Please use this identifier to cite or link to this item: http://hdl.handle.net/10419/103366
Authors: 
Egerer, Jonas
Schill, Wolf-Peter
Year of Publication: 
2014
Series/Report no.: 
DIW Discussion Papers 1402
Abstract: 
We analyze distinctive investment scenarios for the integration of fluctuating renewables in the German power system. Using a combined model for dispatch, transmission, and investment, three different investment options are considered, including gas-fired power plants, pumped hydro storage, and transmission lines. We find that geographically optimized power plant investments dominate in the reference scenarios for 2024 and 2034. In scenarios with decreasedrenewable curtailment, storage and transmission requirements significantly increase. In an alternative scenario with larger investments into storage, system costs are only slightly higher compared to the reference; thus, considering potential system values of flexible pumped hydro storage facilities that are not included in the optimization, a moderate expansion of storage capacities appears to be a no-regret strategy from a system perspective. Additional transmission and storage investments may not only foster renewable integration, but also increase the utilization of emission-intensive plants. A comparison of results for 2024 and 2034 indicates that this is only a temporary effect. In the long run, infrastructure investments gain importance in the context of an ongoing energy transition from coal to renewables. Because of long lead times, planning and administrative procedures for large-scale projects should start early.
Subjects: 
German energy transformation
integrated planning
renewable integration
transmission
storage
JEL: 
C61
H54
L94
Document Type: 
Working Paper

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