Underground Storage Facilities Transparency Template


In addition to publishing the information required by European regulations, the members of the Council of European Energy Regulators (CEER) and Gas Storage Europe (GSE) organisations have agreed to implement on a voluntary basis, the “Transparency Template”, a joint tool to facilitate access to information for users of the infrastructure.

This initiative aims to:

  • Facilitate access to information through hyperlinks.
  • Respecting the diversity of business models and regulatory conditions
  • Ensure that the information on the websites of the underground storage operators is easily accessible to the market.


Macro AreaSubmenuLinks

Corporate Communication and Public Affairs Office

Commercial logistics customer service

GTS Service Desk

Services and facilitiesTechnical characteristics

Capacity development management

Underground Storages of Enagás Transporte

Products and servicesOffered Services
How to become a customer/userHow to book capacity

Authorisation and Access


Contract InformationBusiness framework agreements
Operator InformationOur underground storage facilities
CapacitiesPrimary market


Calendars details

Contracting status

Result of capacity allocation processes

Secondary market

Secondary capacity market rules

SL-ATR Portal 

Tariffs and pricingPricing/Tariff informationTariffs 
Fee/Tariff simulator
Legal documentationStorage codesUnderground storage balancing rules
Regulation and legislation

Technical Management of the Gas System Regulations and detailed protocols

National regulation

European regulation

Operational informationMaintenance

Infrastructure maintence plan of Enagás

Operation and maintence of the Spanish System

Operational dataUnderground storage facility monitoring