What is a DNO and why does it affect your Agile price?
DNO stands for Distribution Network Operator. These are the companies that own and operate the cables, substations, and infrastructure that carry electricity from the national transmission network into your street and through to your meter. There are 14 of them in Great Britain, each licensed to operate in a specific geographic area.
DNOs don't generate electricity and they don't sell it to you. They are the pipes, not the water. But the costs they charge to deliver electricity through those pipes vary by region, and those regional distribution charges feed directly into the unit rates on your Octopus Agile tariff.
On top of distribution charges, regional differences in local renewable generation, grid congestion, and demand patterns all affect the wholesale electricity price in each area. A region with abundant offshore wind nearby will often see cheaper overnight Agile prices than a region where power has to travel further. A densely populated urban region may see sharper evening peaks than a rural one.
The result is that two customers on identical Agile tariffs, one in South Wales and one in East Midlands, will see different prices for every half-hour slot. The structure is the same. The rhythm of peak and trough is the same. But the exact numbers differ.
The 14 UK DNO regions: the complete list
Great Britain is divided into 14 distribution regions. Each is operated by one of six major DNO groups. Here is the complete list:
| Region Name | Operator | Coverage Area |
|---|---|---|
| South Western | Western Power Distribution (National Grid) | Cornwall, Devon, Somerset |
| South Wales | Western Power Distribution (National Grid) | Wales and Herefordshire |
| Midlands | Western Power Distribution (National Grid) | West Midlands, Staffordshire, Warwickshire |
| East Midlands | Western Power Distribution (National Grid) | Leicestershire, Derbyshire, Lincolnshire |
| Eastern | UK Power Networks | Essex, Suffolk, Norfolk, Cambridgeshire |
| South Eastern | UK Power Networks | Kent, East Sussex, Surrey |
| London | UK Power Networks | Greater London |
| South Central | Scottish and Southern Electricity Networks | Hampshire, Berkshire, Oxfordshire |
| North Western | Electricity North West | Greater Manchester, Lancashire, Cumbria |
| Merseyside and North Wales | SP Energy Networks | Merseyside, Cheshire, North Wales |
| Yorkshire | Northern Powergrid | Yorkshire, Humberside |
| North Eastern | Northern Powergrid | Northumberland, Tyne and Wear, County Durham |
| South of Scotland | SP Energy Networks | Central Scotland, Lothian, Borders |
| North of Scotland | Scottish and Southern Electricity Networks | Highlands, Islands, Grampian |
When you sign up for Octopus Agile, your region is determined automatically by your postcode. The AgileAlert dashboard lets you select your region directly and view its live and upcoming prices.
How to find which region you're in
There are three reliable ways to find your DNO region.
Method 1: The AgileAlert dashboard. Open the live price dashboard, select your region from the dropdown, and you'll see your half-hourly prices immediately. If you're not sure which region to pick, cross-reference the coverage areas in the table above with your location.
Method 2: Your energy bill or supplier account. Your current electricity supplier lists your DNO on your bill or in your online account. Look for a section called "network operator" or "distribution company." The name will match one of the operators in the table above.
Method 3: The Energy Networks Association postcode checker. The ENA runs a free tool at energynetworks.org where you can enter your postcode and it will identify your DNO region and operator instantly.
Once you know your region, everything else clicks into place. You can track your region's specific price patterns, understand why your overnight rates differ from a friend's in another region, and calibrate your appliance timers to your actual local prices rather than a national average.
Which regions tend to see cheapest Agile prices?
Regional price differences are real but modest. No region pays dramatically more than others over an extended period. However, some patterns emerge consistently.
Regions with high local renewable generation, particularly wind, tend to see the deepest overnight price drops and more frequent plunge pricing events. The North of Scotland region frequently records some of the UK's cheapest overnight rates, driven by the extraordinary concentration of onshore wind capacity in the Highlands. The Yorkshire and North Eastern regions similarly benefit from proximity to North Sea offshore wind.
London and South Eastern regions tend to have slightly higher average rates, reflecting the cost of maintaining high-density urban grid infrastructure and the relative scarcity of local renewable generation. Even so, the overnight windows in London still routinely fall to 4-8p/kWh, far below the standard tariff rate.
The practical implication is this: wherever you live in the UK, the overnight opportunity on Agile is real and substantial. Regional variation changes the precise numbers but not the fundamental pattern. Overnight is cheap. Evening peak is expensive. The savings from shifting your usage are available in every one of the 14 regions.
How local renewable generation shapes your regional price
Your regional price is not just a reflection of the national wholesale market. It also captures the cost of getting power from where it's generated to where it's used, and the constraints that arise when local generation exceeds local demand.
Scotland generates far more electricity from renewables than it consumes. On a windy day, Scottish generation can exceed Scottish demand by a wide margin. Moving that surplus south through the transmission network has a cost, and that cost appears in Scottish Agile prices as slightly elevated distribution charges during constrained periods. Paradoxically, very high wind in Scotland can sometimes push Scottish Agile prices up rather than down, if the export routes to England are congested.
In regions close to offshore wind clusters, the opposite pattern often applies. High wind output locally depresses wholesale prices for that region, because the power doesn't need to travel far. This is part of why Yorkshire and Eastern regions can see particularly cheap overnight prices on high-wind nights.
None of this requires you to understand electricity market mechanics in detail. What matters is that your region has a personality, a set of conditions that shape when prices are lowest and when plunge events are most likely. Checking your region's live prices daily builds that intuition faster than any explainer can.