What's powering Wales right now?
The live electricity mix in Wales, carbon and the cleanest times to use power, from the grid operator's own figuresThe electricity mix in Wales
Region by region
Wales is split between two network regions. North Wales shares its region with Merseyside and Cheshire (SP Energy Networks), and South Wales is covered by National Grid Electricity Distribution. Here's how each one looks right now, cleanest first. Hover over or tap the map to see any region.
When's the cleanest time to use power in Wales?
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See the grid where your business is
Pop in your site's postcode and we'll show you your local grid and the cleanest hours to use power there. Nothing is saved at this step.
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Here's how much carbon each unit of electricity in Wales is forecast to carry over the next 24 hours.
How the grid in Wales works
Wales has wind farms on its hills and off its north coast, solar across the south and west, and Pembroke, one of the biggest gas-fired power stations in Europe. When Pembroke's running hard, South Wales can carry some of the highest carbon in Britain while North Wales stays much cleaner.
That gap means two sites in Wales can see very different carbon at the same moment, so it's worth checking your own postcode rather than going by the figure for Wales as a whole.
- Coal Aberthaw, the last coal power station in Wales, closed in 2020.
- Nuclear Wylfa on Anglesey stopped generating in 2015, so Wales has no working nuclear station.
- Storage Dinorwig, inside a mountain in Eryri (Snowdonia), is a pumped-storage hydro station that can reach full power within about a minute to steady the grid.
What it means for your business
Network charges are set region by region, and South Wales and North Wales sit in different regions. If you run sites in both, or across the border in England, the same contract can cost different amounts at each. We'll check that for you.
Get a quoteReady for half-hourly settlement?
Business electricity is moving to half-hourly settlement (MHHS), so when you use power is about to matter as much as how much. See what it means for your site.
Check your MHHS riskSee another nation
Tap a nation on the map, or pick one below.
See all of Britain live, with imports and supplier fuel mixesNorthern Ireland runs on a separate grid shared with Ireland, so its figures come from SONI, the grid operator there.
Live figures: the mix, carbon intensity and forecast for Wales, and each network region's, from the NESO Carbon Intensity API (CC BY 4.0). Regional figures are NESO's estimates of the electricity used in each region, including power flowing in from elsewhere, and are updated every half hour.
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For more information
01273 914000To talk about your business electricity, phone us on the number above, or request a quote and one of our energy experts will call you at a time that suits you.