Farming around Penzance
Penzance and west Cornwall enjoy the UK's highest solar irradiance — 1,140 kWh/m²/yr, materially higher than the national average. The Penwith peninsula supports mixed beef, sheep and dairy farms on relatively poor land that benefits hugely from solar diversification income. Cornwall AONB (the entire Lizard and most of Penwith) constrains ground-mount but rooftop on existing barns is permitted development. The Cornish climate, mild winters and long shoulder seasons mean exceptional year-round generation profiles. Many farms in this catchment pair solar with rural-tourism income (glamping, holiday cottages, farm shops) — visitor EV chargers paired with solar are increasingly common. Typical install: 30-150 kWp barn-roof with battery.
Local installation profile
- County: Cornwall
- Local authority: Cornwall Council
- DNO: NGED — typical G99 turnaround 8-14 weeks
- Solar irradiance: 1,140 kWh/m²/yr
- Population: 21,000
- Neighbouring areas covered: St Just, Hayle, Marazion, Newlyn, Helston
- Nearest installation hub: Bristol
Grants and tax relief available for Penzance farms
- ✓ Improving Farm Productivity grant (England) — 25% towards solar capital costs; the FETF closed for good on 28 April 2026. See 2026 calendar.
- ✓ 100% Annual Investment Allowance — write down residual cost in year one
- ✓ Smart Export Guarantee — roughly 4–12p/kWh, as at July 2026, for surplus generation
- ✓ SFI Pollinator Package — agrivoltaic ground cover £600-800/ha/year
Typical farm solar projects around Penzance
| Farm type | System | Gross | After AIA + grant | Payback |
|---|---|---|---|---|
| Dairy (150-300 head) | 65-150 kWp | £45-105k | £24-56k | 1.8-2.4 yr |
| Arable (400-1,200 ac) | 50-200 kWp | £35-140k | £19-75k | 2.0-2.6 yr |
| Free-range poultry (16k bird) | 80-150 kWp | £55-105k | £29-56k | 1.5-1.9 yr |
| Mixed (200-500 ac) | 30-75 kWp | £21-53k | £11-28k | 1.7-2.2 yr |
Penzance farm solar — what's included in every quote
- ✓ Free desk feasibility from your half-hourly meter data (3 working days)
- ✓ On-site structural and electrical survey
- ✓ grant application written and submitted
- ✓ NGED G99 grid connection application managed end-to-end
- ✓ MCS-certified Tier-1 panels (Trina, JA Solar, REC, SunPower)
- ✓ Asbestos cement roofing assessed; licensed removal coordinated if needed
- ✓ 25-year panel warranty, 10-year inverter, 5-year workmanship
- ✓ IWA insurance-backed warranty for 10 years even if we cease trading
- ✓ Annual maintenance contracts from £250/year