available land can benefit from a ground mounted installation with bifacial solar panels.
Why Ground Mounted Solar Panels Are More Efficient
Ground mounted solar panels typically produce 25-35% more electricity than roof mounted panels. This is due to several key factors:
- Optimal tilt and orientation for maximum sunlight exposure
- Improved airflow, keeping panels cooler and more efficient
- Compatibility with bifacial panels, which capture reflected light from the ground
Bifacial panels can increase output by 10-30% making them particularly effective for ground based installations in open areas.
How Much Do Ground Mounted Solar Panels Cost?
The cost of a ground mounted solar PV system will be higher than traditional roof mounted solar panels. While the majority of the equipment is the same for both systems, ground mounted solar panels require specialist purpose built steel mounting systems, that are built to withstand the elements. These mounting systems need to be anchored into the ground with concrete foundations, and trenching is needed for cable runs back to the property to connect the panels to the existing electrics in the home.
At SolarTherm UK, we typically see ground mounted solar panels costing 25-25% more than roof mounted equivalents, but with noticeably higher energy generation over their lifespan, the additional savings soon outweigh the higher cost.
How Much Space Do Ground Mounted Solar Panels Need?
Space requirements depend on your household’s electricity usage and the size of your solar PV system. Each panel is around 1m x 2m and a typical domestic system of 20 panels will require a minimum of 50m². You should allow 5-10 metres additionally around the array to prevent shading from fences, buildings or trees.
Even smaller gardens can benefit from ground mounted solar panels by using them to supplement roof systems or power outbuildings like sheds and garages.
Do Ground Mounted Solar Panels Need to Be Near the House?
Ground mounted solar panels do not need to be installed next to your property, but greater distances can increase installation costs. Longer cable runs require thicker wiring to prevent voltage drop and longer trenches to protect cables underground. Keeping panels as close to the property as possible helps reduce installation complexity and maintains system efficiency.
Ground Mounted vs Roof Mounted Solar Panels
Ground Mounted Solar Panels
Advantages
- Higher energy generation
- Adjustable tilt and orientation
- Easier access for maintenance and cleaning
- Better ventilation improves panel lifespan
- Ideal for bifacial panels
Disadvantages
- Require sufficient land
- Higher upfront installation cost
- Greater exposure to accidental damage or shading
Roof Mounted Solar Panels
Roof mounted systems remain a strong option for homes with the roof space or limited ground space. They utilise existing structures, are generally cheaper to install and integrate neatly into the property.
However, roof angle, shading and orientation can limit performance compared to ground mounted solar panels.
Do Ground Mounted Solar Panels Need Planning Permission?
In England, planning permission is required if the ground mounted system covers more than nine square meters, or if the property is listed or in a conservation area. Since most ground mounted systems are larger than nine square meters (four or five panels), planning permission is normally required. At SolarTherm UK we can advice and support homeowners with the process of applying for planning permission.
Aesthetic Considerations
Modern ground mounted solar panels can be discreet and visually unobtrusive. Common solutions include:
- Positioning panels in less visible areas of land
- Using low profile mounting frames
- Landscaping with planting or decorative fencing
With thoughtful placement, ground mounted solar panels can blend naturally into rural and semi-rural properties across Essex, Kent and the wider South East.
Are Ground Mounted Solar Panels Worth It?
Ground mounted solar panels are an excellent investment for homeowners with available land who want to maximise the output and capacity of a solar PV system. Although installation costs are higher, increased efficiency, longer lifespan and higher generation often result in better long term savings, lower electricity bills and reduced reliance on the grid.
Ready to Join the Solar Revolution?
If you looking to install solar panels and want to find out how much you can save with a ground mounted solar system, contact SolarTherm UK today for a free, no obligation quote and design, tailored to your property, usage and future energy needs. No hard sell, just honest, expert advice.
Your home. Your energy. Your future.
