ENTSOG TYNDP 2017 - Annex C1 - Country Specifics

Final gas demand The TSO submitted the inputs for the different scenarios. The estimation of gas de- mand considers realistic growth of consumption in the range from 0.5 to 2%/year up to the year 2025 and remain stable or slowly decrease (depending on the sce- nario) after the year 2026 within the range 0.5%/year. Power generation – general methodology The prediction of natural gas demand for power generation was done starting with existing position of natural gas on the Slovenian electricity market and assuming one additional CHP power plant to be put into operation in the year 2019. In the current transition period the future development and role of natural gas on the Slovenian electricity market is difficult to predict, other possible power generation projects were not included yet – a more reliable estimation is expected to be available for next development plan.

SK (SLOVAKIA)

Final gas demand The TSO submitted the inputs for the different scenarios.

Future final demand data is predicted up to the end of 2025, therefore only this set of demand could be provided. The TSO has no information on non-network demand.

Power generation – general methodology The TSO submitted the inputs for the general methodology.

Data for gas demand for power generation is predicted up to the end of 2025. Until that moment, the TSO proposes to use own data. From 2026 onwards the thermal gap data is used.

UK (UNITED KINGDOM)

Final gas demand The TSO submitted the inputs for the different scenarios. No further comments have been reported.

Power generation – general methodology The TSO submitted the inputs for the general methodology.

For all scenarios the ENTSO-E data is the closest to TSO data for yearly average fig- ures. For Slow Progression and Blue Transition the data is quite close to this TSO data. For Green Evolution, all the other sources are significantly above TSO data. This would have been based on Future Energy Scenarios 2014 whereas FES 2015 is used for the TYNDP 2017 submission. While, for the purposes of consistency the TSO would be happy to use the ENTSO-E data, this would result in large inconsistencies with the peak data. For some years the annual is over twice the size of the 2 week peak figure. For this reason the only option is to use TSO data for Green Evolution. For the 2 week and the peak data using TSO data is appropriate due to the differ- ences in the method of calculating these elements.

Ten-Year Network Development Plan 2017 Annex C: Demand and Supply, C 1: Country Specifics | 17