Explore how homes in Greater London are performing with home solar panel installation. Real comparison data reveals typical system sizes, generation levels, and the level of savings being achieved locally.
Most homes in Greater London are currently saving between £393 and £3142 per year based on real comparison data. Typical systems are achieving around £908 annually, while high-performing installations are reaching up to £3142 when optimised for roof size, orientation, and usage.
Solar performance in Greater London depends heavily on roof orientation, pitch and shading. Properties with south-facing or east-west roofs typically achieve the strongest generation results, while shading from nearby buildings or trees can reduce performance.
Based on local comparison data, the average system in Greater London generates around 4128 kWh per year. Strong-performing systems are reaching up to 14283 kWh, with most homes installing around 17 panels depending on available roof space.
Local comparisons
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Real comparison activity from this area
Typical generation
4128 kWh
Average projected yearly output
Best recorded result
14283 kWh
Top projected generation in your local dataset
Typical system size
17 panels
Average setup size being compared nearby
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Greater London solar opportunity score
Based on real comparison activity, system performance, and local demand signals.
Why Greater London scores this level
Based on current data, properties in Greater London are typically generating around 4128 kWh per year from solar installations.
Local comparison activity shows an average system size of 17 panels, with strong potential savings across the area.
The opportunity score reflects a combination of:
Planning considerations in Greater London
Most residential solar installations in Greater London fall under permitted development and do not require planning permission. However, properties within conservation areas or listed buildings may require approval, particularly where panels are visible from public viewpoints.
Local trends indicate that many homes in Greater London are opting for larger systems to maximise long-term savings, with east-west split systems becoming increasingly popular to extend generation across more hours of the day.
This map highlights where solar comparisons are happening locally. Brighter areas indicate higher demand for solar panel installation.
Typical system sizes in Greater London
Estimated savings distribution
Annual generation distribution
Estimated return over time
Solar interest trend in Greater London
Average system size
17 panels
Based on current local comparison activity.
Most common panel class
400W
Derived from the strongest panel entries in the local dataset.
Best recorded generation
14283 kWh
Highest projected annual generation currently in the local page data.
Roof orientation
33% south
East/West: 55%
Mixed: 12%
Flat: 0%
What people in Greater London want
This data comes from real residential solar comparisons in Greater London, showing how different system sizes and panel types perform across local homes.
If you are planning home solar panel installation in Greater London, these insights help you understand what system sizes are being compared and what generation levels are achievable.
Based on real comparison activity from properties in this area.
| Panel type | Typical setup | Avg annual generation |
|---|---|---|
| 48 panel system High-efficiency panel | 48 panels | 14284 kWh |
| 30 panel system High-efficiency panel | 30 panels | 5607 kWh |
| 10 panel system High-efficiency panel | 10 panels | 3834 kWh |
| 7 panel system High-efficiency panel | 7 panels | 2556 kWh |
| 14 panel system High-efficiency panel | 14 panels | 2501 kWh |
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Estimated fit: 17 panels
Likely annual generation: 4128 kWh
Possible yearly savings: £908 / year
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79 College Rd, Harrow HA1 1BD, United Kingdom
21-23 Elmfield Rd, Bromley BR1 1LT, United Kingdom
Hill Business Park, Unit 6 Hampton, 221A High St, Hampton Hill, Twickenham TW12 1NP, United Kingdom
Most homes in Greater London generate around 4128 kWh per year, with typical savings of £908. Compare nearby locations to see how performance and system sizes vary across the area.
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