Wind vs Solar Energy Comparison Calculator
Compare annual energy output and cost from wind and solar at your location.
Find which renewable energy source suits your site better.
Both wind and solar are viable home renewable energy sources, but they suit different sites and climates. The best choice depends on your local wind speed and sunshine hours.
Complementary seasonal profiles: Solar panels produce most energy in summer (long days, high sun angle) and little in winter. Wind turbines often produce more in autumn and winter when storms are frequent. A combination of both smooths out seasonal variation — ideal for off-grid systems.
Cost comparison (UK, 2024–2025):
| System | Installed Cost | Annual Output | Cost per kWh |
|---|---|---|---|
| Solar (4 kW, 10 panels) | £5,000–£8,000 | 3,000–4,000 kWh | £0.10–£0.15 |
| Small wind (5 kW) | £15,000–£25,000 | 8,000–15,000 kWh | £0.12–£0.18 |
Siting requirements:
- Solar: South-facing roof, minimal shading — urban and rural suitable
- Wind: Open exposed site, 10+ m height, away from buildings and trees — rural only
- Average wind speed below 6 m/s: Solar almost always wins on cost
- Average wind speed above 8 m/s: Wind becomes competitive
Grid connection: Both wind and solar can be connected to the grid and export surplus power. In the UK, the Smart Export Guarantee (SEG) requires energy companies to pay for exported electricity. Rates vary (5–15p/kWh).
How we build and check this calculator
This calculator runs entirely in your browser, so the numbers you enter stay on your device. The math behind it is written by hand and tested against worked examples and standard references before the page goes live.
SuperGlobalCalculator is independently built and maintained. See how we build and verify our calculators.