How clean is Britain’s electricity right now?
Live carbon intensity, fuel mix and a 48-hour forecast, from NESO open data.
Refreshes every 30 minutes
Data: Carbon Intensity API, NESO. All times are UK time. Figures are grid averages for Great Britain, not a statement about any one supplier.
Lab demo
What this demonstrates
Real-time charts from an open, free public API.
- Live data from a free public API (NESO’s Carbon Intensity service), fetched in the browser with loading and error states
- Charts drawn by hand in SVG, a generation-mix donut and a 48-hour forecast, with no chart library
- A decision a business can act on: the cleanest window to run heavy kit or charge vehicles
- Graceful failure: if the feed is down it shows a saved snapshot, clearly labelled as sample data
- Keyboard and screen-reader support, light and dark mode, and an automatic 30-minute refresh
Live APIChartsEnergyDashboard
Want something like this?
Everything in the Lab is hand-built — and a real version for your business starts with a free, no-obligation 20-minute call.
Grid Carbon — a Lab demo, not a real business