European Union Electricity Market Glossary
ARIS (ACER REMIT Information System) is the IT system of the European Agency for the Cooperation of Energy Regulators (ACER) for collecting and sharing data (including fundamental data) with national European energy regulators and other authorities, and monitoring trading activities in wholesale energy products with the aim to detect and deter market abuse in forms of insider trading and market manipulation, including attempted market manipulation.
Reporting format, channels and times are set by the Commission Implementing Regulation No 1348/2014 of 17 December 2014 on data reporting implementing Article 8(2) and Article 8(6) of Regulation (EU) No 1227/2011 of the European Parliament and of the Council on wholesale energy market integrity and transparency (OJ L 363, 18.12.2014, p. 121 - 'REMIT Implementing Regulation') according to Article 8(2) and (5) of REMIT.
ACER's Annual Report on its activities under REMIT in 2014 contains the brief description of the ARIS components and development:
The first tier of ARIS, Tier 1, is the data collection and reporting system for trade and fundamental data. The scope and details for the data to be reported under Tier 1 is defined by the European Commission in the REMIT Implementing Regulation. CEREMP became an integral part of ARIS Tier 1 in 2014.
Tier 2 of ARIS is the main data warehouse, where all the reported trade and fundamental data, as well as the registration data from market participants, will be stored.
Tier 3 of ARIS is the market surveillance system, which will automatically screen and analyse the data collected and processed in Tier 1 and 2, in order to identify anomalies that might constitute cases of market abuse (i.e. suspicious events). The system will notify the ACER's surveillance experts in the Market Monitoring Department by alerting them of such cases. The market surveillance system will also be used for supporting the investigations conducted by the EU Member States National Regulatory Authorities (NRAs) in coordination with the ACER.
Tier 4 of ARIS is the data sharing system. According to Article 10 of REMIT, the Agency shall establish mechanisms to share the information stored in ARIS with NRAs, financial regulatory authorities, national competition authorities, the European Securities and Markets Authority (ESMA) and other relevant authorities. This tier may also be used for additional data analysis, reporting and archiving, and for the publication of certain aggregated information according to Article 12(2) of REMIT.
In early 2015, the ACER deployed its first public access page to the ARIS system i.e. the REMIT Portal.
Through the Portal, a number of applications were available immediately after the deployment. The Portal is now the main access point for the ARIS system.