Commercial Solar Panel Installation in Devon
Devon's South West location delivers outstanding solar irradiance combined with above-average electricity rates. From Exeter's growing technology sector to Plym
Devon's South West location delivers outstanding solar irradiance combined with above-average electricity rates. From Exeter's growing technology sector to Plymouth's marine industries and the county's vast agricultural base, Devon businesses are well-placed for solar investment.
1,120 kWh/m²
Annual Solar Irradiance
970 kWh/kWp
Annual Solar Yield
31p/kWh
Avg Commercial Electricity Rate
3-4 years
Typical Payback Period
Commercial Solar Installation in Devon
Devon's diverse economy spans Exeter's rapidly growing technology and professional services sector, Plymouth's marine, defence, and manufacturing industries, and extensive agricultural and tourism operations across the county. The region's commercial property ranges from modern business parks at Exeter Science Park to historic harbourside developments in Plymouth and industrial estates across the South Hams.
Our Devon installation teams cover the entire county, from logistics centres along the M5 corridor to marine engineering facilities in Plymouth, agricultural buildings across Dartmoor's fringe, and tourism properties along the English Riviera. We understand Devon's unique mix of planning environments including two national parks and extensive AONB coverage.
With commercial electricity rates averaging 31p/kWh and annual solar yields of 970 kWh per kWp, Devon offers some of the best commercial solar economics in the UK. A 100kW system generates approximately 97,000 kWh annually, saving around £30,000 per year with payback typically in 3-4 years.
Devon Solar Economics
Devon benefits from solar irradiance of approximately 1,120 kWh/m² annually, producing around 970 kWh per kWp installed. The South Devon coast records some of the highest sunshine hours in England.
Higher-than-average electricity rates in Devon mean the financial savings per kilowatt-hour generated are significant. Tourism businesses benefit from peak generation coinciding with peak summer demand, while agricultural operations reduce costs year-round.
Key Areas We Serve in Devon
- Exeter
- Plymouth
- Torquay
- Newton Abbot
- Barnstaple
- Tiverton
- Exmouth
- Paignton
- Crediton
- Honiton
- Okehampton
- Tavistock
Industries We Serve Across Devon
- Tourism & Hospitality
- Marine & Defence
- Agriculture
- Technology
- Food & Drink
- Manufacturing
- Healthcare
- Education
Planning Considerations in Devon
Devon includes Dartmoor and Exmoor National Parks plus extensive AONB coverage. Commercial rooftop solar is generally permitted development even within these designations. Ground-mounted arrays in national parks face additional scrutiny. Our team navigates all planning requirements across Devon's diverse planning authorities.
Devon Commercial Solar FAQs
How does Devon's solar potential compare to other UK counties?
Devon enjoys approximately 1,120 kWh/m² of annual solar irradiance, placing it among the top solar-producing counties in England. The South Devon coast records some of the highest sunshine hours in the country. Combined with above-average electricity rates of 31p/kWh, Devon delivers some of the fastest commercial solar payback periods in the UK.
Is commercial solar suitable for Devon tourism businesses?
Devon's tourism and hospitality sector is ideally suited to solar. Hotels, holiday parks, and leisure facilities experience peak demand during summer months when solar generation is highest. A 100kW system on a Devon hotel generates approximately 97,000 kWh annually, with summer self-consumption ratios often exceeding 85%.
Can Plymouth marine businesses install commercial solar?
Plymouth's marine and defence businesses can install commercial solar with appropriate coastal specifications. We use marine-grade mounting systems and corrosion-resistant components for installations near the waterfront. Solar helps marine businesses reduce energy costs while meeting increasingly stringent sustainability requirements in defence and marine procurement.
What are the costs for commercial solar in Devon?
Commercial solar in Devon typically costs between £790 and £1,060 per kWp. A 100kW system costs approximately £79,000 to £106,000, with payback in 3-4 years. Devon's excellent solar resource means 25-year savings exceed £550,000 for a 100kW installation at current electricity rates.
Does Dartmoor National Park affect commercial solar?
Dartmoor National Park designation primarily affects ground-mounted solar arrays, which require full planning permission within the park boundary. Commercial rooftop installations on existing buildings are generally permitted development. Businesses on the Dartmoor fringe and in surrounding towns like Tavistock and Okehampton can install rooftop solar under standard permitted development rights.
Nearby counties we serve
Frequently Asked Questions
How much does commercial solar cost in Devon?
Commercial solar in Devon costs £750–£1,050 per kWp installed in 2026. Devon enjoys some of England's highest solar irradiance (~1,000 kWh/kWp/year) — significantly above the UK average, giving faster payback than northern locations. A 100kWp system saves £21,000–£28,000 per year at 30p/kWh. Payback is typically 3–4.5 years, falling to 2.5–3.5 years after AIA tax relief.
Who is the DNO for Devon?
Devon is served by National Grid Electricity Distribution (NGED) in most areas. The far south-west — Plymouth and surrounding areas — may be served by NGED's South West zone. For commercial solar with grid export above 3.68kW AC per phase, a G99 application to NGED is required. Standard processing is 65 working days. Rural Devon locations — particularly North Devon and Dartmoor fringes — may have constrained network capacity and may benefit from export limiting or battery storage to manage grid connection.
Does Devon get enough sunshine for commercial solar to pay back well?
Yes — Devon has some of the best solar irradiance in England at approximately 1,000–1,050 kWh/kWp/year (compare: London 1,050, Manchester 900). The South Hams, Torquay and Exeter areas all generate strong annual yields. A 100kWp system on a Torquay hotel or Exeter warehouse saves £21,000–£28,000 per year — payback of 3–4 years. Tourism and hospitality businesses in Devon particularly benefit from summer solar peaks aligning with their peak trading season.
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MCS Certified | 25-Year Warranty | Nationwide Coverage
Quick Answer
Which commercial solar installers cover Devon?
We are MCS-certified commercial solar installers covering all Devon postcodes: EX (Exeter, Exmouth, Barnstaple), PL (Plymouth, Tavistock), and TQ (Torquay, Paignton, Newton Abbot, Totnes). Western Power Distribution (now National Grid ED) manages G99 connections across Devon — expect 14–18 weeks for systems over 50kWp. Devon's outstanding solar irradiance (1,100–1,160 kWh/m²/year) means a 100kWp system generates approximately 92,000 kWh/year, saving a business paying 29p/kWh around £26,700 annually. Combined with Annual Investment Allowance, typical post-AIA payback is 2.8–3.5 years. Free site survey across all Devon postcodes — typically available within 5 working days.