What Settlement Period Is It?
Settlement periods are the UK's half-hour electricity trading windows
Sunday, 1 March 2026
Next 3 settlement periods
Find the settlement period for any date/time
Energy Trading
Wholesale electricity is bought and sold in half-hour blocks
Smart Meter Data
HH data from suppliers uses settlement periods — map your usage
Time-of-Use Tariffs
Agile tariffs price each settlement period differently
UK electricity settlement periods are 30-minute intervals used for trading and balancing the power grid. Each day typically has 48 settlement periods, starting at midnight local time.
Clock Changes
Twice a year, the number of periods changes due to British Summer Time (BST) transitions:
- Spring (last Sunday of March): 46 periods — the 01:00-02:00 hour is skipped
- Autumn (last Sunday of October): 50 periods — the 01:00-02:00 hour occurs twice
2026 Clock Change Dates
Integrate settlement period data into your applications
Access real-time settlement period data programmatically with our free public API. No authentication required.
curl -L "https://www.stottp.com/api/v1/settlement-period/current" /current Get current period with progress
/at?datetime=... Find period for any datetime
/range?date=... Get all periods for a date
/from-period?date=...&period=... Get time for a specific period
This API is provided "as is" without warranty of any kind. It is intended for personal projects, learning, and non-critical applications. For production use cases requiring guaranteed uptime or SLAs, please consider official data sources such as the Elexon BMRS API.