Electricity Capacity Market Notice Cancelled

The Capacity Market Notice originally active from has been cancelled from 6:30pm on Friday 8th January 2021

Electricity Capacity Market Notice Currently Active

Commencement time of notice
Circumstances that triggered notice
Margin below threshold set out in Capacity Market Rules
Transmission Demand and Operating Margin (MW)
45,081
Aggregate Capacity of BM Units expected (MW)
45,275
Additional Capacity (MW)
No definitive information regarding additional capacity is currently available to the Electricity System Operator.

Capacity Market participants are advised to review the System Warnings page on BMRS for potential additional operational warnings from the Electricity System Operator. This notice is published pursuant to Rule 8.4.6 / 11.3.5 of the Capacity Market Rules

Participants are also advised to pay close attention to De-rated Margin (DRM) information on the BMRS website that will be updated 3 times (4 hour, 2 hour and 1 hour ahead) in advance of the "commencement time" of this Capacity Market Notice.

Electricity Capacity Market Notice Cancelled

The Capacity Market Notice originally active from has been cancelled from 4:00pm on Thursday 3rd December 2020

Electricity Capacity Market Notice Currently Active

Commencement time of notice
Circumstances that triggered notice
Margin below threshold set out in Capacity Market Rules
Transmission Demand and Operating Margin (MW)
46,017
Aggregate Capacity of BM Units expected (MW)
46,303
Additional Capacity (MW)
No definitive information regarding additional capacity is currently available to the Electricity System Operator.

Capacity Market participants are advised to review the System Warnings page on BMRS for potential additional operational warnings from the Electricity System Operator. This notice is published pursuant to Rule 8.4.6 / 11.3.5 of the Capacity Market Rules

Participants are also advised to pay close attention to De-rated Margin (DRM) information on the BMRS website that will be updated 3 times (4 hour, 2 hour and 1 hour ahead) in advance of the "commencement time" of this Capacity Market Notice.

Message from Electricity System Operator

Upcoming URL Change

On Tuesday 24th November 2020 at 10am the GB Electricity Capacity Market Notice website will be changing URL from gbcmn.nationalgrid.co.uk to gbcmn.nationalgrideso.com.

The new URL is already available, but all pages and links from the old URL will be redirected to the new URL from 10am on Tuesday 24th November 2020.

At this time email notifications will also change to be sent from noreply@gbcmn.nationalgrideso.com.

If you have any questions or concerns, please email emr@nationalgrideso.com.

Electricity Capacity Market Notice Cancelled

The Capacity Market Notice originally active from has been cancelled from 5:30pm on Tuesday 15th September 2020

Electricity Capacity Market Notice Currently Active

Commencement time of notice
Circumstances that triggered notice
Margin below threshold set out in Capacity Market Rules
Transmission Demand and Operating Margin (MW)
37,368
Aggregate Capacity of BM Units expected (MW)
37,488
Additional Capacity (MW)
No definitive information regarding additional capacity is currently available to the Electricity System Operator.

Capacity Market participants are advised to review the System Warnings page on BMRS for potential additional operational warnings from the Electricity System Operator. This notice is published pursuant to Rule 8.4.6 / 11.3.5 of the Capacity Market Rules

Participants are also advised to pay close attention to De-rated Margin (DRM) information on the BMRS website that will be updated 3 times (4 hour, 2 hour and 1 hour ahead) in advance of the "commencement time" of this Capacity Market Notice.

Message from Electricity System Operator

Despite the Capacity Market entering a “standstill period” last week following the ECJ ruling,  we have decided to continue operating the Capacity Market Notice (CMN) process.  This is because with 2,500+ subscribers we now see the potential publication of CMNs as a critical route through which tight electricity margins may be communicated to the market.

We also recommend accessing other information sources during tight margin periods, including:-

  • System Warnings page on the BMRS website. This is where National Grid ESO communicates any critical operational messages with the industry. These include Electricity Margin Notice (EMN) (previously known as Notice of Inadequate System Margin (NISM)), High Risk of Demand Reduction (HRDR) and Demand Control Imminent (DCI).
     
  • De-rated Margin values available on the BMRS website. These values follow a similar calculation to the Capacity Market Notice trigger and are communicated by National Grid ESO on a Day Ahead, 8hr, 4hr, 2hr and 1hr profile to give advance notice of potentially tight Settlement Periods on the Transmission System.

If you have any questions please contact National Grid ESO directly at emr@nationalgrid.com.

Message from Electricity System Operator

TEST MESSAGE

With the start of the new Capacity Market delivery year on 01 October 2018, this is a test of the Capacity Market Notice (CMN) website e-mail and text alert process.

We have manually issued this 'Message from Electricity System Operator' to test the email and text alert notification process based on the selections you made when subscribing to the website.

If you did not receive the expected email or text alert notification, please review your account settings by using the 'My Subscription' functionality on this website (top right of page).  If you have any further queries please contact National Grid ESO directly at emr@nationalgrid.com.

Message from System Operator

TEST MESSAGE

With the start of the new Capacity Market delivery year on 01 October 2017, this is a test of the Capacity Market Notice (CMN) website e-mail and text alert process.

We have manually issued this 'Message from System Operator' to test the email and text alert notification process based on the selections you made when subscribing to the website.

If you did not receive the expected email or text alert notification, please review your account settings by using the 'My Subscription' functionality on this website (top right of page).  If you have any further queries please contact National Grid directly at emr@nationalgrid.com.