If you’d like to provide feedback on the ESO Data Portal, please contact us at box.OpenData.ESO@nationalgrideso.com

Monthly BSUOS Forecast Summary February 2021

Table Information

Month

Title Month & Year
Type yearmonth
Description The month Balancing Services Use of System (BSUoS) forecasted for.
Comment N/A
Example Apr-20
Unit N/A

Energy Imbalance (£m)

Title Energy Imbalance
Type number
Description Energy imbalance is the difference between the amount of energy generated in real time, the amount of energy consumed during that same time, and the amount of energy sold ahead of the generation time for that specific time period. The monthly energy imbalance cost can be negative or positive depending whether the market was predominantly long or short.
Comment N/A
Example 8.8247984
Unit £

Operating Reserve (£m)

Title Operating Reserve
Type number
Description Positive Reserve that is managed in the BM, through trades, or SO-SO services. Positive Reserve is required to operate the transmission system securely, and provides the reserve energy required to meet the demand when there are shortfalls, due to demand changes or generation breakdowns.
Comment N/A
Example 7.765180802
Unit £

STOR (£m)

Title Short Term Operating Reserve
Type number
Description Short-term Operating Reserve (STOR) allows us to have extra power in reserve for when we need it. It helps us meet extra demand at certain times of the day or if there’s an unexpected drop in generation.
Comment N/A
Example 7.765180802
Unit £

Constraints - E&W (£m)

Title Constraints - England & Wales
Type number
Description Actions taken by the ENCC for non energy system management reasons in England and Wales.
Comment N/A
Example 56.36084798
Unit £

Constraints - Cheviot (£m)

Title Constraints - Cheviot
Type number
Description Actions taken by the ENCC for non energy system management reasons across England and Scotland border.
Comment N/A
Example 16.31200015
Unit £

Constraints - Scotland (£m)

Title Constraints - Scotland
Type number
Description Actions taken by the ENCC for non energy system management reasons in Scotland.
Comment N/A
Example 16.31200015
Unit £

Constraints - AS (£m)

Title Constraints - Ancillary Services
Type number
Description Actions taken for non energy system management reasons via balancing services contracts.
Comment N/A
Example 0
Unit £

Negative Reserve (£m)

Title Negative Reserve
Type number
Description A Negative Reserve service can provide the flexibility to reduce generation or increase demand to ensure supply and demand are balanced. The service is held in reserve to cover unforeseen fluctuations in demand, or generation from demand side PV and wind.
Comment N/A
Example 0.300270952
Unit £

Fast Reserve (£m)

Title Fast Reserve
Type number
Description 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. Fast Reserve service must commence within two minutes following instruction, at rates of 25MW or greater per minute and providing a minimum of 50MW.
Comment N/A
Example 7.752380091
Unit £

Response (£m)

Title Response
Type number
Description Response is a service we use to keep the system frequency close to 50Hz. Fast acting generation and demand services are held in readiness to manage any fluctuation in the system frequency, which could be caused by a sudden loss of generation or demand. There are three types of frequency response known as “primary”, “secondary” and “high”. The difference between primary and secondary is the speed at which they act recover the system frequency. Both primary and secondary react to low frequency conditions, and high response.
Comment N/A
Example 11.54459979
Unit £

Other Reserve (£m)

Title Other Reserve
Type number
Description We currently have several other reserve services that we are not actively procuring and are under review. The aim is to move away from services procured outside of competitive mechanisms, so we do not intend to procure additional volume under the current frameworks.
Comment N/A
Example 15.00488514
Unit £

Reactive (£m)

Title Reactive
Type number
Description We manage voltage levels across the grid to make sure we stay within our operational standards and avoid damage to transmission equipment. Voltage levels are controlled by reactive power, and we pay providers to help manage voltage levels on the system by controlling the volume of reactive power that they absorb or generate.
Comment We manage voltage levels across the grid to make sure we stay within our operational standards and avoid damage to transmission equipment. Voltage levels are controlled by reactive power, and we pay providers to help manage voltage levels on the system by controlling the volume of reactive power that they absorb or generate.
Example 6.559580884
Unit £

Minor Components (£m)

Title Any actions that don’t meet the defined rules to categorise costs. This also includes costs which are not specific to an ancillary service.
Type number
Description Actions taken by the ENCC for non energy system management reasons across England and Scotland border.
Comment N/A
Example 1.545159449
Unit £

Black Start (£m)

Title Black Start
Type number
Description Black start is the procedure we use to restore power in the event of a total or partial shutdown of the national electricity transmission system. It means we can start up each power station in turn and reconnect them to the grid one by one. In this sort of emergency, a power station can get its electricity supply from a small back-up generating plant on the same site. But not all power stations have one of these, so we have agreements with other suppliers. They help us make sure we have enough black start arrangements in place in case we need them.
Comment N/A
Example 3.821917808
Unit £

Total (£m)

Title Total
Type number
Description Total balancing cost.
Comment N/A
Example 135.8678819
Unit £

Demand

Title Demand
Type number
Description Balancing Service Use of System volume.
Comment N/A
Example 42.20939029
Unit TWh

Estimated Internal BSUos(£m)

Title Estimated Internal Balancing Service Use of System (£m)
Type number
Description The internal charges incurred by NGESO to fulfil system operator obligations.
Comment N/A
Example 23.23179178
Unit £

Esitmated NGET Profit/(Loss)

Title Esitmated NGET Profit/(Loss)
Type number
Description Recovery of the estimated revenue paid to National Grid Electricity System Operator.under the incentive scheme. Profit is positive and a loss is represented as a negative.
Comment N/A
Example -2.533757225
Unit £

Esitimated BSUoS Charge (£/MWh)

Title Estimated Balancing Service Use of System Charge
Type number
Description Estimation of Balancing Service Use of System for the month.
Comment N/A
Example 3.622845258
Unit £

Constraints

Title Constraints
Type number
Description Esitmated NGET Profit/(Loss).
Comment N/A
Example 79.11725174
Unit £

ALoMCP

Title Accelerated Loss of Mains Change Programme (ALoMCP)
Type number
Description Recovery of the costs of the Accelerated Loss of Mains Change Programme (ALoMCP). For further details about the programme see the operability strategy report.
Comment N/A
Example 2.4
Unit £