Weekly operational planning margin requirement (OPMR)

OPMR is the amount of generation exceeding the demand forecast needed to meet our reserve requirement.
When assessing and publishing generation availability information against system requirements, the ESO includes an OPMR above demand forecast for 2-52 weeks ahead.

NOTE: As part of our ongoing efforts to align with data management best practices and improve consistency across datasets, the column ids in the below datafile will be updated on 17th September 2026 as follows:

  1. Weekly Operational Planning Margin Requirement (OPMR):
    ENG.Week → ENG_Week
    ENG.Year → ENG_Year
    Maximum I/C Import → Maximum IC Import
    Maximum I/C Export → Maximum IC Export
    Operating Reserve provided by I/Cs → Operating Reserve provided by ICs
Generation

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1 Data Files

Last Changed
Format
Name Format Last Changed Download Explore
Weekly Operational Planning Margin Requirement (OPMR) CSV Download (CSV) view

Additional Information

Field Value
Creator National Grid Electricity System Operator
Date Created December 10, 2019 at 4:08 PM (UTC+00:00)
Source National Grid Electricity System Operator
Rights NESO Open Data Licence
Update Frequency Weekly

Tags

cURL integration

Copied

# Get a list of dataset's resources

curl -L -s https://api.neso.energy/api/3/action/datapackage_show?id=weekly-opmr | grep path

# Get resources

curl -L https://api.neso.energy/dataset/025b9417-83a0-445b-a818-414ea49cf7c3/resource/c08419f5-a28d-4e35-87a4-676d7eb05713/download/csv_opmr_weekly.csv

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