What is the Stability Market Design project?

The Stability Market Design project will consider current GB stability arrangements and investigate the best option for an end-to-end stability design. This could allow the ESO to start to develop a stability market and best optimise long term and short-term stability procurement.

Traditionally synchronous generation has provided stability requirements (inertia, Short Circuit Level & reactive power support) as a natural by-product. As more non-synchronous generation enters the system, the ESO needs alternative sources of stability.

Stability pathfinders allow us to test procurement approaches for long term stability requirements, but the ESO still rely on the dispatch of synchronous generation in the Balancing Mechanism to ensure stability. The development of a stability market could offer the ESO a route to access stability services through an open, transparent, and competitive market.


Project Data

DurationSeptember 2021 - February 2022
FundingNetwork Innovation Allowance (NIA)
PartnersNational Grid ESO, AFRY

More information on the stability market design project


Latest updates

The Stability Market Design project is starting in September 2021. Events Information and material will be shared here when available.

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NOA pathfinders

Future of balancing services 


Project approach

This project will be a desk-based study run by ESO, AFRY and wider stakeholders.

The project will: 

  • setting the scene to understand the future world and define the objectives to evaluate different market design options.
  • Using a “building blocks” approach, collate them into ‘straw man’ design options and develop detailed end-to-end designs.
  • Assess the different market design options against the assessment criteria
  • Recommend a potential high-level stability market design.

Stakeholders will be able to input in this project through various workshops and questionnaires. Engagement will take place at different stages of this project to gather feedback on the different options, the assessment, etc.