Slow Reserve Requirement Forecast
Slow Reserve, separated into Negative Slow Reserve (NSR) and Positive Slow Reserve (PSR), is primarily aimed at reacting to post-fault disturbances to restore energy imbalances to +/- 0.2Hz within 15 minutes of a loss event (generation or demand). The service is procured via a daily auction at 14:00 for delivery between 23:00 and 23:00 D+1.
This data set contains the daily forecast of requirements for procurement of Positive Slow Reserve and Negative Slow Reserve.
The dataset is updated monthly.
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1 Data Files
| Name | Format | Last Changed Sort ascending | Download | Explore |
|---|---|---|---|---|
| Slow Reserve Requirement Forecast | CSV | Download (CSV) | view |
Additional Information
| Field | Value |
|---|---|
| Date Created | February 25, 2026 at 9:21 AM (UTC+00:00) |
| Rights | NESO Open Data Licence |
| Update frequency | Monthly |
cURL integration
# Get a list of dataset's resources
curl -L -s https://api.neso.energy/api/3/action/datapackage_show?id=slow-reserve-requirement-forecast | grep path
# Get resources
curl -L https://api.neso.energy/dataset/87d77cd4-f3c8-4fda-973b-91149ee7a0e6/resource/ccde1a9e-1885-4271-84a3-bb064194bce9/download/slow-reserve-requirement-forecast.csv