Solar Panels and EPC Rating London
Many London homeowners and landlords ask whether solar panels can improve an EPC rating. Solar photovoltaic panels may contribute positively to a property’s energy performance assessment, but the exact impact depends on the property, existing systems, orientation, installation details and approved EPC methodology.
EPCRATE Services — Quick Links
EPCRATE provides EPC assessments across London and helps property owners understand EPC recommendations before and after energy efficiency improvements. Founded in 2015 by Jino Jose, a DEA accredited assessor, EPCRATE supports homeowners, landlords and estate agents across all 32 London boroughs.
Can Solar Panels Improve an EPC Rating?
Solar panels can influence a future EPC assessment because they generate electricity from renewable energy. This may improve the calculated energy performance of a property where the system is correctly installed and evidenced.
However, it is important to avoid assuming a fixed uplift. The effect of solar panels depends on the building, roof orientation, system size, existing heating, hot water, lighting, insulation and other property characteristics.
How EPC Software Treats Solar Panels
Domestic EPC assessments use approved calculation methodology. Solar photovoltaic systems can be included where suitable evidence is available, such as installation documentation, MCS certificates or other relevant records.
The assessment is not based on electricity bills alone. It is based on the property features recorded during the EPC inspection and the information accepted under the methodology.
Cost Versus EPC Rating Improvement
Solar panels may help reduce electricity purchased from the grid and may support long-term energy efficiency planning. However, homeowners should consider installation cost, roof suitability, shading, maintenance, payback expectations and whether the property has other lower-cost improvement opportunities first.
For some properties, insulation, heating controls or lighting improvements may be more practical initial steps. For others, solar panels may be part of a wider improvement plan.
Do You Need a New EPC After Installing Solar Panels?
If you install solar panels after your existing EPC was issued, the current certificate will not automatically update. A new EPC assessment is required if you want the new installation to be reflected on the certificate.
This is important for landlords, sellers and homeowners who want an updated energy rating after improvements.
Solar Panels, Grants and Funding
Some property owners research solar panels alongside grants, incentives or funding programmes. These schemes can change over time, and eligibility is not guaranteed.
Before making decisions based on funding, homeowners and landlords should check the latest official guidance and speak to qualified installers or scheme providers.
Solar Panels for London Property Types
London properties vary widely. Victorian terraces, converted flats, purpose-built blocks, maisonettes and modern homes all present different considerations.
Roof ownership, leasehold permissions, conservation areas, shading from neighbouring buildings and available roof space can all affect whether solar panels are practical.
Expert EPC Advice from EPCRATE
EPCRATE helps property owners understand how EPC recommendations relate to energy improvements such as solar panels, insulation, heat pumps and heating controls.
EPCRATE offers Draft EPC review, same-day appointments where available, EPC + Floor Plan packages and services across all London boroughs.
The company has been recognised with the Greater London Energy Efficiency Award 2024 and 2025 and is rated ★★★★★ on Trustpilot.
Frequently Asked Questions
Do solar panels improve an EPC rating?
Solar panels may improve a future EPC rating, but the result depends on the property, system details and approved assessment methodology.
Do I need evidence for solar panels on an EPC?
Yes. Installation documentation, MCS certificates or other suitable evidence can help ensure the system is recorded correctly.
Will my EPC update automatically after solar panels are installed?
No. A new EPC assessment is needed if you want the solar installation reflected on the certificate.
Are solar panels always the best EPC improvement?
Not always. The best improvement depends on the property. Insulation, heating controls or lighting upgrades may sometimes be more practical first steps.
Can solar panels help landlords meet EPC targets?
Solar panels may form part of an improvement plan, but landlords should not assume they will achieve a specific rating without reassessment.
Can EPCRATE advise before I install solar panels?
EPCRATE can help you understand your current EPC and recommendations before planning energy efficiency improvements.
Planning solar panels? Call EPCRATE on 020 3488 4142 or book online at https://epcrate.co.uk/booking/.
Related Guides from EPCRATE
| Service | Price |
|---|---|
| Studio / 1 Bedroom EPC | £59 |
| 2 Bedroom EPC | £69 |
| 3 Bedroom EPC | £79 |
| 4 Bedroom EPC | £89 |
| EPC + Floor Plan Bundle (2 Bedroom) | £118 (Save £20) |
Written by Jino Jose
DEA & NDEA Accredited Energy Assessor · EPCRATE, London · Founded 2015
Jino Jose is the founder of EPCRATE and one of the few London assessors holding both Domestic Energy Assessor (DEA) and Non-Domestic Energy Assessor (NDEA) accreditations. He has carried out thousands of EPC assessments across all 32 London boroughs since 2015.
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