GB System Inertia - 2017-2018
Estimate of the market provided and outturn inertia for the GB Transmission System per settlement period.
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Table Information
Settlement Date
Title | Settlement Date |
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Type | date |
Description | Settlement Date |
Comment | |
Example | 2021-06-30 |
Unit |
Settlement Period
Title | Settlement Period |
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Type | integer |
Description | Settlement Period |
Comment | |
Example | 1 |
Unit |
Outturn Inertia
Title | Outturn Inertia |
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Type | integer |
Description | Estimate of GB Transmission system inertia in GVAs. This is the sum of the estimated inertia of each of the generators with a power output > 15 MW or operating to provide inertia and an estimate of the demand side contribution to system inertia. |
Comment | |
Example | 200 |
Unit | GVAs |
Market Provided Inertia
Title | Market Provided Inertia |
---|---|
Type | integer |
Description | Market Provided Inertia |
Comment | This is calculated in the same way as the outturn inertia but with the position of the generators recalculated to remove the impact of actions taken by NGESO. These include: 1: Trades: BMU specific trades. Trades to manage constraints, mitigate RoCoF risk and voltage requirements. 2: Bid Offer Acceptance (BOAs): Instructions from NGESO to a participant in the balancing mechanism. Participants must then act to ensure that their BM Units produce the required level of output. |
Example | 200 |
Unit | GVAs |