Daily Balancing Services Use of System (BSUoS) Volume Data
The BSUoS charge recovers the cost of day-to-day operation of the transmission system. Generators and suppliers are liable for these charges, which are calculated daily as a flat tariff for all users. Historical values of these charges, on a daily basis in a annual file, are provided here. There have been 60 settlement periods missing from 01 January 2017 up to today. You can find the complete list in the Missing_Dates_Periods.xlsx file below.
NOTE: As part of our ongoing efforts to align with data management best practices and improve consistency across datasets, these column ids from the below historical datafiles will be updated on 28th October 2026 as follows:
Energy Imbalance (MWh) → Energy Imbalance MWh
Frequency Control Offers (MWh) → Frequency Control Offers MWh
Frequency Control Bids (MWh) → Frequency Control Bids MWh
Positive Reserve (MWh) → Positive Reserve MWh
Constraint Offers (MWh) → Constraint Offers MWh
Constraint Bids (MWh) → Constraint Bids MWh
Negative Reserve (MWh) → Negative Reserve MWh
Other (MWh) → Other MWh
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11 Data Files
| Name | Format | Last Changed Sort ascending | Download | Explore |
|---|---|---|---|---|
| Daily Balancing Volume 2026-2027 | CSV | Download (CSV) | view | |
| Daily Balancing Volume 2025-2026 | CSV | Download (CSV) | view | |
| Missing Settlement Periods since January 2017 | XLSX | Download (XLSX) | view | |
| Daily Balancing Volume 2024-2025 | CSV | Download (CSV) | view | |
| Daily Balancing Volume 2023-2024 | CSV | Download (CSV) | view | |
| Daily Balancing Volume 2021-2022 | CSV | Download (CSV) | view | |
| Daily Balancing Volume 2018-2019 | CSV | Download (CSV) | view | |
| Daily Balancing Volume 2022-2023 | CSV | Download (CSV) | view | |
| Daily Balancing Volume 2020-2021 | CSV | Download (CSV) | view | |
| Daily Balancing Volume 2019-2020 | CSV | Download (CSV) | view |
Additional Information
| Field | Value |
|---|---|
| Creator | National Grid Electricity System Operator |
| Date Created | May 7, 2020 at 2:13 PM (UTC+00:00) |
| Source | National Grid Electricity System Operator |
| Rights | NESO Open Data Licence |
| Update Frequency | Weekly |
cURL integration
# Get a list of dataset's resources
curl -L -s https://api.neso.energy/api/3/action/datapackage_show?id=daily-balancing-volume-balancing-services-use-of-system | grep path
# Get resources
curl -L https://api.neso.energy/dataset/252b7bd1-7452-41bf-9b60-540cb1c0751a/resource/e781da74-6c35-4296-81dd-250cee869c19/download/q1_vol_fy2627.csv
curl -L https://api.neso.energy/dataset/252b7bd1-7452-41bf-9b60-540cb1c0751a/resource/ef47829c-4916-4a6d-8554-257b6241026a/download/q1_vol_fy2526.csv
curl -L https://api.neso.energy/dataset/252b7bd1-7452-41bf-9b60-540cb1c0751a/resource/5cb7f9f2-0c76-4c5c-90f9-8720de1fc85f/download/missing_dates_periods.xlsx
curl -L https://api.neso.energy/dataset/252b7bd1-7452-41bf-9b60-540cb1c0751a/resource/62760005-e3bc-4a27-8207-2a2c035055d0/download/q1_vol_fy2425.csv
curl -L https://api.neso.energy/dataset/252b7bd1-7452-41bf-9b60-540cb1c0751a/resource/66984a1a-4b02-4dd7-9183-425babf23b02/download/q1_vol_fy2324.csv
curl -L https://api.neso.energy/dataset/252b7bd1-7452-41bf-9b60-540cb1c0751a/resource/539cc579-37e1-4b6f-94e5-c26f9ec9be70/download/q1_vol_fy2122.csv
curl -L https://api.neso.energy/dataset/252b7bd1-7452-41bf-9b60-540cb1c0751a/resource/0481067a-8a0e-465a-85a1-79482fca9307/download/q1_vol_fy1819.csv
curl -L https://api.neso.energy/dataset/252b7bd1-7452-41bf-9b60-540cb1c0751a/resource/0cb9b169-a14a-4d1f-b08a-273b21519465/download/q1_vol_fy2223.csv
curl -L https://api.neso.energy/dataset/252b7bd1-7452-41bf-9b60-540cb1c0751a/resource/b097d727-5adf-4c7c-98e5-4f8914b0f524/download/q1_vol_fy2021.csv
curl -L https://api.neso.energy/dataset/252b7bd1-7452-41bf-9b60-540cb1c0751a/resource/e1043731-cc07-4e41-89a4-596316a663e8/download/q1_vol_fy1920.csv