Postcode-Specific Solar Analysis
Precise sunshine hours from UK historical weather data (30-year average)
Typical UK roof: 40-60m²
Ofgem cap: 27.03p (drops to 25.73p July 2025) | Octopus Agile: ~19p
Octopus 15p | British Gas 6.4p | E.ON 5.5p | Current average 12p
Battery Storage ROI Analysis
See how batteries save money through time-shifting: charge at cheap overnight rates, use during expensive peak times
Octopus Go: 7p (00:30-04:30) | Economy 7: varies by region
Your daytime electricity rate
Compare Different System Sizes
Based on your roof and usage, here's how different systems compare:
Please complete the Advanced Calculator first to see system comparisons based on your specific location and usage patterns.
Month-by-Month Analysis
Year 1 generation and savings by month
| Month | Generation (kWh) | Self-Use | Export | Savings |
|---|---|---|---|---|
| Please complete the Advanced Calculator first to see your monthly breakdown. | ||||
📄 Download Your Investment Analysis
Get a detailed breakdown of your solar investment with all calculations and recommendations
Your comprehensive report includes:
- ✓ Executive summary with key ROI metrics
- ✓ Month-by-month generation & savings breakdown
- ✓ Year-by-year financial projections (5 years detailed)
- ✓ System sizing recommendations for your roof
- ✓ Battery storage ROI analysis (if applicable)
- ✓ Installation checklist & next steps
Detailed summary report with your calculations and key recommendations