Capacity Market Register | National Energy System Operator
Summary
NESO publishes weekly Capacity Market Register data tracking all applications, successful bidders, and capacity agreements across auctions. The register includes component-level detail and historical changes, updated with one-hour frequency. Four CSV datasets cover current status and change histories for both components and Capacity Market Units.
Why it matters
Administrative transparency for an existing market mechanism rather than reform. The data enables market participants to track competition and success rates, but does not change the capacity market's fundamental structure or incentives.
Key facts
- •Weekly update frequency
- •Four CSV datasets available
- •Covers all capacity auction applications and agreements
- •Component-level granularity
- •Historical change tracking
Areas affected
Related programmes
Memo
Capacity Market Register | National Energy System Operator Show/Hide Menu Toggle Add to favourites Close tooltip Sign in to add this page to your favourites Sign in or register Show favourites Close Close tooltip Sign in or register to manage your favourites Sign in or register Help You are now signed in Visit My NESO account to view and manage your dataset subscriptions. Maybe later Go to your account Capacity Market Register The EMR Delivery Body (DB) has an obligation to create and maintain Capacity Market Registers (CMR) for all capacity market auctions. Each CMR holds a record of all applications made to the Delivery Body ahead of the relevant Capacity Auction as well as details of those who were successful in obtaining a Capacity Agreement and any enduring obligations. The Clearing Price and Aggregate volume of Capacity Agreements Awarded for each auction is published on the Capacity Market Portal Knowledge site here Electricity Market Reform Sign in to subscribe and receive the latest updates Sign in or register 4 Data Files Filters Last Changed From To Format CSV (4) Name Format Last Changed Sort ascending Download Explore Components CSV 1 hour ago Download (CSV) view Component History CSV 1 hour ago Download (CSV) view Capacity Market Unit (CMU) History CSV 1 hour ago Download (CSV) view Capacity Market Unit (CMU) CSV 1 hour ago Download (CSV) view Additional Information Field Value Date Created February 18, 2025 at 4:08 PM (UTC+00:00) Rights NESO Open Data Licence Update frequency Weekly Tags Capacity Market Electricity Market Reform Subscribable cURL integration Copied # Get a list of dataset's resources curl -L -s https://api.neso.energy/api/3/action/datapackage_show?id=capacity-market-register | grep path # Get resources curl -L https://api.neso.energy/dataset/0b3ab475-5622-4465-8825-9d35d03bb28b/resource/790f5fa0-f8eb-4d82-b98d-0d34d3e404e8/download/component_20260325.csv curl -L https://api.neso.energy/dataset/0b3ab475-5622-4465-8825-9d35d03bb28b/resource/015453e0-c73c-416a-901d-623f914c8e70/download/component_changes_20260325.csv curl -L https://api.neso.energy/dataset/0b3ab475-5622-4465-8825-9d35d03bb28b/resource/cd034839-73e7-4c37-b4e5-6ebea25627d8/download/cmu_changes_20260325.csv curl -L https://api.neso.energy/dataset/0b3ab475-5622-4465-8825-9d35d03bb28b/resource/25a5fa2e-873d-41c5-8aaf-fbc2b06d79e6/download/cmu_20260325.csv Show more For any queries or feedback please contact [email protected] logo--facebook