UK Gas Network Monitor
How Great Britain’s gas network is coping right now — official shortage warnings, the week-ahead demand against the level that triggers a warning, where today’s gas is coming from (Norway, the North Sea, LNG ships, storage), how full storage is, the wholesale price, and a year of history. From National Gas Transmission’s live data.
- Shortage warnings
- Days of gas in reserve
- Imports by country
Network status
gas day Mon 19 Oct (05:00–05:00) · live flows 16:59 UK timeDays of gas in reserve
an estimate · stored gas ÷ daily demandThis is the headline “how many days could stored gas alone cover?” figure. In reality Britain never runs on storage alone: Norwegian and North Sea pipelines and LNG ships keep flowing every day, and storage fills the gap on cold days or if a supply fails. Storage also can’t be emptied all at once — each site has a maximum withdrawal rate. Gas is converted at about 11 GWh per mcm. For comparison, Germany and France can store enough for several weeks to months of demand.
Next 7 days — demand vs the warning trigger
million cubic metres (mcm) per gas dayBars are National Gas’s demand forecast; the marker is the Margins Notice trigger — the demand level at which forecast supply would be stretched. A notice is only issued when demand gets close to it. In a cold snap demand can roughly double, so watch for bars creeping towards the marker.
Where the gas is coming from
| Terminal | mcm/day |
|---|---|
| Easington East Yorkshire — Norway’s Langeled pipeline, plus Rough storage | 74.7 |
| St Fergus Aberdeenshire — North Sea gas from UK and Norwegian fields | 50.0 |
| Teesside Central North Sea fields (CATS pipeline) | 20.8 |
| Bacton (UK fields) Norfolk — southern North Sea fields | 14.5 |
| Milford Haven Pembrokeshire — LNG from ships (South Hook, Dragon) | 6.6 |
| Isle of Grain Kent — LNG import terminal | 2.8 |
| Bacton (interconnectors) Norfolk — pipelines to/from Belgium and the Netherlands | 0 |
| Barrow Cumbria — Irish Sea fields | 0 |
| Theddlethorpe Lincolnshire | 0 |
Where it’s going
Gas storage
gas held at each site, gigawatt-hours (GWh)Britain has little gas storage compared with its neighbours — roughly a week or two of winter demand. Rough, once the UK’s largest store, currently holds no gas, so most reserves sit in the smaller medium-range sites (salt caverns that can be filled and emptied quickly) plus LNG tanks at the import terminals. Storage normally fills through the summer and is drawn down over winter.
Where Britain’s gas came from — last 12 months
daily supply by source, mcm/day · hover for the dayNorway (Langeled) is the Norwegian pipeline into Easington. North Sea pipelines carry UK fields’ gas and more Norwegian gas (via the FLAGS, Vesterled and SAGE pipelines to St Fergus), so Norway’s real share is bigger than the blue band alone — the country breakdown below separates it. Storage rises in winter as reserves are drawn down.
Gas imports by country — monthly
GWh per month · official statistics, about 3 months behindShare of imports, last 12 months
Norwegian gas by pipeline, last 12 months
Imports only — gas produced in UK waters isn’t included. LNG arrives by ship, so its source countries shift month to month with world prices. Latest month: July 2026 (provisional). Source: DESNZ Energy Trends table 4.3 (SEP_26 release), Open Government Licence v3.0.
The last 12 months
daily figures · hover for valuesGas demand (mcm/day)
Storage full (medium-range, %)
Wholesale price — System Average Price (p/kWh)
Linepack at the start of each gas day (mcm)
How to read this
Gas Balancing Notification (the warning formerly called a Gas Deficit Warning) means National Gas expects more gas to be used than is coming in. It asks suppliers to bring more gas onto the network and big users to cut back. If that isn’t enough, a Network Gas Supply Emergency can follow, where the largest industrial users are switched off first; homes are protected and are the last to be affected.
The Margins Notice trigger is the demand level at which supply would be stretched; notices are only issued when the forecast gets close to it. A gas day runs from 05:00 to 05:00. Gas is measured here in million cubic metres (mcm); one mcm is roughly 11 GWh of energy.
Source & updates
Live flows, notices, forecasts, storage and prices from National Gas Transmission’s data portal (its free public API). Live figures are refreshed every 15 minutes and the history every 6 hours. This is the Great Britain national transmission system; Northern Ireland has a separate network. The “gas stress” score is our own indicative estimate, not an official measure.
Related: the UK Electricity Grid, the Global Situation Monitor and the Power cost calculator.