Agricultural Solar Southampton & Hampshire: Farm Solar Installation Guide 2026

Hampshire is one of the UK’s most agriculturally varied counties, stretching from the intensively farmed chalk downland of the North Wessex Downs to the lowland pastures of the New Forest fringe and the market gardens of the Test and Itchen valleys. The county gets some of England’s better solar yields — PVGIS estimates about 1,055 kWh a year per kW of south-facing panels on a 30° roof near Southampton.

The Southampton and Hampshire area has seen rapid growth in agricultural solar adoption since 2022. Proximity to the south coast, good installer competition, and a farming community that has been quick to recognise the economics have together driven installation rates well above the national average for rural counties.

Hampshire’s Farming Sectors and Solar Opportunity

Arable Farms — North Hampshire and the Test Valley

North Hampshire, including the areas around Andover, Basingstoke, and Whitchurch, is predominantly arable. The Test Valley corridor from Stockbridge northward carries large estate farms with substantial grain handling infrastructure. Solar installations on modern grain store roofs in this region consistently achieve 90,000–140,000 kWh per year for 100–150kWp systems.

Dairy and Livestock — South Hampshire and New Forest Fringe

The gentler, more pastoral landscapes south of Winchester and around the New Forest fringe support dairy cattle and beef finishing operations. These farms have consistent electricity demands with good seasonal alignment with solar generation. A 50kWp system on a dairy unit near Romsey or Lyndhurst typically achieves 45,000–48,000 kWh annually.

Horticultural and Market Garden Businesses — Southampton Area

The intensively farmed land around Southampton, Eastleigh, and the Meon Valley supports significant horticultural production including salad crops, soft fruit, and protected growing under glass and polythene. These operations carry high electricity loads that align well with summer solar generation peaks, making them strong candidates for both solar and battery storage investment.

Agricultural Solar Costs in Hampshire

Hampshire benefits from strong installer competition, particularly in the Southampton and Winchester areas. The only official benchmark is the DESNZ Solar PV cost data for 2025/26: a median installed price of about £1,262 per kW for 10–50 kW systems (Great Britain; including VAT where charged; excluding batteries). There is no official series above 50 kW.

Hampshire’s above-average solar irradiance means systems generate more per kWp than UK national averages, improving projected returns. A 100kWp system in Hampshire typically generates 90,000–95,000 kWh annually — approximately 5–10% more than an equivalent system in the Midlands or North.

Grants for Hampshire Farms

No grant for solar panels on farms is open in England. This is where each route stands for Hampshire farms:

• Improving Farm Productivity grant (England): Round 2 paid up to 25% of eligible costs for panels on farm-building rooftops or irrigation reservoirs (for solar, £15,000 minimum to £100,000 maximum; ground-based arrays excluded). Full applications closed on 31 July 2025 and no further round has been announced.

• Sustainable Farming Incentive (SFI): SFI has no solar action, and land under a solar array has its own Rural Payments Agency land-use code (UT01), which the RPA lists as a non-agricultural use.

• Smart Export Guarantee: Revenue on grid export through SSEN’s southern area network.

Choosing an installer in Southampton and Hampshire

This site is an independent guide published by SEO Dons Ltd and names no installer. Whoever you shortlist for a farm in Southampton and Hampshire: check them on the MCS register, ask for two farm references you can call, ask how they handle biosecurity and roof structure, and compare itemised written quotes against the DESNZ median of £1,262 per kW for 10–50 kW systems. Our guide to choosing a farm solar installer lists the twelve questions to ask.

Planning Considerations for Hampshire Farm Solar

Hampshire contains two National Parks — the South Downs and the New Forest — along with areas of outstanding natural beauty and heritage coast designations along the Solent. Agricultural solar in or adjacent to these areas requires careful planning engagement. The national parks have their own planning authorities (South Downs National Park Authority and New Forest National Park Authority) and apply more restrictive policies to visible solar installations.

For farms outside designated areas — the majority of agricultural land in Hampshire — standard permitted development rights apply, and roof panels on farm buildings keep them inside the National Parks and AONBs too, where the only extra Class J restriction is on panels fixed to a wall that fronts a highway. Roof-mounted installations on existing agricultural buildings require no planning application provided the standard conditions are met; above 50 kW, the council’s or National Park Authority’s prior approval on design and glare is needed.

---

Ready to get a quote for your farm? Get a free quote study →

Related guides

• Farm solar in Hampshire — local DNO, planning notes and typical system sizes for your county.
• Agricultural solar panel costs in 2026
• Uk farm solar grants & funding
• How to choose an agricultural solar installer