Delivery Body Updates & Events

Overview

The Four-Year-Ahead Capacity Market Auction for Delivery Year 2028/29 (T-4) will take place from 11th March 2025 to 12th March 2025.

This page provides important updates on milestones, pre-auction activities, and key dates. For more detailed information, please visit our Auction guidance website here.

Key Dates

Planning Consent Deadline

Each Applicant for a Prospective Generating CMU must declare they have obtained or will obtain all Relevant Planning Consents required for the construction and commissioning of the Prospective Generating Plant (excluding any ancillary infrastructure associated with, but not comprised in, the plant) and have the legal right to use the land where the CMU is or will be located. For more information, visit our guidance here. The deadline for T-4 is the 7th February 2025.

Confirmation of Entry Window

All Applicants for Prequalified New Build Generating/Interconnector CMUs, Refurbished Generating/Interconnector CMUs, and Proven/Unproven DSR CMUs must confirm their participation as a Bidder for the T-4 Auction. This must be completed within the Confirmation of Entry window, from 09:00 on 18th February 2025 to 17:00 on 25th February 2025. Failure to do so will result in the CMU not being enrolled in the Auction. For more information, please visit our guidance here.

Mock Auction

The T-4 Mock Auction on 27th February 2025 provides participants with the opportunity to verify their credentials and CMU portfolio before the live T-4 Auction. While not mandatory, it is highly recommended to log in and review details. Participants can practice submitting bids and DBAs using a DB script. Mock Auction guidance will be issued a few days prior to the event.

Live Auction

The T-4 Live Auction will take place on 11th March 2025. All activities for the Auction are to be completed within 2 days. The first round of each day will last 1 hour, with subsequent rounds lasting 30 minutes each. There will be a 15-minute recess between each round to allow the Auctioneer and the EMR Delivery Body to verify the round results. Round-by-round updates will be available here.

When the Auction clears, the EMR Delivery Body will announce the Clearing Price range during the 15-minute recess after the round. The Provisional Results Report will be published later that evening or the following morning before 9AM, confirming the Clearing Price and the successful CMUs.

For more information on our Auction, please see our Auction Readiness slide pack here.

Auction Results Day (ARD) and Capacity Agreement Notice (CAN) Release

Auction Results Day takes place 8 working days after the Auction clears. The T-4 Final Result Report will be published by the EMR Delivery Body either on 21st March or 24th March 2025, depending on when the Auction clears.

This year, Capacity Agreement Notices (CANs) will be issued 10 working days after Auction Results Day, on either 4th April or 7th April 2025, depending on when the Auction clears.