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What Is a Solar Carport?
A carport is an open-sided structure designed to provide covered parking and protect vehicles from the weather. A solar carport adds solar photovoltaic (PV) panels above the parking area, allowing the same space to provide vehicle shelter while also generating electricity.
Solar carports can range from smaller structures over residential driveways to larger installations covering commercial car parks, workplace and shared parking areas, hotels, leisure facilities and rural properties. The panels are supported above the parking area, leaving enough space for vehicles underneath while making use of an area that would otherwise primarily serve as parking.
Unlike rooftop solar, a solar carport does not depend on having a suitable building roof. This can make it an alternative for properties with limited roof space, unsuitable roof orientation or significant shading, provided there is enough suitable outdoor space for the structure.
A solar carport can also be integrated with other energy technologies, such as EV chargers and battery storage. Depending on the system design, the electricity generated can be used on the property, used to charge an EV, stored for later use or exported to the grid.
How Does a Solar Carport Work?
A solar carport works in much the same way as a conventional solar PV system. Solar panels mounted above the parking area capture sunlight and convert it into direct current (DC) electricity. An inverter then converts the DC electricity into alternating current (AC) electricity that can be used by the home or building.
The electricity generated can be used directly to power household appliances and other electrical loads or to charge an electric vehicle (EV) during the day. If the system includes battery storage, surplus solar electricity can be stored for later use, such as in the evening or when solar generation is lower. Depending on the system design, grid connection and electricity tariff, any remaining surplus electricity may also be exported to the grid.
In this way, a solar carport can serve as more than a covered parking structure: it can form part of a wider energy system that connects solar generation with household electricity use, EV charging and battery storage.
How Much Electricity Can a Solar Carport Generate?
A solar carport’s electricity generation depends on its installed solar capacity and site conditions, including panel orientation, tilt, shading and local solar conditions. Larger carports can accommodate more solar panels, increasing the system’s installed capacity and potential generation.
A simple way to estimate solar generation is:
Estimated Solar Generation (kWh) = Solar Carport Capacity (kW) × Peak Sun Hours (hours)
For example, a 4 kW solar carport receiving 5.5 hours of peak sunlight could theoretically generate:
4 kW × 5.5 hours = 22 kWh
This is an estimate rather than a standard output for UK solar carports. Actual generation will vary depending on location, orientation, tilt, shading and system design.
Solar Carport vs Rooftop Solar: What’s the Difference?
The main difference is where the solar panels are installed. Rooftop solar uses an existing roof, while a solar carport requires a separate structure over a driveway or parking area.
|
Factor |
Solar Carport |
Rooftop Solar |
|
Installation location |
Driveway or parking area |
Existing roof |
|
Roof condition |
Not dependent on the house roof |
Roof condition is important |
|
Parking protection |
Provides shade and weather protection |
No |
|
EV charging integration |
Convenient near parking spaces |
Depends on charger location and cabling |
|
Available solar area |
Depends on carport and parking space |
Depends on usable roof space |
|
Panel positioning |
Can offer more design flexibility |
Limited by roof orientation and layout |
|
Installation structure |
Requires a separate structure and foundations |
Uses the existing roof |
|
Upfront cost |
Often higher due to the additional structure |
Often lower where a suitable roof already exists |
If your roof has enough unshaded space and is in good condition, rooftop solar may be the simpler option because it uses a structure that is already there. A solar carport can be more practical when the roof is unsuitable, when additional solar capacity is needed, or when you also want covered parking. It can also offer more flexibility in panel orientation and make EV charging easier to integrate close to where the vehicle is parked.
The two systems do not have to be an either-or choice. Where space and energy needs justify it, a solar carport can complement an existing rooftop system and increase the total area available for solar generation. Electricity from either system can be used in the home, directed to an EV charger, stored for later use or exported to the grid where applicable.
What Are the Pros and Cons of a Solar Carport?
Solar carports offer both energy and practical benefits, but their suitability depends on the available space, installation costs and site requirements.
Pros of Solar Carports
- Makes use of the space above parking areas. A driveway or car park can support solar generation without requiring separate land solely for the solar installation. This can be particularly useful where suitable roof space is limited.
- Provides covered parking. A solar carport helps shelter vehicles from rain and direct sunlight while generating electricity from the same footprint. The shade can also help reduce heat build-up inside parked vehicles during warmer weather.
- Works well with EV charging. Electricity generated by the carport can be used to charge an EV during daylight hours, allowing more of the solar electricity to be consumed directly on-site.
- Can be paired with battery storage. Surplus solar electricity can be stored for use in the evening or when solar generation is lower. A home battery storage system can therefore help make more of the electricity generated during the day available for later use.
- Offers more flexibility in panel positioning. Because a solar carport is purpose-built, its design may provide more flexibility in panel orientation and angle than an existing roof, subject to the layout and other site requirements.
- Provides an alternative when rooftop solar is unsuitable. A solar carport creates another location for solar panels where roof space is limited, heavily shaded or structurally unsuitable.
Cons of Solar Carports
- Higher upfront cost. In addition to the solar PV equipment, a solar carport requires a supporting structure, foundations and associated installation work, adding to the initial project cost.
- Requires suitable outdoor space. The site needs enough room for the structure while maintaining vehicle access, sufficient clearance and suitable solar exposure. This can limit solar carports on smaller or heavily shaded properties.
- Planning and building requirements may apply. Requirements can vary depending on the carport’s size, design and location, so the relevant local planning and building requirements should be checked before installation.
- Installation can be more complex. Groundwork, foundations, structural assembly, drainage and electrical connections may all form part of the installation. On larger car parks, construction work may also temporarily restrict access to some parking spaces.
How Much Does a Solar Carport Cost in the UK?
Solar carport costs in the UK vary considerably depending on the size, structural design and solar PV capacity. According to a recent UK solar carport cost guide, a residential solar carport can typically cost around £10,000 to £20,000 or more. As a general industry rule of thumb, costs may be around £10,000 per parking space when the frame, groundworks, solar panels and electrical connection are included. These figures should be treated as indicative rather than fixed prices.
A complete solar carport quote may cover several parts of the project:
- Carport structure and foundations: The supporting frame, mounting system and necessary groundworks.
- Solar PV system: Solar panels, inverter and related equipment needed to generate usable electricity.
- Electrical installation: Cabling and connection work between the solar carport and the property or grid.
- Planning and professional services: Planning, structural or other professional fees where required.
- Optional upgrades: EV chargers, battery storage, lighting or other features added to the system.
Actual costs can vary considerably between projects and installers, so these figures are best treated as a general guide. For a more realistic budget, compare several site-specific quotes and check what each one includes, particularly the structure, groundworks, electrical work and any optional equipment.
How Can a Solar Carport Power Your Home or EV?
A solar carport uses photovoltaic (PV) panels installed over a parking area to generate electricity from daylight. The electricity can be used on site, including for household electricity demand or EV charging, while surplus generation can potentially be stored in a battery or exported to the electricity grid.
The UK government's Department for Energy Security and Net Zero (DESNZ) has specifically examined solar canopies on outdoor car parks alongside EV charging infrastructure, recognising the potential for combining solar generation with vehicle charging.
Using Solar Carport Energy at Home
When a solar PV system on a carport is connected to a property's electrical system, the electricity generated can be used by the home's electrical loads.
Solar generation varies according to daylight and weather conditions, so the amount of electricity available for the home will change throughout the day and year. Energy Saving Trust notes that solar panels generate electricity from daylight, including on cloudy days, although the amount generated varies.
If the solar system produces more electricity than the property is using, the surplus can either be stored in a compatible battery or exported to the grid. In Great Britain, eligible solar PV systems can receive payments for exported electricity through the Smart Export Guarantee. Ofgem states that the SEG applies to eligible solar PV installations with a total installed capacity of up to 5MW.
Charging an EV With a Solar Carport
A solar carport can charge an EV using electricity generated by its PV panels. Energy Saving Trust – Charging Electric Vehicles gives 25–100 kWh as a range of average EV battery sizes, with 50 kWh and 75 kWh among the examples used in its UK charging guidance.
Solar output varies with daylight and weather, so it may not always meet the EV's charging demand. When solar generation is insufficient, a grid-connected system can draw electricity from the grid. Battery storage can also provide stored electricity when solar generation is low.
If you are a homeowner who wants to connect your grid, solar panels and battery storage, the BLUETTI Apex 300 can be integrated into a home energy system. It offers 2,764.8Wh of capacity and 3,840W of output, with expandable capacity and output when paired with compatible systems.
For context, Energy Saving Trust – Solar Panels says the average UK solar PV system is around 4.5 kWp. To make a simple generation estimate, multiply the system's power output in kW by the number of peak sun hours. For example, a 4 kW system receiving 5.5 peak sun hours could theoretically generate 22 kWh.
Adding Battery Storage to a Solar Carport
Adding a battery allows surplus solar electricity to be stored and used later, such as at night or when solar generation is insufficient. It can also store cheaper grid electricity for later use, depending on the tariff and battery system.
How to Plan and Install a Solar Carport in the UK
Planning a solar carport involves more than deciding how many solar panels to install. The site needs to accommodate the structure and vehicles while providing suitable solar exposure, and the system should be designed around the property's electricity demand and relevant planning, building and grid-connection requirements.
Step 1: Assess the Site and Size the Solar System
Start by assessing the available parking area and whether it can accommodate the proposed carport without restricting normal vehicle access.
Key factors to consider include:
- Available ground and parking area: Check how much space is available and how many vehicles the carport needs to accommodate.
- Panel orientation and tilt: Consider how the canopy can be positioned to receive suitable solar exposure.
- Shading: Nearby buildings, trees and other obstructions can reduce solar generation.
- Vehicle access and clearance: Allow enough space for vehicles to enter, park and leave safely.
- Ground and drainage conditions: The site needs to support the foundations while allowing appropriate drainage.
- Cable routes and connection points: Consider how the solar system will connect to the property's electrical installation.
The solar PV system can then be sized according to the available carport area and the property's electricity demand. A household with relatively low electricity consumption may need less solar capacity, while a property with higher demand from loads such as an EV or heat pump may be able to make use of a larger system.
Step 2: Check Planning, Building and Grid Requirements
Before finalising the design, check which planning, building and grid-connection requirements apply to the project. Whether planning permission is required depends on factors such as the type of property, location, size and design of the solar carport.Different rules can apply to residential and non-domestic projects, so the relevant local planning requirements should be checked before construction begins. Planning permission and Building Regulations approval are separate requirements.
In England, some carports may be exempt from Building Regulations where they meet specific conditions. For example, a carport with a floor area of no more than 30 m² (Carport Building Regulations guidance) may be exempt where it is open on at least two sides.
However, electrical work may still need to comply with the applicable Building Regulations. For a grid-connected solar carport, the appropriate grid-connection process should also be established with the local Distribution Network Operator (DNO). The requirements can depend on factors such as the system capacity, inverter and whether electricity will be exported to the grid. Because the requirements can vary by location and project type, check the applicable planning, building-control and grid-connection requirements with the relevant authorities and your installer before construction begins.
Step 3: Finalise the Design and Install the Solar Carport
Once the site assessment and relevant requirements have been confirmed, the final design can bring together the carport structure, foundations, solar array and electrical equipment. Any planned EV charger or battery storage should also be accounted for at this stage so that the necessary electrical connections can be incorporated into the system design.
Installation typically involves:
- Preparing the site and foundations
- Installing the supporting carport structure
- Mounting the solar PV panels
- Installing the inverter, cabling and other electrical equipment
- Connecting any EV charger or battery included in the design
- Connecting the system to the property's electrical installation
- Testing and commissioning the completed system
The structural and electrical work should be carried out by suitably qualified professionals. For a grid-connected system, the installer should also complete the applicable grid-connection and commissioning requirements before the system enters normal operation.
Is a Solar Carport Worth It?
Whether a solar carport is worthwhile depends on your property, electricity use and available parking space. For many UK homeowners, a solar carport can be a worthwhile long-term investment, particularly when solar panels are combined with battery storage. By generating electricity during the day and storing surplus energy for use when solar generation is lower, a well-designed system can reduce reliance on grid electricity and increase on-site use of solar generation.
Based on Energy Saving Trust, an independent UK organisation that provides advice on energy efficiency, renewable energy and low-carbon technologies, the actual payback period depends on factors including installation costs, electricity use, solar generation and export arrangements.
Actual payback periods vary between properties and systems. Solar generation, installation costs, electricity tariffs, battery use and export rates can all affect the financial return. Energy Saving Trust notes that solar panels can provide a payback within their operating lifetime, while battery storage can increase the proportion of generated electricity that is used on site.
Conclusion
A solar carport combines covered parking with solar electricity generation, allowing homes and businesses to make productive use of the space above driveways and car parks. It can be particularly useful where rooftop solar is limited, while also providing opportunities to support household electricity use, EV charging and battery storage.
Whether a solar carport makes financial sense depends on the property and how the system will be used. Where suitable roof space is already available, rooftop solar may involve lower installation costs. A solar carport may be more relevant where additional solar capacity or covered parking is needed, or where the existing roof is unsuitable for solar panels.
Before installing a solar carport in the UK, assess the available space, expected solar generation and total project cost, and check the relevant planning, building and grid-connection requirements. If you are also considering how solar panels, battery storage and grid connection can work together, read our guide to solar power for your home.
FAQ About Solar Carports in the UK
What Are the Best Solar Carport Options Available in the UK?
The appropriate solar carport depends on the available parking space and how you intend to use the electricity. For a single household, a compact carport with solar panels and an EV charger may be sufficient. Larger properties, workplaces and commercial sites may benefit from multi-bay structures with larger PV systems and battery storage. When comparing options, consider solar capacity, structural quality, panel orientation, inverter efficiency, EV charging compatibility, battery integration and installation requirements rather than focusing solely on the upfront price.
Which Side Should the Solar Carport Face?
In the UK, a south-facing solar array will generally receive the most sunlight over the course of the day. However, east- and west-facing systems can also generate useful amounts of electricity and may better match morning or afternoon electricity consumption. The exact orientation is only one factor. Panel tilt, shading, local conditions and the available site can all affect annual generation.
Fixed Solar Panel or Plug-in Solar Panel?
Fixed solar panels are the more relevant option for a permanent solar carport because they can be integrated into the structure and connected to a suitable inverter and electrical system. Plug-in solar products are generally designed for smaller-scale applications and may not provide the same generation capacity or integration options as a professionally installed solar PV system. For a permanent carport, the choice should be based on the required generation capacity, electrical setup, structural design and applicable UK regulations.
How Long Do Solar Carports Last?
A solar carport consists of two main components: the supporting structure and the solar PV system. A well-designed structure can last for many years, while solar panels are generally designed to operate for several decades, although their electricity output gradually decreases over time. The actual lifespan depends on the quality of the materials, installation, weather exposure and maintenance.
Can I Use Solar Panels as a Carport Roof?
Yes. Solar panels can be incorporated into the roof of a carport, allowing the structure to provide covered parking while generating electricity. However, the carport needs to be designed to support the solar array and withstand relevant structural and weather loads. The design should also consider drainage, waterproofing, electrical connections and safe vehicle clearance.
Do You Need Planning Permission for a Solar Carport in the UK?
It depends on the location, property type and design of the solar carport. Some projects may fall within permitted development rights, while others may require planning permission or prior approval. Requirements can also differ between residential and non-domestic properties and across different parts of the UK. Before installation, check with the relevant local planning authority and confirm whether any Building Regulations or grid-connection requirements also apply.
