National Grid ESO
L o a d i n g
National Grid Electricity System Operator (ESO) is the transmission system operator, working to balance supply and demand in real time, as well as coordinating markets and auctions which ensure sufficient future supply, and exploring initiatives such as demand-side response measures to reduce peaks in electricity demand.
Available DatasetsShowing 33 of 33 results
- The dataset contains national and BMU wind forecast over a day ahead timescale as well as all historic day ahead wind forecasts to assist the industry to make efficient decisions in balancing their supply and demand positions.1Licence not specifiedabout 1 year ago
- As part of Clean Energy Package (CEP) 6.9 we will be running daily auction for procurement of Short Term Operating Reserve (STOR). The daily results from the auction are available here.1Licence not specifiedabout 1 year ago
- This dataset contains national carbon intensity forecast for the GB electricity system. The carbon intensity of electricity is a measure of how much CO2 emissions are produced per kilowatt hour of electricity consumed.1Licence not specifiedabout 1 year ago
- Balancing Services Adjustment Data (BSAD) is used to submit balancing actions to the Balancing & Settlement Code (BSC), which defines the rules and governance for the balancing mechanism and imbalance settlement processes of electricity in Great Britain. BSAD covers actions taken outside of the balancing mechanism. >The BSAD methodology statement can be found here: [https://www.nationalgrideso.com/document/110891/download](https://www.nationalgrideso.com/document/110891/download)1Licence not specifiedabout 1 year ago
- This dataset contains regional carbon intensity forecast for the GB electricity system.The carbon intensity of electricity is a measure of how much CO2 emissions are produced per kilowatt hour of electricity consumed.1Licence not specifiedabout 1 year ago
- The number of voltage machine required for a given voltage group for upcoming weekend and following Monday to Friday. Given the complexity and locational nature of the voltage requirement, the actual requirement is likely to change, also further optimisation can be carried out towards real time based on the market condition, unit running pattern, demand and supply fundamentals.1Licence not specifiedabout 1 year ago
- This dataset is a component of the Forward Plan 2020-21 commitment to increase the transparency of our operational decision making in the Balancing Mechanism (BM). It includes the publication of actions taken in the BM, reasons for them and includes a methodology document for the process.1Licence not specifiedabout 1 year ago
- National Energy System Operator (NESO) publishes at a half-hourly resolution the embedded (refer to embedded document for definition) wind and solar forecast from within day up to 14 days ahead. This forecast gets updated on an hourly basis.1Licence not specifiedabout 1 year ago
- This dataset contains an estimate of the outturn inertia and market provided inertia for Great Britain Transmission System.1Licence not specifiedabout 1 year ago
- This dataset contains national electricity demand forecast for 2 days ahead as well as all historic 2 day ahead demand forecasts. The forecast assists the industry to make efficient decisions in balancing their supply and demand positions.1Licence not specifiedabout 1 year ago
- This publication displays the Electricity System Operator’s (ESO) wind generator availability in megawatt (MW) at a generator level at a weekly resolution for 2-52 weeks ahead.1Licence not specifiedabout 1 year ago
- This publication displays the Electricity System Operator’s (ESO) wind generator availability in megawatts (MW) at a daily resolution for 2-14 days ahead.1Licence not specifiedabout 1 year ago
- This dataset contains the volumes of all BOAs taken on wind BMUs that are used in our incentive wind forecasts.1Licence not specifiedabout 1 year ago
- Index Linked Contract can be used by National Grid ESO to meet the [voltage requirement](https://www.nationalgrideso.com/transmission-constraint-management?market-information "voltage"). The contract is normally enacted in the morning ahead of the power exchange auction. The generator will get paid based on the agreed strike price. The generator will also be compensated if the generation spread is negative, if positive, the positive spread will be deducted from the strike price. As the generation spread is calculated based on the outturn market indices, so the name of index linked contract.1Licence not specifiedabout 1 year ago
- This data set gives indicative values for the average daily price (in £ per GVAs) for BM accepted offers tagged as being for System Inertia. The tagging process identifies the most likely main reason for a Balancing Mechanism action, and is a best endeavours process, as individual actions can be taken for a combination reasons. The data is published at daily resolution, and is calculated by summing the total cost of all offers tagged in each day as System Inertia actions and dividing by the sum of estimates of the inertia provided. Worked examples are provided below. 1. ESO sum up the total cost of actions instructed in the BM which are tagged as system inertia for a given day. 2. ESO sum up the total volume of inertia shortfall (GVA.s) in each settlement period of the day. 3. ESO divide the total cost of inertia actions per day by the total volume of inertia shortfall (GVA.s) to give the average daily cost per GVA.s. Example 1: - Settlement Periods 4-7 (inclusive) = 1 GVA.s shortfall in each period replaced at total cost of £5,000. - Settlement Periods 8-11 (inclusive) = 4 GVA.s shortfall in each period replaced at total cost of £40,000. Total cost for the day = £5,000 + £40,000 = £45,000 Total inertia volume instructed for the day (on SP basis) = (1 x 4 SPs) + (4 x 4 SPs) = 20 GVAs Average daily inertia cost = (45,000 / 20) = £2,250/GVA.s Example 2: - SP 4-8 = 1 GVA.s shortfall in each period replaced at total cost of £5,000. - SP 8-16 = 4 GVA.s shortfall in each period replaced at total cost of £80,000. Total cost for the day = £5,000 + £80,000 = £85,000 Total inertia volume instructed for the day (on SP basis) = (1 x 4) + (4 x8) = 36 GVAs Average daily inertia cost = (85,000 / 36) = £2,361/GVA.s These examples represent the average daily inertia cost (£/GVA.s) using the actions we take on a SP basis where system inertia is below our minimum operating level.1Licence not specifiedabout 1 year ago
- This dataset will contain our forecasted requirements for Static Firm Frequency Response.1Licence not specifiedabout 1 year ago
- 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.1Licence not specifiedabout 1 year ago
- The Firm Frequency Response (FFR) post tender reports are published following each monthly tender. They indicate which tenders were accepted and rejected and the information submitted for these tenders. Reason codes, which explain why a given tender was rejected, can be found below the table in the data files, or in the FFR market information reports.1Licence not specifiedalmost 2 years ago
- 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, are provided here.1Licence not specifiedover 2 years ago
- The Balancing Services Use of System (BSUoS) costs are reported on a monthly basis with a forecast for the next month and a rolling 24 month period. Here you can find the report created each month which includes the outturn from the previous month, the forecast for the next 24 months and a view on accuracy of previous forecasts. **Disclaimer**: This forecast is published without prejudice and whilst every effort has been made to ensure the accuracy based on the assumptions and models used, it is subject to several estimations and forecasts and may not bear relation to either the indicative or actual tariffs Electricity system Operator will publish at a later date. Note: The February outturn was published with the incorrect volume which affects the outturn BSUoS charge. Please see the revised outturn below incorporating these updates. No figures have been changed except for the volume for Feb 22 and therefore the BSUoS charge for Feb 22.1Licence not specifiedover 2 years ago
- The data set shows the daily costs outturn per category associated with balancing the system for the year to date, and the daily forecast costs for the following financial year. In the dataset the category costs are presented broken down per services procured through the Balancing Mechanism, Trading, Ancillary Services and SO-to-SO transactions. 1Licence not specifiedover 2 years ago
- The Balancing Services Charging Report (BCR) provides a breakdown of the Balancing Services Use of System (BSUoS) charge. There is a BCR for each run type we calculate a BSUoS charge for - Interim Initial (II), Settlement Final (SF) and Reconciliation Final (RF). It is published each day that we invoice our BSUoS customers. The file is a zip file containing the report in PDF, PRT, DAT and CSV format. These files correspond to the BCRNEW files being published on the website. https://www.nationalgrideso.com/industry-information/charging/balancing-services-use-system-bsuos-charges.1Licence not specifiedabout 3 years ago
- Documentation relating to interconnector trading, including the procurement framework and supporting materials. Watch the video below: >**NOTE:** Interconnector Requirement and Auction Summary Data1Licence not specifiedabout 3 years ago
- >**NOTE:** The ESO operational transparency forum has a new website page, please visit the ESO website for up to date information. All historic data has been transitioned over to the new platform and in turn this data set will be discontinued. https://www.nationalgrideso.com/who-we-are/electricity-national-control-centre/operational-transparency-forum1Licence not specifiedabout 3 years ago
- In April 2018, the ESO initiated strategic transformation project to develop and implement state of art forecasting capability to deliver value to consumers by providing accurate possible, user-friendly comprehensive forecasts to our stakeholders to make informed decisions ahead of real-time Our strategic forecasting project aims to replace our existing energy forecasting system (EFS) with an advanced cloud-based platform for energy forecasting (PEF) while designing & improving forecasting models, methodologies and apply advanced statistical learning & machine learning modelling techniques & automation. On this page, you will find updates to the roadmap for the project.1Licence not specifiedabout 3 years ago
- Fast Reserve provides the rapid and reliable delivery of active power through an increased output from generation or a reduction in consumption from demand sources, following receipt of an electronic dispatch instruction from National Grid Electricity System Operator (ESO). These tender reports provide information on the post-assessment results of tenders. > **Note:** This datafeed **is no longer being updated** as we are not currently procuring Fast Reserve. More information about the future of Fast Reserve tenders can be found here: [https://www.nationalgrideso.com/balancing-services/reserve-services/fast-reserve](https://www.nationalgrideso.com/balancing-services/reserve-services/fast-reserve)1Licence not specifiedabout 3 years ago
- If demand ends up being greater than forecast, or there is unforeseen generation unavailability, extra sources of power may be needed to manage the system. One form of reserve that is used to manage this is Short Term Operating Reserve (STOR), which runs from 20 mins - 4 hours after a frequency event occurs. These tender results show the outcome of the associated tender round for every STOR year available in that tender round. > ** Please Note:** This datafeed is **no longer being updated** as we are now procuring STOR via daily auctions. More information about STOR daily auctions can be found here: [https://www.nationalgrideso.com/balancing-services/reserve-services/short-term-operating-reserve-stor](https://www.nationalgrideso.com/balancing-services/reserve-services/short-term-operating-reserve-stor)1Licence not specifiedabout 3 years ago
- In our role as Electricity System Operator (ESO), we balance generation and demand in real time. When demand is low, there may be a requirement for additional flexibility to balance generation and demand, as well as to achieve sufficient negative reserve and high frequency response. Restrictions associated with COVID-19 are likely to present lower demand periods for longer durations this summer than we have seen in the past. To help manage these changing system conditions we have implemented an Optional Downward Flexibility Management (ODFM) Service across the summer period. Optional Downward Flexibility Management (ODFM) is a service which allows the ESO to access downward flexibility that is not currently accessible in real time and expand our ability to control output from providers we cannot currently access through the Balancing Mechanism and the Platform for Ancillary Services. The documents in this dataset outline the contractual terms and associated templates. We shall also publish occasional market information here relating to requirements and market reports. > **Note: You can find market information reports and results for the ODFM service [here](https://data.nationalgrideso.com/ancillary-services/optional-downward-flexibility-management-odfm-market-information)**1Licence not specifiedabout 3 years ago
- Fast Reserve provides the rapid and reliable delivery of active power through an increased output from generation or a reduction in consumption from demand sources, following receipt of an electronic dispatch instruction from National Grid Electricity System Operator (ESO). These reports provide information about the volume of, and time periods over which, Fast Reserve has been required. **Note** - Since the introduction of Fast Reserve dispatch instructions to our [NBM ASDP report](https://data.nationalgrideso.com/ancillary-services/non-bm-ancillary-service-dispatch-platform-asdp-instructions) on our data portal in 2020, we have continued to provide the Fast Reserve Market Information report (MIR). As the NBM ASDP report is available in CSV format and contains all of the data that we use to create the monthly Fast Reserve MIR, we believe that market providers can now use the machine readable format to undertake their own analysis of the Fast Reserve service and create bespoke reporting. In addition, as Fast Reserve is only being procured through the Optional service, there is no tender results data to share as part of market information. Therefore, we intend to stop producing the MIR for future months, and just retain all the historical MIR on our data portal, with the June 2021 report being the last one published.1Licence not specifiedabout 3 years ago
- The National Grid Electricity System Operator (ESO) publishes an annual report on the performance of the National Electricity Transmission System (NETS) in Great Britain and fulfils Transmission Licence Standard Condition C17: Transmission System Security Standard and Quality of Service. This dataset provides details of any voltage or frequency excursions in the NETS. It is updated following any voltage or frequency excursions.1Licence not specifiedabout 3 years ago
- If demand ends up being greater than forecast, or there is unforeseen generation unavailability, extra sources of power may be needed to manage the system. One form of reserve that is used to manage this is Short Term Operating Reserve (STOR), which runs from 20 mins - 4 hours after a frequency event occurs. These market information reports are produced after each tender round and are designed to give existing and potential STOR participants an overall view of the tenders received. They give data on the tendered utilisation and availability prices, our forward contracted position and further details on the type and dynamics of the tendered units. **Please Note:** This datafeed **is no longer being updated** as we are not currently procuring STOR. More information about the future of STOR tenders can be found here: [https://www.nationalgrideso.com/balancing-services/reserve-services/short-term-operating-reserve-stor](https://www.nationalgrideso.com/balancing-services/reserve-services/short-term-operating-reserve-stor)1Licence not specifiedabout 3 years ago
- Please visit our ENCC Transparency Roadmap which highlights the activities we will deliver in the short to medium term. We welcome any further suggestions or questions regarding future data items or portal functionality, please get in touch with us at box.OpenData.ESO@nationalgrideso.com1Licence not specifiedover 3 years ago
- Data showing the demand suppression attributed to the Coronavirus Pandemic. Demand suppression is calculated by taking the National Demand + Embedded Generation outturns and comparing this with the modelled demand assuming no Coronavirus pandemic given the same model parameters (day of week, temperature, etc.). This is split into various periods of the day (timings are half-hour ending): + Night: 00:30 to 07:00 (Trough) + Morning: 07:30 to 13:00 (Peak) + Afternoon: 13:30 to 16:30 (Trough) + Peak: 17:00 to 20:30 (Peak) + Evening: 21:00 to 00:00 (Peak) It also shows the overall suppression (Whole Day). Demand drops over bank holidays are capturing both the pandemic effect as well as the effect of the bank holidays themselves which under normal conditions cause drops in demand also. We do not have sufficient data to separate these effects. This methodology works at a national level with a linear model using least squares regression and cannot be adapted for use in our regional time-based demand models. In agreement with Ofgem & BEIS we are ceasing the publication and reporting of the demand suppression assessment with effect of 19 May 2021. Data on demand suppression was being calculated using a comparison with pre-COVID demand levels, and we can no longer be sure that any changes are attributable to COVID alone. We hope that you found the ESO's assessment of the demand suppression insightful and useful.1Licence not specifiedover 4 years ago
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