Cover of Annual report 2024
See Our

Annual Report

Read here

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
OPS
  • 500+
    Registered market participants
  • 26k+
    Auctions held annually
  • 100%
    Auction tool availability
  • 80+
    Employees
  • 50
    TSOs serviced

Latest market messages

Go to Message Board
Go to Message board

Capacity Curtailment on the EE-LV border for delivery period 26-04-2026

by JAO

1. TSO(s)*:

AST

2. Identification of affected Long Term Transmission Rights:

EE-LV

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

26-04-2026 11:00 - 12:00 450 MW

26-04-2026 12:00 - 13:00 450 MW

26-04-2026 13:00 - 14:00 450 MW

26-04-2026 14:00 - 15:00 450 MW

26-04-2026 15:00 - 16:00 450 MW

26-04-2026 16:00 - 17:00 450 MW

26-04-2026 17:00 - 18:00 450 MW

26-04-2026 18:00 - 19:00 450 MW

26-04-2026 19:00 - 20:00 450 MW

26-04-2026 20:00 - 21:00 450 MW

5. Amount of LTTR remaining after curtailment:

26-04-2026 11:00 - 12:00 403 MW

26-04-2026 12:00 - 13:00 387 MW

26-04-2026 13:00 - 14:00 380 MW

26-04-2026 14:00 - 15:00 380 MW

26-04-2026 15:00 - 16:00 380 MW

26-04-2026 16:00 - 17:00 380 MW

26-04-2026 17:00 - 18:00 380 MW

26-04-2026 18:00 - 19:00 380 MW

26-04-2026 19:00 - 20:00 380 MW

26-04-2026 20:00 - 21:00 380 MW

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

Nord Pool - UMM Platform as well as the capacity already allocated on The Baltic balancing Market for balancing capacity sharing at Transparency Platform

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

There are no alternatives to the curtailment of the affected LTTRs.

*According to section 57.3 of the EU HAR, this field can be filled in within 24 hours after the initial publication

Capacity Curtailment on the SI-AT border for delivery period 26-04-2026

by JAO

1. TSO(s)*:

APG

2. Identification of affected Long Term Transmission Rights:

SI-AT

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

26-04-2026 07:00 - 08:00 370 MW

26-04-2026 08:00 - 09:00 370 MW

26-04-2026 09:00 - 10:00 370 MW

26-04-2026 10:00 - 11:00 370 MW

26-04-2026 11:00 - 12:00 370 MW

26-04-2026 12:00 - 13:00 370 MW

26-04-2026 13:00 - 14:00 370 MW

26-04-2026 14:00 - 15:00 370 MW

26-04-2026 15:00 - 16:00 370 MW

26-04-2026 16:00 - 17:00 370 MW

26-04-2026 17:00 - 18:00 370 MW

5. Amount of LTTR remaining after curtailment:

26-04-2026 07:00 - 08:00 140 MW

26-04-2026 08:00 - 09:00 144 MW

26-04-2026 09:00 - 10:00 140 MW

26-04-2026 10:00 - 11:00 157 MW

26-04-2026 11:00 - 12:00 163 MW

26-04-2026 12:00 - 13:00 178 MW

26-04-2026 13:00 - 14:00 177 MW

26-04-2026 14:00 - 15:00 164 MW

26-04-2026 15:00 - 16:00 163 MW

26-04-2026 16:00 - 17:00 181 MW

26-04-2026 17:00 - 18:00 201 MW

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

Expected violation of operational security limits of physical transmission assets.

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

During the CC process, all the remedial actions provided by the TSOs are already considered by the CCC in the calculation.

*According to section 57.3 of the EU HAR, this field can be filled in within 24 hours after the initial publication

Capacity Curtailment on the HU-AT border for delivery period 26-04-2026

by JAO

1. TSO(s)*:

APG

2. Identification of affected Long Term Transmission Rights:

HU-AT

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

26-04-2026 07:00 - 08:00 295 MW

26-04-2026 08:00 - 09:00 295 MW

26-04-2026 09:00 - 10:00 295 MW

26-04-2026 10:00 - 11:00 295 MW

26-04-2026 11:00 - 12:00 295 MW

26-04-2026 12:00 - 13:00 295 MW

26-04-2026 13:00 - 14:00 295 MW

26-04-2026 14:00 - 15:00 295 MW

26-04-2026 15:00 - 16:00 295 MW

26-04-2026 16:00 - 17:00 295 MW

26-04-2026 17:00 - 18:00 295 MW

5. Amount of LTTR remaining after curtailment:

26-04-2026 07:00 - 08:00 232 MW

26-04-2026 08:00 - 09:00 215 MW

26-04-2026 09:00 - 10:00 211 MW

26-04-2026 10:00 - 11:00 215 MW

26-04-2026 11:00 - 12:00 232 MW

26-04-2026 12:00 - 13:00 243 MW

26-04-2026 13:00 - 14:00 243 MW

26-04-2026 14:00 - 15:00 242 MW

26-04-2026 15:00 - 16:00 242 MW

26-04-2026 16:00 - 17:00 266 MW

26-04-2026 17:00 - 18:00 270 MW

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

Expected violation of operational security limits of physical transmission assets.

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

During the CC process, all the remedial actions provided by the TSOs are already considered by the CCC in the calculation.

*According to section 57.3 of the EU HAR, this field can be filled in within 24 hours after the initial publication

Capacity Curtailment on the AT-CZ border for delivery period 26-04-2026

by JAO

1. TSO(s)*:

APG

2. Identification of affected Long Term Transmission Rights:

AT-CZ

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

26-04-2026 07:00 - 08:00 350 MW

26-04-2026 08:00 - 09:00 350 MW

26-04-2026 09:00 - 10:00 350 MW

26-04-2026 10:00 - 11:00 350 MW

26-04-2026 11:00 - 12:00 350 MW

26-04-2026 12:00 - 13:00 350 MW

26-04-2026 13:00 - 14:00 350 MW

26-04-2026 14:00 - 15:00 350 MW

26-04-2026 15:00 - 16:00 350 MW

26-04-2026 16:00 - 17:00 350 MW

26-04-2026 17:00 - 18:00 350 MW

5. Amount of LTTR remaining after curtailment:

26-04-2026 07:00 - 08:00 243 MW

26-04-2026 08:00 - 09:00 210 MW

26-04-2026 09:00 - 10:00 131 MW

26-04-2026 10:00 - 11:00 174 MW

26-04-2026 11:00 - 12:00 207 MW

26-04-2026 12:00 - 13:00 209 MW

26-04-2026 13:00 - 14:00 215 MW

26-04-2026 14:00 - 15:00 224 MW

26-04-2026 15:00 - 16:00 242 MW

26-04-2026 16:00 - 17:00 273 MW

26-04-2026 17:00 - 18:00 285 MW

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

Expected violation of operational security limits of physical transmission assets.

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

During the CC process, all the remedial actions provided by the TSOs are already considered by the CCC in the calculation.

*According to section 57.3 of the EU HAR, this field can be filled in within 24 hours after the initial publication

Capacity Curtailment on the AT-DE border for delivery period 26-04-2026

by JAO

1. TSO(s)*:

APG

2. Identification of affected Long Term Transmission Rights:

AT-DE

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

26-04-2026 07:00 - 08:00 3620 MW

26-04-2026 08:00 - 09:00 3620 MW

26-04-2026 09:00 - 10:00 3620 MW

26-04-2026 10:00 - 11:00 3620 MW

26-04-2026 11:00 - 12:00 3620 MW

26-04-2026 12:00 - 13:00 3620 MW

26-04-2026 13:00 - 14:00 3620 MW

26-04-2026 14:00 - 15:00 3620 MW

26-04-2026 15:00 - 16:00 3620 MW

26-04-2026 16:00 - 17:00 3620 MW

5. Amount of LTTR remaining after curtailment:

26-04-2026 07:00 - 08:00 3053 MW

26-04-2026 08:00 - 09:00 2626 MW

26-04-2026 09:00 - 10:00 1354 MW

26-04-2026 10:00 - 11:00 1797 MW

26-04-2026 11:00 - 12:00 2372 MW

26-04-2026 12:00 - 13:00 2205 MW

26-04-2026 13:00 - 14:00 2630 MW

26-04-2026 14:00 - 15:00 2652 MW

26-04-2026 15:00 - 16:00 2558 MW

26-04-2026 16:00 - 17:00 3284 MW

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

Expected violation of operational security limits of physical transmission assets.

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

During the CC process, all the remedial actions provided by the TSOs are already considered by the CCC in the calculation.

*According to section 57.3 of the EU HAR, this field can be filled in within 24 hours after the initial publication

Capacity Curtailment on the CH-IT border for delivery period 26-04-2026

by JAO

1. TSO(s)*:

SWISSGRID

2. Identification of affected Long Term Transmission Rights:

CH-IT

3. Triggering event:

Curtailment due to Curtailment to ensure operation remains within Operational Security Limits

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

26-04-2026 09:00 - 10:00 282 MW

26-04-2026 10:00 - 11:00 282 MW

26-04-2026 11:00 - 12:00 282 MW

26-04-2026 12:00 - 13:00 282 MW

26-04-2026 13:00 - 14:00 282 MW

26-04-2026 14:00 - 15:00 282 MW

26-04-2026 15:00 - 16:00 282 MW

26-04-2026 16:00 - 17:00 282 MW

5. Amount of LTTR remaining after curtailment:

26-04-2026 09:00 - 10:00 0 MW

26-04-2026 10:00 - 11:00 0 MW

26-04-2026 11:00 - 12:00 0 MW

26-04-2026 12:00 - 13:00 0 MW

26-04-2026 13:00 - 14:00 0 MW

26-04-2026 14:00 - 15:00 0 MW

26-04-2026 15:00 - 16:00 0 MW

26-04-2026 16:00 - 17:00 0 MW

Capacity Curtailment on the SI-IT border for delivery period 26-04-2026

by JAO

1. TSO(s)*:

2. Identification of affected Long Term Transmission Rights:

SI-IT

3. Triggering event:

Curtailment to ensure operation remains within Operational Security Limits

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

26-04-2026 08:00 - 09:00 59 MW

26-04-2026 09:00 - 10:00 59 MW

26-04-2026 10:00 - 11:00 59 MW

26-04-2026 11:00 - 12:00 59 MW

26-04-2026 12:00 - 13:00 59 MW

26-04-2026 13:00 - 14:00 59 MW

26-04-2026 14:00 - 15:00 59 MW

26-04-2026 15:00 - 16:00 59 MW

26-04-2026 16:00 - 17:00 59 MW

5. Amount of LTTR remaining after curtailment:

26-04-2026 08:00 - 09:00 32 MW

26-04-2026 09:00 - 10:00 3 MW

26-04-2026 10:00 - 11:00 3 MW

26-04-2026 11:00 - 12:00 3 MW

26-04-2026 12:00 - 13:00 3 MW

26-04-2026 13:00 - 14:00 3 MW

26-04-2026 14:00 - 15:00 3 MW

26-04-2026 15:00 - 16:00 3 MW

26-04-2026 16:00 - 17:00 3 MW

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

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

*According to section 57.3 of the EU HAR, this field can be filled in within 24 hours after the initial publication

Resource Center

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

Go to resources

Our certifications

JAO has successfully implemented internationally recognized management systems and is now officially certified for ISO/IEC 27001:2022 – the global standard for Information Security Management Systems and for ISO 9001 – the international standard for Quality Management Systems. 

ISO
IT

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.

Get to know us

Register your company

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.

Go to registration
JAO workers

Frequently asked questions

Check out the common questions and our answers on how to use the auction platform.

Go to FAQ

Do you need support?

If you can't find an answer to your question, our team is here to help!

Go to service desk