
Transmission Exploring the Balancing Mechanism with Claire Dykta (Head of Markets at ESO)
Nov 2, 2023
Claire Dykta, Head of Markets at the Electricity System Operator (ESO), sheds light on the intricate workings of the Balancing Mechanism. She discusses the upcoming Open Balancing Platform, which aims to streamline asset management. Claire also covers the impact of high renewables on system stability, the vital role of batteries in frequency response, and the importance of measuring skip rates. With insights on market design and investor confidence, she emphasizes the need for adaptability in the evolving energy landscape.
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How The Balancing Mechanism Operates
- The Balancing Mechanism is ESO's operational tool used after wholesale gate closure to fine-tune supply and demand second-by-second.
- ESO stacks bids and offers to select the cheapest or most suitable actions to keep the system balanced.
High Renewables Change The Problem Set
- A high-renewable system creates new problems beyond simple megawatt shortfalls, like lower inertia and voltage issues.
- The control room must solve more complex, non-megawatt problems as the grid decarbonizes.
Train Ticket Analogy For Transmission Constraints
- Claire used a train-ticket analogy to explain regional congestion: excess Scottish wind may need to be paid down at source.
- Then ESO must procure generation elsewhere (e.g., in England) to replace the curtailed megawatts.
