Solar PV insurance for UK farm buildings

For UK farms with solar PV, proper insurance coverage is essential. Failure to declare the PV system to your insurer can void cover for both the PV and (in some cases) the entire building. Premium impact is typically minimal — but the declaration process must be followed properly.

Standard farm insurance providers and PV cover

The major UK farm insurance providers all cover solar PV when properly declared:

NFU Mutual: standard farm insurance products include PV cover when declared. Premium uplift typically 1-3% of system value annually.

Aviva: commercial property insurance covers solar PV when declared. Multiple Aviva products available depending on overall farm cover level.

ARAG Agricultural: specific farm-renewable energy cover available with detailed solar PV terms.

AXA Commercial: commercial property products cover solar PV when declared.

Lawsons: specialist agricultural insurance with PV cover.

All major providers require declaration at install. Failure to declare may void cover.

What standard insurance covers

Typical UK farm solar PV insurance covers:

• Storm damage (wind, hail, lightning)
• Theft (unusual but possible on remote ground-mount sites)
• Vandalism (rare on rooftop sites; more common on ground-mount)
• Fire (extremely rare cause; covered when occurring)
• Damage from external sources (vehicle impact on ground-mount fence; falling trees)
• Consequential loss of income from system being out of service (where this is included in the cover)

What insurance typically doesn’t cover

• Manufacturer defects (covered by manufacturer warranty)
• Workmanship defects within the warranty period (covered by installer workmanship warranty + IWA insurance-backed warranty)
• Wear and tear or normal degradation
• Pre-existing damage at install
• Operational misuse (rare)

Declaration process at install

At commissioning, we provide a standard insurance declaration letter for the farm to send to their insurer. The letter includes: system commissioning date; system value (for buildings insurance update); system specification (kW, panel and inverter make/model, location); installer details (MCS certification); IWA-backed workmanship warranty registration; specific fire-protection measures (DC AFCI, reduced-voltage mode if applicable).

The insurer typically responds within 4-6 weeks confirming the cover update and any premium impact. Most insurers don’t require separate site inspection for the PV system.

Premium impact in practice

The premium uplift for declaring a PV system varies by insurer and overall policy structure, but typical scenarios:

• Small install on existing buildings (sub-100 kW): premium uplift £100-£400/year
• Medium install (100-300 kW): premium uplift £400-£1,200/year
• Large install (300+ kW) or new building infrastructure: premium uplift £1,200-£3,500/year

As proportion of system value, premium uplift is typically 1-3% per year — comparable to normal building insurance cost ratios.

Claims process

Claims process for PV damage: alarm triggered via monitoring portal (or visible damage discovered); incident reported to insurer typically within 24-48 hours of discovery; insurer assigns claims handler; on-site assessment by insurer’s nominated surveyor (usually 1-2 weeks); claim approval and contractor authorisation; repair work proceeds typically by original installer.

The IWA-backed workmanship warranty (years 1-10) provides parallel cover for installer-related issues — sometimes both insurance and IWA apply to the same incident; sometimes only one applies. We coordinate during claims as needed.

Special considerations for large installs

For very large farm installations (above 500 kW), some scenarios warrant additional consideration:

Business interruption cover: where the PV is critical to operations (e.g., dairy parlour critical loads), business interruption cover protects against revenue loss during PV downtime.

Public liability uplift: ground-mount installations on public-accessible land may need uplifted public liability cover.

Professional indemnity for installer scope: for very large installs the installer’s PI cover may be reviewed; this is typically handled at installation contract level, not by farm insurance.

Practical recommendations

For every UK farm commissioning solar PV: notify insurer pre-install with system specification; submit standard declaration letter at commissioning; confirm premium impact and updated cover; retain documentation of declaration for future reference (particularly if changing insurers); review cover annually as system ages or expands.

We provide the standard insurance declaration letter at commissioning for every install. Send a copy to your insurer within 30 days of system energisation.