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Swiss Energy System Model (STEM)

Report about the model and results for Swiss Energy Transition Scenarios

Energy models are useful to generate insights into future energy system options and their associated uncertainties. A comprehensive and flexible model of the Swiss energy system-the Swiss TIMES energy system model (STEM)-has been developed for the analysis of plausible energy pathways.

Report "Switzerland Energy Transition Scenarios": Swiss Energy System Model (STEM)

The results illustrate that even without additional policy intervention specifically targeting climate change or energy security, a number of other driving forces (energy prices, economic structural change, and improvements in technology performance/cost) are likely to reduce final energy demands during 2010–2050, through increasing efficiency and electrification of end uses. These developments also go some way towards climate change mitigation goals, reducing CO2 emissions by around 30%.

On the supply side, the phase out of nuclear generation and continuous growth in electricity demands due to electrification of end-uses creates a need for additional capacity in both the short and long term. The large-scale exploitation of renewable resources is a key requirement to avoid increasing dependence on net imports.

To determining the lowest-cost energy pathways to realise future policy goals, the STEM framework provides insights into the economic implications of realising these goals.

Policy support will be critical in realising many of the developments required in a transition to an energy system that addresses environmental, security, social and economic goals, despite uncertainty regarding the exact nature of future domestic climate change and energy security policies, and international developments.

Source: Switzerland Energy Transition Scenarios – Development and Application of the Swiss TIMES Energy System Model (STEM); PSI Bericht Nr. 14-06 December 2014 ISSN 1019-0643 Authors: Ramachandran Kannan, Hal Turton

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