Transmission Network Use of System (TNUoS) Tariffs | National Energy System Operator
Summary
NESO publishes quarterly TNUoS tariff data across eight categories including transmission demand residual charges, generator tariffs (onshore and offshore), and embedded export tariffs. The dataset provides granular breakdown of network use charges that recover transmission system costs from users. Files are updated quarterly when tariffs are published, with data available via API and CSV download.
Why it matters
This is reference data that enables market participants to understand transmission charging — the mechanism for recovering £3-4bn annually in transmission costs. The data itself doesn't change rules but reveals how locational and temporal price signals allocate transmission system costs across different user categories.
Key facts
- •Eight tariff categories covering demand residual, generator (onshore/offshore), embedded export, and local circuit charges
- •Quarterly publication schedule aligned with tariff setting
- •Dataset created January 2021, updated monthly according to metadata
Areas affected
Related programmes
Memo
Transmission Network Use of System (TNUoS) Tariffs | National Energy System Operator Show/Hide Menu Toggle Add to favourites Close tooltip Sign in to add this page to your favourites Sign in or register Show favourites Close Close tooltip Sign in or register to manage your favourites Sign in or register Help You are now signed in Visit My NESO account to view and manage your dataset subscriptions. Maybe later Go to your account Transmission Network Use of System (TNUoS) Tariffs This dataset contains a breakdown of all the Transmission Network Use of System (TNUoS) tariff elements of which are forecasted and set by the revenue team at National Grid ESO. These files will be updated on a quarterly basis (when tariffs are published), to receive automatic updates please register and subscribe to this dataset. Network charges Sign in to subscribe and receive the latest updates Sign in or register 8 Data Files Filters Last Changed From To Format CSV (8) Name Format Last Changed Sort ascending Download Explore Transmission Demand Residual (TDR) Tariffs CSV 1 month ago Download (CSV) view Local Offshore Generator Tariffs CSV 1 month ago Download (CSV) view Local Substation TNUoS Tariff CSV 1 month ago Download (CSV) view Onshore Local Circuit Tariffs CSV 1 month ago Download (CSV) view Onshore Generator Tariffs CSV 1 month ago Download (CSV) view Embedded Export Tariffs CSV 1 month ago Download (CSV) view Non Half-Hourly (NHH) Demand Tariffs CSV 1 month ago Download (CSV) view Half-Hourly (HH) Demand Tariffs CSV 1 month ago Download (CSV) view Additional Information Field Value Creator National Grid Electricity System Operator Date Created January 15, 2021 at 11:09 AM (UTC+00:00) Rights NESO Open Data Licence Update Frequency Quarterly Tags Charging Demand Demand Residual Banded Charges Embedded Export Generator Revenue Subscribable TNUOS Tarifs cURL integration Copied # Get a list of dataset's resources curl -L -s https://api.neso.energy/api/3/action/datapackage_show?id=transmission-network-use-of-system-tnuos-tariffs | grep path # Get resources curl -L https://api.neso.energy/dataset/eaef4708-1100-4ad9-98d5-d892f3c9a56c/resource/dcca94fd-343e-4d4e-8c5d-66009dec4ad3/download/tnuos_tdr-tariffs.csv curl -L https://api.neso.energy/dataset/eaef4708-1100-4ad9-98d5-d892f3c9a56c/resource/98569a29-940d-4bb7-8dc4-01e46187039a/download/tnuos_generation_offshore.csv curl -L https://api.neso.energy/dataset/eaef4708-1100-4ad9-98d5-d892f3c9a56c/resource/e697e9be-c068-482d-ae35-01f60bcb6700/download/local-substation-tnuos-tariff.csv curl -L https://api.neso.energy/dataset/eaef4708-1100-4ad9-98d5-d892f3c9a56c/resource/01f36b32-4ad3-47fa-a645-7f7a47f1b0ae/download/tnuos_onshore_local_circuit.csv curl -L https://api.neso.energy/dataset/eaef4708-1100-4ad9-98d5-d892f3c9a56c/resource/ffc0adb8-5426-474e-94a3-a5f3f01a0cdb/download/tnuos_generation_onshore.csv curl -L https://api.neso.energy/dataset/eaef4708-1100-4ad9-98d5-d892f3c9a56c/resource/af4501a0-6b96-4088-926c-7c7b0c499b08/download/tnuos_embeddedexport.csv curl -L https://api.neso.energy/dataset/eaef4708-1100-4ad9-98d5-d892f3c9a56c/resource/4e8dd130-5283-4f22-8c05-84e4d3280eb3/download/tnuos_demand_nhh.csv curl -L https://api.neso.energy/dataset/eaef4708-1100-4ad9-98d5-d892f3c9a56c/resource/6abe8416-149c-4c78-b65b-059eea19957a/download/tnuos_demand_hh.csv Show more For any queries or feedback please contact [email protected] logo--facebook