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Leading service provider for Transmission System Operators (TSOs) in the European electricity market.

Through our single trading platform we auction cross-border transmission capacity rights. We also provide accounting (clearing and settlement), contracting, reporting, project support and IT services.

Auctions

On behalf of TSOs, we organize long and short-term auctions of transmission capacity rights.

We offer the following products: yearly, seasonal, quarterly, monthly, weekly, daily and intraday.

Auction results Auction calendar

350+

Registered market participants
18k+

Auctions per year
84

Allocation borders - Explicit auctions
80

Allocation borders - Market Coupling (Congestion revenue distribution)
38

TSOs serviced

Latest market messages

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[NTC DE-CH]: Special regime for NTC determination

Published: 24/06/2022 | 16:40by Transnet BW GmbH
IFA2 Capacity Curtailment on the GB<>FR border for delivery day 25/06/2022

Published: 24/06/2022 | 08:34by JAO
Capacity curtailment on the French-Spain border for business day 25/06/2022

Published: 24/06/2022 | 07:06by JAO
UMM_02: Risk of Partial Decoupling for one or more interconnectors

Published: 23/06/2022 | 11:32by JAO
Rejected prebids check for CH<>IT Intraday 2

Published: 22/06/2022 | 09:02by JAO
Annual report 2021

Published: 20/06/2022 | 10:54by JAO
eCAT maintenance on 21/06/2022

Published: 20/06/2022 | 08:44by JAO

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Dear Market Participants,

due to unavailabilities of conventional power plants in the TransnetBW control area it is possible that capacities from Germany to Switzerland will have to be reduced below the values calculated by the current NTC determination methodology.

TransnetBW will assess the grid situation daily and act on the NTCs from Germany to Switzerland accordingly. The NTC will be limited to a value between 700 MW and 2000 MW depending on the grid situation. This special regime is foreseen to be applied until business (energy delivery) day 7th of July. The NTCs from Switzerland to Germany will not be impacted.

Best regards,

TransnetBW

FR>GB

TSO(s) *:

National Grid Interconnectors Limited (NGIC) and RTE EDF Transport S.A. (RTE)

Identification of affected Long Term Transmission Rights

IFA2 FR>GB

Triggering event :

☒Curtailment to ensure operation remains within Operational Security Limits

☐Curtailment due to Force Majeure

☐Curtailment due to emergency situation

Affected volume in MW / hour for each concerned period :

25/06/2022

00:00 - 01:00	848
01:00 - 02:00	848
02:00 - 03:00	848
03:00 - 04:00	848
04:00 - 05:00	848
05:00 - 06:00	848
06:00 - 07:00	848
07:00 - 08:00	848
08:00 - 09:00	848
09:00 - 10:00	848
10:00 - 11:00	848
11:00 - 12:00	848
12:00 - 13:00	848
13:00 - 14:00	848
14:00 - 15:00	848
15:00 - 16:00	848
16:00 - 17:00	848
17:00 - 18:00	848
18:00 - 19:00	848
19:00 - 20:00	848
20:00 - 21:00	848
21:00 - 22:00	848
22:00 - 23:00	848
23:00 - 00:00	848

Amount of LTTR remaining after curtailment :

25/06/2022

00:00 - 01:00	848
01:00 - 02:00	848
02:00 - 03:00	848
03:00 - 04:00	848
04:00 - 05:00	848
05:00 - 06:00	848
06:00 - 07:00	848
07:00 - 08:00	848
08:00 - 09:00	848
09:00 - 10:00	848
10:00 - 11:00	0
11:00 - 12:00	0
12:00 - 13:00	0
13:00 - 14:00	0
14:00 - 15:00	0
15:00 - 16:00	0
16:00 - 17:00	0
17:00 - 18:00	0
18:00 - 19:00	848
19:00 - 20:00	848
20:00 - 21:00	848
21:00 - 22:00	848
22:00 - 23:00	848
23:00 - 00:00	848

Information on exact operational security limit(s) that are expected to be violated in the absence of curtailment *:

Thermal Limits

Why alternative measures are not sufficient to avoid the expected violation of operational security limit(s) *?

Capacity limitation due to unplanned maintenance

GB > FR

TSO(s) *:

National Grid Interconnectors Limited (NGIC) and RTE EDF Transport S.A. (RTE)

Identification of affected Long Term Transmission Rights

IFA2 GB>FR

Triggering event :

☒Curtailment to ensure operation remains within Operational Security Limits

☐Curtailment due to Force Majeure

☐Curtailment due to emergency situation

Affected volume in MW / hour for each concerned period:

25/06/2022

00:00 - 01:00	845
01:00 - 02:00	845
02:00 - 03:00	845
03:00 - 04:00	845
04:00 - 05:00	845
05:00 - 06:00	845
06:00 - 07:00	845
07:00 - 08:00	845
08:00 - 09:00	845
09:00 - 10:00	845
10:00 - 11:00	845
11:00 - 12:00	845
12:00 - 13:00	845
13:00 - 14:00	845
14:00 - 15:00	845
15:00 - 16:00	845
16:00 - 17:00	845
17:00 - 18:00	845
18:00 - 19:00	845
19:00 - 20:00	845
20:00 - 21:00	845
21:00 - 22:00	845
22:00 - 23:00	845
23:00 - 00:00	845

Amount of LTTR remaining after curtailment:

25/06/22

00:00 - 01:00	845
01:00 - 02:00	845
02:00 - 03:00	845
03:00 - 04:00	845
04:00 - 05:00	845
05:00 - 06:00	845
06:00 - 07:00	845
07:00 - 08:00	845
08:00 - 09:00	845
09:00 - 10:00	845
10:00 - 11:00	0
11:00 - 12:00	0
12:00 - 13:00	0
13:00 - 14:00	0
14:00 - 15:00	0
15:00 - 16:00	0
16:00 - 17:00	0
17:00 - 18:00	0
18:00 - 19:00	845
19:00 - 20:00	845
20:00 - 21:00	845
21:00 - 22:00	845
22:00 - 23:00	845
23:00 - 00:00	845

Information on exact operational security limit(s) that are expected to be violated in the absence of curtailment *:

Thermal Limits

Why alternative measures are not sufficient to avoid the expected violation of operational security limit(s) *?

Capacity limitation due to unplanned maintenance

1. TSO(s) :

   RTE, REE

2. Identification of affected Long Term Transmission Rights

   FR->ES

3. Triggering event :

   Curtailment to ensure operation remains within Operational Security Limits

4. Affected volume in MW / hour for each concerned period :

   25/06/2022

      00:00-01:00 1320.0 MW

      01:00-02:00 1320.0 MW

      02:00-03:00 1320.0 MW

      03:00-04:00 1320.0 MW

5. Amount of LTTR remaining after curtailment :

   25/06/2022

      00:00-01:00 1300 MW

      01:00-02:00 1300 MW

      02:00-03:00 1300 MW

      03:00-04:00 1300 MW

6. Information on exact operational limit(s) that are expected to be violated in the absence of curtailment :

   25/06/2022

      00:00-01:00 Network Security

      01:00-02:00 Network Security

      02:00-03:00 Network Security

      03:00-04:00 Network Security

7. Why alternative measures are not sufficient to avoid the expected violation of operational security limit(s) ? :

   The available remedial actions were assessed as insufficient or ineffective to avoid the violation of operational security limits

Dear Market Participants,

Please be aware that the Market Coupling process encounters severe technical issues or extraordinary market situations for the following interconnector(s):

DK1-DE

DK1-NL

In case of Partial Decoupling, another message will be sent shortly after 11:40 to announce the decoupling of the concerned interconnectors.

Disclaimer: The timings are expressed as CET timings

Therefore, if relevant, we advise you to update your shadow bids at JAO eCAT platform before 11:35.

Operations Team

Dear Market Participant,

Please check the acknowledgement of your converted prebids for the auction IT-CH-I-HOURLY1224-220622-01 if they are accepted. In case of rejection, please resubmit it again.

Thank you.

Best regards

Operations Team

Dear Stakeholders,

The last year for JAO was a challenge! To find out more details on how we executed our business development strategy, please check the Annual report 2021. We are proud of our employees and grateful for their dedication, commitment, and hard work. We thank all Stakeholders and our Shareholders for their support. We believe that together we can make 2022 even better.

Kind regards,

JAO team

Dear Market Participants,

We would like to inform you that e-CAT will be unavailable on 21/06/2022 from 18:00 to 19:00 CEST due to a maintenance.

We apologise for the inconvenience caused.

Best regards,

Operations Team

Resource Center

This section contains key information for market participants such as user guides, forms, auction rules, nomination deadlines and other documents.

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About us

We started as a shared auction platform for transmission capacity across Central Western Europe in 2008. Over time, we became the operator of the Single Allocation Platform and therefore the leading trading platform for European Transmission System Operators.

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We created a user guide to support the onboarding of market participants. Learn more about the steps to register, the required documents and our service desk platform.

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