Natural Gas Transmission System Operator

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Consultation document on Common principles for market information publication 
In order to align the publication principles used in the Baltic-Finnish market area the Transmission system operators (TSOs) of the market area have developed a descriptive document to clarify, align and communicate the current principles used prior and when disclosing the infrastructure and service based transparency and inside information to the market participants. This document is intended as a set of guidelines to the market participants to elaborate the principles, timelines and methodologies used, as well as to explain the information already disclosed. 
The aim of the Document is to consult information transparency principles which will be taken into account by TSOs as a best practice guideline.
The document sets out the principles for:

1. Publication of the market transparency and inside information

  • Defines the common publication locations and information available on each publication system (including Annex 1). 

2. Capacity calculation methodology coordination

  • Defines the main capacity calculation principles
  • Defines the main schedule for the calculation procedure
3. Capacity calculation and coordination timeframes
  • Defines the timeframes and coordination times of the capacity information, as well as the publication time of the coordinated capacity
4. Common view on the publication principles used in the REMIT ((EC) No 1227/2011) and Transparency reporting ((EC) No 715/2009) 
  • Defines any other data or procedure used and data published, mainly:

a) Definitions used in the publications

b) Publication of implicit capacity shares.

c) Virtual capacity on the interconnection points

d) Coordination of joint maintenance plans

  • The use of UMM and inside information disclosure
The outcome of this public consultation is used to determine the best practices between all TSOs in common Finnish-Baltic market area and use the feedback in the review process of the relevant market rules and TSO-TSO contracts. Public consultation is open at all Baltic-Finnish market area TSOs until 06.09.2021 on links provided below. Feedback can be provided to any of the contacts listed below under specific TSO.
Conexus Baltic Grid:
GasGrid Finland:


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