Do businesses need planning permission for renewable energy?

You want to install renewable energy for business on your site. But will your local planning authority let you?

Whether your business needs planning permission for a renewable project depends on the technology you're installing, where your premises are located and the scale of the project.

We explain what approvals you may need, when planning permission applies, and how to avoid costly delays before work begins.

In this article:

• Learn about planning permission requirements for renewable business energy.
• Understand what measures your business needs to take to generate electricity on site.
• Discover common mistakes to avoid during the planning process.

Do businesses always need planning permission?

No, not all renewable energy generation projects require planning permission.

Some commercial renewable energy installations require full planning permission and additional approvals, while others may fall under permitted development rights (PDR).

Permitted development rights are national grants of planning permission that allow specific building works to be carried out without requiring a full planning application.

Understanding the rules before investing can help you avoid delays, unexpected costs and unnecessary complications.

Renewable energy planning permission requirements

Planning requirements are nuanced and can change, so always check with your local planning authority before starting work.

Solar panels

• When planning permission is usually not required: Rooftop installations up to 1MW generation typically do not require planning permission.
• When permission is likely to be required: Ground-mounted units larger than 9m² usually require planning permission.
• Typical commercial considerations: Ensure your roof is suitable to host panels, whether you are in a conservation area or if the building is listed.

Wind turbines

• When planning permission is usually not required: Very rarely.
• When permission is likely to be required: Almost all turbines require full planning permission, which could take between 6-18 months for approval.
• Typical commercial considerations: The chosen location should frequently utilise wind speed greater than 5m/s.

Other renewable technologies

Planning requirements vary significantly depending on the technology, scale and location of the installation. Always seek advice before committing to a project.

Most other standard commercial infrastructure (biomass boilers, combined heat and power systems, microgrids) will require planning approval.

Small battery storage solutions do not require planning permission, but larger storage containers do.

Common planning permission mistakes

Planning delays are often caused by assumptions rather than the planning process itself. Avoid these common mistakes before your project begins.

• Assuming planning permission is never required: Don’t just assume your project falls under permitted development rights.
• Not checking listed building restrictions: Additional restrictions often apply to protected buildings and locations.
• Ignoring grid connection requirements: Securing planning permission does not automatically guarantee your local electricity network can support your installation.
• Starting work too early: Beginning installation before all approvals have been secured can result in enforcement action, delays and additional costs.
• Underestimating total costs: Planning, surveys, grid upgrades and ongoing maintenance should all be factored into the overall project budget from the outset.

What else should businesses consider?

Planning permission is just one key consideration ahead of installing renewable technology.

Before you begin hitching solar panels to your roof space or planting turbines in your field, ask yourself the following questions to understand whether the project is suitable:

• Can your roof really support the installation? Older roofs may require structural surveys before solar panels can be installed.
• Can the local grid handle your system? Larger installations may require grid connection upgrades before they can operate.
• Do you own the property - or have permission from the owner? If you lease your premises, you'll usually need your landlord's permission before making alterations.
• Will the total investment pay off? Consider installation costs, maintenance, expected savings and any available grants or incentives before committing.
• Will the system suit your business over the long term? A renewable energy project should support both your current operations and future growth plans.

This article continues our Renewable Energy Basics series. Now read...

How we can help

Renewable energy is helping businesses across the UK, but it's tricky to know where to start.

We get it. We can support you.

Troo exists to help businesses like yours make sense of their energy needs, simplify complex information and make smart decisions that lead to real change and reduced costs.

We are not here to sell you a quick fix. We're here to understand what matters to you, offer clear advice, and take ownership of the hard parts, so energy becomes one less thing to worry about.

Book a free energy health check today to explore renewable energy options for your business.