[CWE Flow-Based Market Coupling] Integration of new tie-line between the Netherlands and Germany - Update

Dear Market Participants,

Amprion and TenneT TSO B.V. would like to inform you about the exact date of integration of the first circuit of the new 380kV interconnector Doetinchem - Niederrhein between the Netherlands and Germany into the CWE FlowBased Market Coupling. The first day of commercialization will be the 25th August 2018. The second (and last) circuit will be commercialized in November 2018, the exact date will be published in due time when it is determined.

Directly linked to the introduction of the new interconnector, following FlowBased inputs will change:

-New CBCOs linked to the new interconnector will be introduced, respecting CBCO selection criteria
-The Dutch external constraint value for both import and export direction will be adapted:

After commercial go-live of the first circuit, the external constraint for both import and export will be adapted as follows:

-On working days from 8.00 to 0.00h: from 5000MW to 5750MW
-For all other hours: from 4250MW to 5000MW.

After commercial go-live of the second circuit, the external constraint for both import and export will be adapted as follows:

-On working days from 8.00 to 0.00h: from 5750MW to 6500MW.
-For all other hours: from 5000MW to 5750MW.

Following the continuous effort for enhanced transparency at CWE, Amprion and TenneT TSO B.V. are performing a SPAIC analysis. SPAIC stands for Standard Procedure for Assessing the Impact of Changes and consists of a comparison of the CWE flow-based domains and market results for 12 typical “reference” days, commonly predefined by CWE TSOs, in order to estimate the impact of a change in grid topology or FlowBased parameters in the CWE Region.

We will provide the results of the SPAIC analysis for the reference period with both circuits in operation ASAP.