About us
We are a service company that hosts Europe's single leading trading platform( e-CAT) for cross-border transmission capacity. On behalf of TSOs, we auction the available long and short-term transmission capacity rights on all internal EU borders. We also organize shadow auctions, which act as backup for Single Day Ahead Coupling (SDAC).
On the 1st of October 2018, JAO became the Single Allocation Platform (SAP) for all European Transmission System Operators (TSOs) that operate in accordance to EU legislation, since it is able to implement and fulfill all regulatory obligations and requirements.
We provide accounting (clearing and settlement), contracting, reporting and project support services.

- 26k+Auctions held annually
- 500+Registered market participants
- 41Bidding zones
- 700 millionMWh of capacity traded annually

Our Employees
We believe the best results come from a well engaged and satisfied workforce. We nurture a high level of professionalism, foster a positive working environment in the company and encourage cross-department collaboration.
JAO recognizes efforts, celebrates success, creates opportunities, supports diversity and inclusion. Our employees are creative, highly motivated and willing to share their ideas.
Our team is our most valuable asset!
Our vision is to partner with Europe to empower and enhance a sustainable energy market.
Our mission is to deliver value-adding solutions to the European energy market to support the Transmission System Operators in delivering on their energy transition commitments. We are engaged in creating an environment that fosters excellence, innovation and collaboration with our customers, partners and interested parties, to achieve our shared goals.
Our Annual Report 2022 offers a comprehensive overview of JAO's performance, key achievements, financial results, and strategic initiatives during the past year.
We sincerely thank our dedicated team and shareholders for their continued support. Together, we remain committed to successfully addressing future challenges.
Our Annual Report 2021 provides detailed insights into JAO's performance, key achievements, financial results, and strategic initiatives during a year of significant challenges and resilience.
We sincerely thank our dedicated employees and shareholders for their unwavering support. Together, we look forward to embracing future opportunities.
-
Year
2024
-
Year
2023
-
Year
2022
-
Year
2021
-
Year
2020
-
Year
2019







Transmission System Operators (TSOs) from five countries: Belgium, France, Germany, Luxembourg and Netherlands, decided in June 2007 to establish a shared auction office.
With the formal incorporation in October 2008 in Luxembourg, Capacity Allocation Service Company for the Central West Europe (CASC-CWE) a common, regional cross border electricity market was established.
In the Central East European market area TSOs decided to establish a common auction office as well. The TSOs from Germany, Austria, Czech Republic, Slovenia, Hungary, Slovakia and Poland, settled Central Allocation Office (CAO GmbH) in Freising, Germany.
CAO's first auctions started in October.
TSOs of Switzerland, Austria, Slovenia, Italy and Greece joined CASC-CWE S.A. which becomes CASC.EU S.A. raising the number of shareholders to 14.
Merger of CAO GmbH and CASC.EU S.A. constitutes a new company.
JAO becomes the Single Allocation Platform (SAP) for all European Transmission System Operators that operate in accordance to EU legislation.
3 additional TSOs join JAO as shareholders.
JAO has 25 shareholders while servicing 30 TSOs.
-
Year
2007
-
Year
2008
-
Year
2009
-
Year
2010
-
Year
2015
-
Year
2018
-
Year
2019

JAO is created by people.
We entrust and empower our team
to face all challenges ahead!