Solar Panels for Polytunnels and Greenhouses
Solar solutions for UK polytunnels and greenhouses. Semi-transparent panels, ground-mount arrays, heating offset. Free survey for horticultural operations.
Horticultural operations face unique solar challenges: growing structures need light transmission, yet the energy demands for heating, irrigation, and lighting are substantial. Modern solutions including semi-transparent panels, adjacent ground-mount arrays, and smart system design make solar highly viable for UK growers.
30-200kW
Typical System
4-6 Years
Payback Period
30-60%
Energy Offset
Solar Solutions for Growers
Horticultural operations benefit from multiple solar approaches, from building-mounted panels on pack houses to innovative semi-transparent panels integrated into growing structures.
Three Approaches to Horticultural Solar
Every horticultural operation is different. We assess your buildings, land, and energy profile to recommend the most effective solar strategy.
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Polytunnel and Greenhouse Solar FAQs
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Related Farm Building Solar Pages
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MCS Certified | 25-Year Warranty | Nationwide Coverage
Solar Panels for Polytunnels: Agrivoltaic and Adjacent Mounting
The ideal solar installation for soft fruit and vegetable polytunnel operations is not on top of the polytunnel itself — polytunnel structures are not generally designed to carry panel loads — but on adjacent agricultural buildings (packhouses, cold stores, machinery sheds) that power the polytunnel operation. This adjacent mounting strategy is increasingly common across Herefordshire, Kent, Suffolk and Lincolnshire's soft fruit growing areas.
However, purpose-designed agrivoltaic systems — solar panels on specially engineered structures above growing tunnels — are a growing technology. Several pilot installations in the UK have demonstrated that selected crops (strawberries, raspberries, salad crops) can grow successfully under partially shaded panel arrays, with panels covering 20-30% of growing area. The dual use of land for food production and electricity generation is particularly attractive where planning conditions restrict ground-mounted solar.
Solar Sizing for Polytunnel Farm Operations
| Farm Scale | Key Electricity Users | Recommended System | Annual Saving |
|---|---|---|---|
| 1-5 ha (small) | Packhouse, cold store, irrigation | 30-80 kWp | GBP6,600-GBP17,600 |
| 5-20 ha (medium) | Large packhouse, multiple cold rooms | 80-200 kWp | GBP17,600-GBP44,000 |
| 20-50 ha (large commercial) | Processing lines, multiple cold stores, EV fleet | 200-500 kWp | GBP44,000-GBP110,000 |
Estimates at 28p/kWh, 75% self-consumption.
DNO Connections for Rural Polytunnel Sites
Polytunnel farms are typically rural, connecting to the 11kV medium-voltage distribution network. Grid capacity at rural substations varies significantly. Your installer checks NGED, UKPN or SSEN network capacity maps at the survey stage and advises if grid reinforcement contributions are required. Many rural agricultural substations in the main growing regions (Kent, Lincolnshire, East Anglia, Herefordshire) have available capacity without reinforcement for systems up to 100 kWp.
- ✓Permitted development: agricultural buildings adjacent to polytunnels are covered by Class B GPDO
- ✓Agrivoltaic structures may require planning permission as they are not standard agricultural buildings
- ✓G98/G99 applications: your installer submits to regional DNO (NGED, UKPN, SSEN, Electricity North West)
- ✓Agricultural businesses qualify for full AIA tax relief on solar installation
- ✓SEG income for surplus generation adds to financial returns
Solar Panels for Polytunnels: Agrivoltaic and Adjacent Mounting
The ideal solar installation for soft fruit and vegetable polytunnel operations is not on top of the polytunnel itself — polytunnel structures are not generally designed to carry panel loads — but on adjacent agricultural buildings (packhouses, cold stores, machinery sheds) that power the polytunnel operation. This adjacent mounting strategy is increasingly common across Herefordshire, Kent, Suffolk and Lincolnshire's soft fruit growing areas.
However, purpose-designed agrivoltaic systems — solar panels on specially engineered structures above growing tunnels — are a growing technology. Several pilot installations in the UK have demonstrated that selected crops (strawberries, raspberries, salad crops) can grow successfully under partially shaded panel arrays, with panels covering 20-30% of growing area. The dual use of land for food production and electricity generation is particularly attractive where planning conditions restrict ground-mounted solar.
Solar Sizing for Polytunnel Farm Operations
| Farm Scale | Key Electricity Users | Recommended System | Annual Saving |
|---|---|---|---|
| 1-5 ha (small) | Packhouse, cold store, irrigation | 30-80 kWp | GBP6,600-GBP17,600 |
| 5-20 ha (medium) | Large packhouse, multiple cold rooms | 80-200 kWp | GBP17,600-GBP44,000 |
| 20-50 ha (large commercial) | Processing lines, multiple cold stores, EV fleet | 200-500 kWp | GBP44,000-GBP110,000 |
Estimates at 28p/kWh, 75% self-consumption.
DNO Connections for Rural Polytunnel Sites
Polytunnel farms are typically rural, connecting to the 11kV medium-voltage distribution network. Grid capacity at rural substations varies significantly. Your installer checks NGED, UKPN or SSEN network capacity maps at the survey stage and advises if grid reinforcement contributions are required. Many rural agricultural substations in the main growing regions (Kent, Lincolnshire, East Anglia, Herefordshire) have available capacity without reinforcement for systems up to 100 kWp.
- ✓Permitted development: agricultural buildings adjacent to polytunnels are covered by Class B GPDO
- ✓Agrivoltaic structures may require planning permission as they are not standard agricultural buildings
- ✓G98/G99 applications: your installer submits to regional DNO (NGED, UKPN, SSEN, Electricity North West)
- ✓Agricultural businesses qualify for full AIA tax relief on solar installation
- ✓SEG income for surplus generation adds to financial returns
Solar Panels for Polytunnels: Agrivoltaic and Adjacent Mounting
The ideal solar installation for soft fruit and vegetable polytunnel operations is not on top of the polytunnel itself — polytunnel structures are not generally designed to carry panel loads — but on adjacent agricultural buildings (packhouses, cold stores, machinery sheds) that power the polytunnel operation. This adjacent mounting strategy is increasingly common across Herefordshire, Kent, Suffolk and Lincolnshire's soft fruit growing areas.
However, purpose-designed agrivoltaic systems — solar panels on specially engineered structures above growing tunnels — are a growing technology. Several pilot installations in the UK have demonstrated that selected crops (strawberries, raspberries, salad crops) can grow successfully under partially shaded panel arrays, with panels covering 20-30% of growing area. The dual use of land for food production and electricity generation is particularly attractive where planning conditions restrict ground-mounted solar.
Solar Sizing for Polytunnel Farm Operations
| Farm Scale | Key Electricity Users | Recommended System | Annual Saving |
|---|---|---|---|
| 1-5 ha (small) | Packhouse, cold store, irrigation | 30-80 kWp | GBP6,600-GBP17,600 |
| 5-20 ha (medium) | Large packhouse, multiple cold rooms | 80-200 kWp | GBP17,600-GBP44,000 |
| 20-50 ha (large commercial) | Processing lines, multiple cold stores, EV fleet | 200-500 kWp | GBP44,000-GBP110,000 |
Estimates at 28p/kWh, 75% self-consumption.
DNO Connections for Rural Polytunnel Sites
Polytunnel farms are typically rural, connecting to the 11kV medium-voltage distribution network. Grid capacity at rural substations varies significantly. Your installer checks NGED, UKPN or SSEN network capacity maps at the survey stage and advises if grid reinforcement contributions are required. Many rural agricultural substations in the main growing regions (Kent, Lincolnshire, East Anglia, Herefordshire) have available capacity without reinforcement for systems up to 100 kWp.
- ✓Permitted development: agricultural buildings adjacent to polytunnels are covered by Class B GPDO
- ✓Agrivoltaic structures may require planning permission as they are not standard agricultural buildings
- ✓G98/G99 applications: your installer submits to regional DNO (NGED, UKPN, SSEN, Electricity North West)
- ✓Agricultural businesses qualify for full AIA tax relief on solar installation
- ✓SEG income for surplus generation adds to financial returns
Solar for Polytunnel Operations: Advanced Energy Management
Large-scale polytunnel horticultural operations use electricity for irrigation timing systems, propagation heating, lighting supplementation, automated ventilation, cold storage and packhouse refrigeration. These loads are concentrated in the operational season (spring through autumn) when solar generation is at its peak — creating an ideal alignment between generation and consumption.
Irrigation and Climate Control Systems
Modern polytunnel operations use computer-controlled irrigation systems (typically 3-5kW per zone controller), automated side ventilation (motorised systems, 1-2kW per tunnel), and supplemental LED grow lighting (30-80W/m2 in propagation areas). These systems run during daylight hours and respond to temperature and humidity sensors — closely matching the solar generation profile.
Cold Storage for Polytunnel Produce
Packhouses serving polytunnel operations typically include blast-chill and cold storage rooms for soft fruits, salads and cut flowers. Refrigeration is a continuous 24/7 load, but solar combined with battery storage can supply 60-80% of cold storage energy. Pre-cooling during peak solar hours (storing thermal mass in well-insulated cold rooms) reduces overnight energy consumption, extending solar's effective coverage beyond generation hours.
Solar for Organic and Sustainable Horticulture Certification
Organic certification bodies (Soil Association, OF&G) and Leaf Marque sustainable farming standards both reward demonstrable renewable energy use. Solar installation on farm and horticultural buildings contributes positively to certification assessments and is increasingly required by supermarket sustainability supply chain standards for premium produce suppliers.