System analysis energy storage
How can excess electricity be used across sectors and versatile? The En:Sys-analysis shows possible interactions, existing between the areas of electricity , heat and transport through the use of various energy storage technologies and power-to -X.
|Project status||Project completed|
|Project duration||November 2012 until December 2015|
The government´s energy concept provides an increase of the ratio of renewable energies in Germany. Hereafter the renewable energies shall cover 60 % of the gross final energy consumption and 80 % of the gross electricity demand up to the year 2050. The basic assumption for a high ratio of fluctuating renewable energies are the construction and the integration of high storage capacities in the energy supply system. For this an optimized operation of all system elements is needed, while load management, grid expansion and the operation of suitable storage technologies will be combinded at the right place.
The project aims at the integrated analysis of the contribution of storage technologies in Germany within a consistent model framework, in which all big fields of action (electricity, heat, transport - energy efficiency, renewable energies) are considered equally. This allows mapping of synergies, interactions and utilisation competition between the sectors electricity, heat and transport. Moreover additional development trends in the energy supply and the embedding in the European energy and emission zertificate marekt can be included, so that particularly interactions between strategies and energie savings and to the increase of energy efficiency with the necessary contribution of storage technologies and of the grid expansion by consideration of the potentials of load management can be considered.
System analytical evaluation
The ojective of the research project consists of the system analytical evaluation of energy storage technologies in Germany from the point of view of energy economics. To that it will be examined in a system analytical way by use of the models TIMES-PanEU and E2M2s, in which configuration energy storages and moveable loads support the integration of renewable energies in a future European energy supply system to the lowest costs. In this connection all big fields of action (electricity, heat, transport) are considered equally. With consideration of all sectors the determination of the optimal configuration of storage- and power-to-x-technologies allows the consideration of the interactions between energy supply and energy demand (e. g. interactions between electricity and heat supply by use of power-to-heat). The model coupling between the European energy system model TIMES-PanEU (integral optimization of all sectors over 40 years) and the European electricity market model E2M2s (high regional and temporal resolution) allows a holistic consideration of storage technologies and their interactions.
Energy economical perspective
Object of research is the system analytical evaluation of energy storage technologies in Germany form the point of view of energy economics. To that it will be examined in a system analytical way, in which configuration energy storages and moveable loads support the integration of renewable energies in a future European energy supply system to the lowest costs. The integrated consideration of the electricity, heat and transport sector allows the representation of cross-functional interactions, e. g. by use of power-to-x.
The project has been divided into the following 4 working packages:
The project network has arranged, that the participated institutes should be involved in the individually fields of development of the database for the system analyses. Here the IER is mainly responsible for the fields base scenario, thermal storages, hydrogen storages and large heat pumps. Furthermore there is made a support work in the fields grid expansion, pumped storages, compressed air storages and load management.
2. Model extensions:
In the forefront is the further development of the models TIMES-PanEU and ESPT (E2M2s) by a differentiated representation of storage technologies, mapping of moveable loads and grid expansion between and within the individually European countries. The European energy system model TIMES-PanEU is a linear optimization model, which optimizes the energy system of the countries of the EU-28, Norway and Switzerland with regard to total system costs integral. Here the sectors households, trade and servide, agriculture, transport and industry are mapped detailed. In the context of the project it was firstly required to increase the temporal resolution for the model region Germany because for consideration of storage technologies a continuously temporal resolution is necessary. The representaion of storage technologies is current status of the project. The European electricity market model E2M2s maps the German power plant park system- and blockspezific with regional allocation and summarises all other supply technologies also in the European abroad to representative power plant classes per region. In the context of the project the increasing of the temporal resolution by a constant regional resolution was also required. The model coupling between TIMES-PanEU and E2M2s allows a holistic consideration of energy storage technologies and their interactions. This will be showed in the furter project course.
3. Scenario calculations (up to 2015):
A further important element of the procedure in the system analysis is the formulation of scenarios, because the role of technologies and technology fields can only be classified in connection with energy policy objectives (e. g. climate protection goals) and external developments (e. g. development of primary energy prices). For this, and also for use in the thematic network, there will be developed several base scenarios, which describe a possible range of developments, without statements to their propabilities of occurance. With the scenario calculations it will be quantified the operation potential of storage technologies and load management in consideration of grid expansion depending on the supply ratio of fluctuating renewable energies within the different scenario worlds. Moreover there will be performed robustness checks, which show, how strong the optimal supply system depends on the availibility respectively non-availibility of one storage technology and other input parameters (e. g. feed of fluctuating renewable energies).
4. Communication (permanently):
The IER participates in the regulary meetings of the project network "Energy Storage", whereby both the own works and the works of the project partners are presented and discussed. The derived results of the research project will finally be made available to the grant provider. The results will also be published in national and international conferences and brought to a scientific discussion. Furthermore it is intended, to reach a big audience with articles in relevant and recognized scientific magazines of the energy industry and policy. This happens upon consultation with the grant provider. All project results will be written down in a final report.