Guidelines for Good TPA Practice for Storage System Operators (GGPSSO)

The Guidelines for Good TPA Practice for Storage System Operators (GGPSSO) give a minimum set of rules required for the organisation of the European market for storage capacity. They are addressed to all Storage System Operators (SSOs) falling under the scope of the European Directive 2003/55/EC (the Gas Directive) as well as to the users of these systems. The GGPSSO should be forward-looking, and flexible enough to account for developments in market arrangements.

The purpose of the GGPSSO is to ensure that SSOs provide the services needed by storage users on a fair and non-discriminatory basis. Systems and processes should facilitate the sustainable development of competition in gas supply, and these tasks are pursued taking into account technical constraints and the efficient use of the storage infrastructure.

An overriding principle is that storage systems and processes implemented by the SSOs maintain secure, reliable and efficient operation of the storage system (Article 8(1.a) of the Gas Directive).

CSL actively strives to be fully compliant at all times with all aspects of the GGPSSO.

Information about real time gas flows from the Rough storage facility can be found at:

www.nationalgrid.com/uk/Gas/Data/EFD.

Information about the latest stock level in Rough (See Long Range Storage monitor) can be found at:

http://www.nationalgrid.com/uk/Gas/Data/storage.

For more information on the GGPSSO, please visit the European Regulators Group for Electricity and Gas website.

Or from Gas Storage Europe (GSE) which CSL is an active member of at www.gie.eu.com.