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.
Field Demonstration of the Conventional Steam Drive Process with Ancillary Materials, First Annual Report, October 1979-September 1980
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 **Note:** This datafeed **is no longer being updated** as we are not currently procuring Fast Reserve.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)
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)**
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)
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)