Do you need planning permission for solar panels?

Most residential solar panel installations in the UK fall under Permitted Development Rights (PDR) and do not require full planning permission. However, specific conditions, such as your property being a listed building, located in a conservation area, or if the panels exceed certain size or height limits, will trigger the need for a full planning application. Fuse Energy supports homeowners on their journey to energy independence by providing competitive energy tariffs and smart tools for managing their energy use, including export tariffs for those with solar panels.

Understanding permitted development rights for solar panels

What are permitted development rights?

PDR are a set of rules that allow homeowners to make certain changes to their property without needing to apply for planning permission from their local council. These rights are designed to streamline the process for common home improvements, including the installation of solar panels, and are set out under the Town and Country Planning (General Permitted Development) (England) Order 2015 (as amended). Similar legislation applies in Scotland and Wales.

General conditions for residential solar

For most domestic solar panel installations in England and Wales, you will not need full planning permission if your installation meets specific conditions. These conditions primarily focus on minimising the visual impact on the building and the surrounding area.

Roof-mounted solar panel regulations

When installing solar panels on a pitched roof, they must not protrude more than 200mm from the roof slope or wall surface. The panels also cannot be installed above the highest part of the roof, excluding the chimney. For flat roofs, new regulations introduced in November 2023 allow panels to extend up to 600mm above the roofline without requiring planning permission. It is crucial that panels are sited, as far as practicable, to minimise their effect on the external appearance of the building and the amenity of the area.

When planning permission is required for solar panels

While many solar installations fall under PDR, there are specific scenarios where you will need to apply for full planning permission. Ignoring these can lead to costly removal orders.

Exceeding permitted development limits

If your proposed solar panel installation does not meet the general conditions for PDR, such as exceeding the specified protrusion limits or being installed above the roof's highest point, you will need to seek planning permission.

Impact on neighbouring properties

Although not explicitly covered by PDR for solar, planning authorities may consider the impact of an installation on neighbouring properties, particularly concerning glare or significant visual intrusion. While not a direct PDR trigger, it is a factor that can influence planning decisions if an application becomes necessary.

Other specific circumstances

Planning permission is also likely to be required if your property is a flat (as opposed to a house), as PDR rules can differ, or if there are specific local planning restrictions in place. Always check with your local planning authority if you are unsure.

Special considerations: conservation areas and listed buildings

Properties in sensitive locations like conservation areas or listed buildings have stricter rules to preserve their character and appearance.

Solar panels in conservation areas

You can install solar panels in conservation areas, but with additional restrictions. Generally, panels are permitted development in most conservation areas, but they must not be installed on a wall facing a highway or on a roof slope that forms part of the principal or side elevation of the dwelling and fronts a highway. If your roof faces away from the road, roof-mounted panels are generally fine under permitted development. However, if the panels are visible from the highway, planning consent may be required.

Listed building consent for solar

Installing solar panels on a listed building almost always requires full planning permission and listed building consent. Listed buildings have legal protection due to their historical or architectural significance, meaning any alterations must preserve their character. The application will need to demonstrate how the panels will affect the building's character, how they will be installed, and how they will fit with the existing structure. Discreet placement in less visible areas is often key to approval.

Navigating aesthetic concerns

For properties in conservation areas or listed buildings, the visual impact of solar panels is a primary concern. Local authorities will assess the colour, finish, and arrangement of the panels to ensure they complement the building's aesthetics. Low-profile panels or solar tiles, and careful positioning to minimise visibility, can improve the chances of approval.

Ground-mounted solar panels: rules and requirements

Ground-mounted solar panels follow different rules from rooftop systems, as they affect land use and visibility.

Permitted development for ground-mounted systems

Ground-mounted solar panels are considered permitted development if they meet certain conditions. You can generally install one ground-mounted system without planning permission if it is no more than 4 metres high and is at least 5 metres from any boundary. The total panel area must also be less than 9 square metres.

Size and location restrictions

If a ground-mounted solar panel system is larger than 9 square metres, or if it is less than 5 metres from a property boundary, it will require planning permission. Additionally, if the system is in a conservation area or World Heritage Site and is visible from a highway, planning permission will be needed.

Agricultural solar panel considerations

For agricultural buildings or larger properties, ground-mounted systems can be an effective option where space is not a constraint. However, larger commercial ground systems almost always need consent as they typically exceed the 9 square metre limit for permitted development. Encouraging efficient land use, such as combining the space with grazing or efforts to increase wildlife, can be beneficial for securing permission.

The planning application process and building regulations

Understanding the distinction between planning permission and Building Regulations is crucial for a smooth installation.

Submitting a planning application

If your solar panel installation requires planning permission, you will need to submit an application to your local planning authority. This is typically done online through the Planning Portal. The application usually includes a completed form specific to your local authority and a plan showing the location of your property and the proposed solar panels. The process can take several weeks.

The role of building regulations

Planning permission is distinct from Building Regulations, which ensure the structural integrity and safety of the installation. Building Regulations approval is always required for solar panel installations to ensure structural safety and electrical compliance, regardless of planning permission status. Key areas of concern include structural safety (Part A) and electrical safety (Part P). Your installer must assess whether your roof can support the additional weight of the panels and ensure all electrical connections are safe.

Ensuring compliance and safety

It is also important to notify your Distribution Network Operator (DNO) of any installation. If your solar system is rated under 3.68kW per phase, it falls under Engineering Recommendation G98, and your installer notifies your DNO within 28 days of commissioning. Anything above that threshold falls under G99, and the application goes in before the system is connected.

Local authority guidance and Article 4 Directions

Local planning authorities play a key role in interpreting and enforcing planning rules.

Consulting your local council

It is always best practice to check with your local planning authority (council) to confirm the current legislation and any specific conditions that apply to your property. They can provide guidance on whether your property is in a conservation area, a listed building, or if any Article 4 Directions are in place.

Understanding Article 4 Directions

Article 4 Directions are issued by local authorities and can remove PDR in specific areas, such as conservation areas, to protect their character. If an Article 4 Direction applies to your property, you will need to submit a planning application even for works that would normally be permitted development. Your solicitor should have informed you if an Article 4 Direction exists when you purchased your property, but you can always check with your local planning authority.

Appealing a planning decision

If a planning application is refused, you generally have the right to appeal the decision to the Planning Inspectorate. This process involves submitting a formal appeal, which will then be considered by an independent inspector.

Understanding the requirements for solar panel installation can seem complex, but getting it right ensures a smooth process and compliance with regulations. Once your solar panels are installed, Fuse Energy can help you manage your energy effectively. We offer clear pricing, real-time usage data through our app, and 24/7 human customer support to help you make the most of your home energy.