£14.2B in Annual Savings from Rooftop Solar Across the UK
The UK's Sunlight Salary Index
Assessing the value of rooftop solar across the UK
United Kingdom
A National Distributed Rooftop Asset
£14.2bn
Potential annual electricity bill savings across the UK
If more than 15 million analysed rooftops adopted optimised solar and battery systems, UK households could save an estimated £14.2bn a year.
The Four UK Nations
One Nationwide Opportunity
Avg £800+
Average annual bill savings in every UK country
Every UK country averages more than £800 in annual bill savings, showing meaningful solar and storage value nationwide—even under grey skies.
South East England vs Scotland's Highlands & Islands
A Clear North-South Rooftop Value Split
£991 vs £819
Gap in estimated average annual bill savings between the highest and lowest performing regions in the UK
South East England averages an estimated £991 a year compared to £819 a year in Scotland's Highlands & Islands—a £172 gap driven largely by available solar resource.
Northern Ireland
The Coastal–Inland Weather Exception
£958 vs £883
Annual savings gap between leading eastern and western/inland districts
Northern Ireland breaks the wider UK’s north–south pattern. Its strongest returns cluster around the east coast, while Atlantic weather brings more cloud cover and rainfall to western and inland districts.
Southern England
Southern England’s £1,000-a-Year Rooftop Value Cluster
Avg £1,000+
Annual savings reached by every district in England’s Top 10
England’s strongest district-level results are concentrated mainly in the south. Every district in its annual-savings Top 10 reaches approximately £1,000 or more per year, forming a clear high-value rooftop cluster.
Torbay, England
The UK’s All-Metric District Champion
7.04 Years
The UK’s shortest average payback period, plus #1 across all five financial metrics
Long descriptor update to: Torbay ranks first across all five district-level financial metrics: an estimated £1,069 in annual bill savings, 7.04-year payback period, 12.13% IRR, £2,769 in 10-year returns and £13,222 in 20-year returns.
Emily: Home Solar Potential Explorer
AI Valuation EngineYOUR ROOF, NOT JUST THE NATIONAL AVERAGE
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MARKET INTELLIGENCE
Solar Asset Valuation Rankings
Compare rooftop solar and storage investment performance across UK Local Authority Districts.
| Rank | Region / Node | 10Y Asset Premium | 20Y Asset Premium | |
|---|---|---|---|---|
| #1 | Torbay | £2,769 | £13,222 | |
| #2 | Plymouth | £2,553 | £12,798 | |
| #3 | Maidstone | £2,554 | £12,795 | |
| #4 | Ashford | £2,543 | £12,774 | |
| #5 | Isle of Wight | £2,528 | £12,746 | |
| #6 | Dartford | £2,491 | £12,668 | |
| #7 | Gravesham | £2,480 | £12,647 | |
| #8 | Lewes | £2,453 | £12,595 | |
| #9 | Bournemouth, Christchurch and Poole | £2,448 | £12,590 | |
| #10 | Rother | £2,444 | £12,576 |
The Rooftop Valuation Report · UK Edition
value dataset
Proof of Calculation
SYSTEM ARCHITECTURE
LAYER 1: DATA ACQUISITION
High-Res Geospatial Telemetry
We stream high-fidelity orthorectified imagery from premium global providers, deploying deep learning object detection to autonomously isolate structural footprints and extract detailed spatial contours.
- High-Fidelity Aerial Imagery
- Neural Feature Extraction
- Geometric Footprint Mapping
LAYER 2: AI VISION MODELING
3D Vision & Reconstruction Engine
Powered by Large Vision Models (LVM), our engine instantly segments shading obstacles and analyzes roof pitch and azimuth to accurately calculate the effective net usable area.
- Semantic Vectorization
- AI Obstacle Segmentation
- Visual Anomaly Detection
LAYER 3: DECISION & FINANCIAL ENGINE
Automated Scheme Optimisation
We synthesize regulatory constraints, dynamic battery storage sizing, and real-time market data to output your optimal system configuration and 20-year cash flow projections.
- Heuristic Scheme Design
- Dynamic Storage Sizing
- 20-Year IRR & Cash Flow