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Markets
Markets
Learn how the different electricity markets operate and timelines they work on.
Balancing Market
The Balancing Market determines the imbalance settlement price for settles of the TSO's balancing actions.

Joining the Balancing Market
Capacity Market

Joining the Capacity Market

Capacity Auction Timetable
Guarantees of Origin

Fuel Mix Disclosure

Green Source Product Verification
Market Data
Market Data
View the full range of static and dynamic reports available to download.
Static Reports
See libraries of flat file outputs created by the SEMO Central Market Systems.

Historic Market Data
Dynamic Reports
View market data in online charts or download the data.
Settlement Calendar
Publication dates for settlement statements and documents, and due dates for payments in and out.
Publications
Publications
See market related documentation such as monthly and quarterly external reports, generator outages and meeting minutes.
General Publications

Market Parameters
MO Performance

TSO Responsibilities
AoLR
Rules & Modifications
Rules & Modifications
View all the information you might need on rules and modifications for the Balancing and Capacity Markets.
Balancing Market Modifications
Modifications to the Balancing Market Trading and Settlement Code.

Balancing Market Committee Members

Balancing Market Elections

Balancing Market Rules

Submit a Balancing Market Modification Proposal
Capacity Market Modifications
Modifications to the Capacity Market Code.

Capacity Market Rules

Submit a Capacity Markey Modification Proposal
Training
Training
Training is intended to provide the learning materials that will help participants fulfil their role in the Markets.
Modules
View the courses that you can currently take to learn about fulfilling your market obligations.
Library
The library provides access to all of the self-learning and instructor-led training materials.
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Training Calendar
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TEST

TEST

TEST

Affected Period

Status
Open

Category
Balancing

Run Type

Created
18/02/2026 09:58

Last Updated
18/02/2026 10:00

TEST

2026

Republic of Ireland

The Oval, 160 Shelbourne Road, Ballsbridge, Dublin 4, D04 FW28.

Northern Ireland

Castlereagh House, 12 Manse Road, Belfast, BT6 9RT.

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Republic of Ireland

The Oval, 160 Shelbourne Road, Ballsbridge, Dublin 4, D04 FW28.

Northern Ireland

Castlereagh House, 12 Manse Road, Belfast, BT6 9RT.

Subscribe
Market Messages
Events
Links
About SEMO

Privacy Statement
Cookies
Disclaimer
Web Accessibility
Site Map