Article 13 Tariffs for access to networks

Tariffs, or the methodologies used to calculate them, applied by the transmission system operators and approved by F1the national regulatory authorityF2..., shall be transparent, take into account the need for system integrity and its improvement and reflect the actual costs incurred, insofar as such costs correspond to those of an efficient and structurally comparable network operator and are transparent, whilst including an appropriate return on investments, and, where appropriate, taking account of the benchmarking of tariffs by the national regulatory authority. Tariffs, or the methodologies used to calculate them, shall be applied in a non-discriminatory manner.

F3Tariffs may also be determined through market-based arrangements, such as auctions, provided that such arrangements and the revenues arising therefrom are approved by the F4national regulatory authority.

Tariffs, or the methodologies used to calculate them, shall facilitate efficient gas trade and competition, while at the same time avoiding cross-subsidies between network users and providing incentives for investment and maintaining or creating interoperability for transmission networks.

Tariffs for network users shall be non-discriminatory and set separately for every entry point into or exit point out of the transmission system. Cost-allocation mechanisms and rate setting methodology regarding entry points and exit points shall be approved by the national regulatory F5authority. F6The national regulatory authority must ensure that network charges are not calculated on the basis of contract paths.

Tariffs for network access shall neither restrict market liquidity nor distort trade across borders of different transmission systems. F7...