Solar Panels for Flats and Apartments: Is It Possible in the UK?

Can Flats and Apartments Go Solar?

The short answer is yes—but the route is considerably more complex than for a detached or semi-detached house.

In the UK, approximately 22% of households live in flats and apartments, yet the overwhelming majority of solar guidance targets homeowners with freehold houses.

This creates a significant gap in practical information for flat owners who want to reduce their electricity bills and carbon footprint.

At UK Solar Advice, we regularly hear from flat owners who have been told solar simply isn't an option for them.

That isn't accurate, though the pathway does require navigating some genuine challenges: shared roofs, leasehold restrictions, planning permissions, and split incentive problems where neither landlord nor tenant has full control over the building fabric.

This article examines what's actually possible for UK flat owners in 2024, with practical steps you can take regardless of your tenure situation.

Understanding the UK Flat Ownership Structure

Before examining solar options, flat owners need to understand their legal and structural position.

The vast majority of UK flats are leasehold, meaning you own the property for a fixed term (often 99 or 125 years) but not the land or building structure.

The freeholder—or management company—typically retains responsibility for the roof, external walls, and structural elements.

This ownership structure creates the central challenge for solar: who has the right to install panels on a roof that multiple leaseholders may share, and who bears responsibility for maintenance and insurance?

The good news is that the law has shifted considerably in recent years.

The Leasehold and Freehold Reform Act 2024 (receiving Royal Assent but provisions still being implemented) and existing legislation have strengthened flat owners' rights regarding building alterations.

Understanding these rights is essential before approaching your freeholder or management company.

Solar Solutions Available for Flats

Roof-Mounted Systems: The Complicated Route

Installing panels directly on a flat's roof is technically possible but requires navigating several hurdles.

The key questions are:

• Do you have a屋顶 that serves only your flat, or is it a shared structure?
• Does your lease explicitly prohibit external modifications?
• Is your freeholder willing to grant permission?
• What is the structural condition of the roof?

If your flat occupies the entire top floor and you have a private roof, the process resembles a house installation.

More commonly, flat roofs are shared between multiple properties, requiring collective decision-making through the freeholder or, in some cases, a right-to-manage company.

"We spent 18 months getting permission from our freeholder for roof solar.

It was frustrating, but the saving of £400 per year on our electricity bill has made it worthwhile.

The key was demonstrating the benefit to the wider building through reduced energy costs for all communal areas." — Resident, Manchester apartment block, 2023

Balcony and Standoff Systems

For flat owners who cannot access the roof, balcony-mounted solar represents a practical and increasingly popular alternative.

These systems use frames that attach to balcony railings or stands that sit on balcony floors without drilling into the building structure.

A typical balcony system in the UK produces between 300W and 600W—significantly less than a full roof installation but enough to meaningfully reduce daytime electricity consumption.

A 400W system in southern England can generate around 350-400kWh annually, worth approximately £130-£160 at current standing charge-included tariffs.

Shared Ownership and Community Solar

Community solar schemes allow flat owners who cannot install their own panels to subscribe to a local solar farm and receive credits on their electricity bills.

Several operators across the UK offer this service, including SolarTogether in Brighton, BaySolar in Cumbria, and various schemes operated by local authorities.

Under the Smart Export Guarantee, you receive payments for exported electricity.

However, community solar subscribers typically receive credits rather than direct SEG payments, so the economics differ from direct ownership.

The advantage is zero upfront cost and no property modifications required.

UK Grants and Financial Support: What's Actually Available

The grant landscape for flat solar is considerably more limited than for houses, but options do exist for eligible households.

ECO4: Limited Applicability

The Energy Company Obligation (ECO4) scheme runs until 2026 and primarily targets low-income households and those receiving means-tested benefits.

ECO4 focuses on insulation and heating improvements, with solar thermal more commonly supported than PV.

For flat owners, the scheme has additional complexity: the property must meet certain EPC requirements, and the benefit must apply to the property rather than individual tenants in shared buildings.

The ECO4 Flex pathway allows local authorities to refer households based on composite indicators of vulnerability, which may capture flat owners in poorly insulated blocks.

However, obtaining a full ECO4 solar installation for a flat remains challenging compared to houses.

Smart Export Guarantee (SEG)

All UK energy suppliers with over 150,000 customers must offer SEG tariffs.

For flat owners with qualifying installations, this provides ongoing payments for surplus electricity exported to the grid.

Current market rates from major suppliers range from 3p to 10p per kWh, with Octopus Energy, British Gas, and EDF among the more competitive options.

VAT Rates

Solar panel installations benefit from a reduced VAT rate of 5% for residential properties.

This applies whether you own a house or flat, making the installation cost approximately 17% cheaper than at standard rate.

However, if your flat is considered a commercial or mixed-use property, standard 20% VAT may apply—verify your property's classification with your installer before committing.

The Boiler Upgrade Scheme: Not Relevant

The Boiler Upgrade Scheme provides grants of £7,500 for heat pumps but does not cover solar panels directly.

If you're considering solar alongside a heat pump installation (increasingly common in flats with communal heating systems), the BUS grant can help with the heat pump component, potentially freeing budget for solar separately.

Planning Permission and Regulatory Requirements

Permitted Development Rights

For roof-mounted solar on flats, permitted development rights are more restricted than for houses.

Solar panels on a flat's roof may require planning permission, particularly if:

• The building is listed or in a conservation area
• The panels are visible from the street at ground level
• The installation exceeds size thresholds specified in your local planning authority
• Your lease explicitly prohibits alterations without planning consent

Contact your local planning authority before proceeding.

Many councils publish specific guidance for solar installations that clarify requirements for flats versus houses.

Freeholder Consent

Even where planning permission isn't required, your lease almost certainly requires freeholder consent for significant alterations.

Applications should include:

• Technical specifications of the proposed installation
• Evidence of MCS-certified installer and compliance
• Structural assessment confirming roof suitability
• Details of how the installation affects other leaseholders
• Plans for removal and reinstatement at lease end

Freeholders are sometimes reluctant to approve alterations due to liability concerns.

Offering to cover the cost of structural surveys and to include provisions for removal at your expense can significantly improve your chances.

DNO Approval and G99 Forms

Any solar installation above 3.68kW requires notification to your Distribution Network Operator (DNO) via the G99 form.

This includes most flat roof installations.

The DNO must confirm your installation won't cause grid stability issues.

For smaller balcony systems under 3.68kW, G99 notification may still be required depending on your DNO's specific requirements.

Your MCS-certified installer will handle this process, but ensure they confirm their approach before installation commences.

A Practical Framework for Flat Owners

Based on our analysis of hundreds of flat solar enquiries, we recommend the following decision framework:

Realistic Payback Calculations

Setting honest expectations is essential.

Solar payback for flats is typically slower than for houses due to:

• Lower generation potential (orientation, shading from adjacent buildings)
• Higher installation costs for complex roof access situations
• Additional costs for lease modifications and permissions
• Smaller system sizes limiting absolute savings

The Feed-in Tariff (FIT) scheme, which closed to new applicants in March 2019, continues to pay established recipients for their historical installations.

If your flat was fitted under the original FIT scheme, you may be receiving payments until 2034 or beyond.

However, new flat installations are entirely SEG-dependent.

EPC Ratings and Property Value Considerations

Solar installations can improve a property's EPC rating, which matters for flats in several ways.

Minimum EPC requirements for private rented properties will reach band C by 2030 under current trajectories, and solar can contribute to achieving this threshold.

Additionally, some mortgage providers now offer preferential rates for properties with solar installations, and the improvements may enhance saleability.

For leasehold flats, the impact on your lease terms is worth considering.

Some leases specify that alterations become the freeholder's property; others allow removal.

Your conveyancing solicitor should clarify this before installation.

What to Do This Week

If you've read this far, you now have more information than most flat owners considering solar.

Here are concrete next steps:

• Pull your title documents — Check the Land Registry for your lease and look for clauses relating to external alterations
• Contact your management company — Inquire about their policy on solar installations without committing to anything
• Get a site assessment — Many MCS installers offer free remote surveys; share your address and photos for a generation estimate
• Research community solar — Check if a scheme operates in your area; this requires zero property modification
• Check SEG tariffs — Compare current rates if you have an existing installation or are planning one

The Bottom Line

Solar panels for UK flats are not only possible but, for the right situation, genuinely worthwhile.

The route requires more patience and paperwork than for houses, but the underlying technology and economics work equally well.

Balcony systems offer the fastest route to solar for those who cannot access the roof.

Collective roof installations, while complex, can serve entire buildings and may appeal to management companies looking to reduce communal energy costs.

Community solar provides an entirely permission-free pathway for those who prefer not to engage with building management.

The solar landscape continues to evolve.

SEG rates fluctuate with wholesale prices, planning authorities are increasingly streamlining solar applications, and the regulatory position of flat owners continues to strengthen.

Whatever your tenure situation, the barriers are lower than they have ever been—and with electricity prices remaining elevated by historical standards, the economics of even modest solar generation look increasingly favourable.