Solar economics change with your latitude, your Distribution Network Operator and your local grant landscape. Pick your region for the irradiance, grid process, funding and worked payback that actually apply to your site.
Derbyshire, Nottinghamshire, Leicestershire, Lincolnshire, Northamptonshire & Rutland. Magna Park logistics, Rolls-Royce, Toyota and Boots — a deep advanced-manufacturing base with large factory and warehouse roofs.
Cardiff, Newport, Swansea, Caerphilly, Bridgend, the Vale of Glamorgan & Gwent. M4-corridor commercial belt with more accessible Welsh Government decarbonisation grants than English equivalents.
Gloucester, Cheltenham, Stroud & Tewkesbury. Aerospace (Safran, GE Aviation), GCHQ and the Golden Valley cyber cluster, with one of the highest commercial solar yields in England.
Exeter, Plymouth, Torbay & Barnstaple. The UK’s second-highest regional irradiance, Babcock Devonport, the Met Office and a strong food, marine and hospitality base.
Leicester, Loughborough, Hinckley & Coalville. Magna Park — the UK’s largest dedicated distribution park — plus Samworth Brothers, Walkers and a major food-manufacturing cluster.
Southampton, Portsmouth, Basingstoke, Winchester & Farnborough. Solent Freeport tax advantages, port logistics, and a marine, aerospace and defence base on the high-yield south coast.
Bournemouth, Poole, Weymouth & Dorchester. The highest south-coast yields in the country, Sunseeker marine engineering, Bournemouth financial services and a large hospitality sector.
Derby, Chesterfield, Ilkeston & Swadlincote. Rolls-Royce aero engines, Toyota Burnaston and Alstom rail — an automotive and advanced-manufacturing supply chain with a strong IETF base.
Newcastle, Sunderland, Gateshead, Middlesbrough & Teesside. Nissan’s gigafactory, the Teesside net-zero industrial cluster and the fastest G99 offers of any UK DNO.
Most commercial solar content is written as if the UK were a single market. It isn't. A 250 kW rooftop array in Devon generates meaningfully more each year than the same array in the North East, simply because of latitude and cloud cover. That changes the payback, the internal rate of return and the case you put to your board.
The grid is just as regional. Your Distribution Network Operator — National Grid Electricity Distribution (NGED) across the Midlands, South West and South Wales; SSEN across the central south; Northern Powergrid in the North East; SP Energy Networks across much of Wales and Scotland — sets the timescale and cost of your G99 export connection. Northern Powergrid routinely returns the fastest offers in the country; constrained substations elsewhere can add months. We track this per region so you aren't surprised at connection stage.
Finally, funding is devolved. Businesses in South Wales can often access Welsh Government and Development Bank of Wales support that simply isn't available in England, where the route is usually the Industrial Energy Transformation Fund, Salix for the public sector, and 100% Annual Investment Allowance tax relief. Each regional guide below maps the funding that actually applies where you operate.
What each regional guide covers
Regional irradiance and expected yield (kWh/kWp), and what it means for generation
The industrial geography — named estates, parks and the sectors that dominate local demand
DNO and grid-connection process for the area (G98 / G99)
Cost and payback at £700–£1,200/kW, with a worked example for a typical local building
Grants and funding available to businesses in that region
Not sure which applies? Most of our work clusters around named cities too — browse all UK city location guides, or go straight to a free desk feasibility and we'll model your specific postcode, roof and half-hourly consumption.
Specialist Sister Sites
Commercial Solar Across the UK
A network of specialist UK commercial solar sites — each focused on a sector or region we know inside out.