Electrical energy storage in highly renewable European energy systems: Capacity requirements, spatial distribution, and storage dispatch
| Autor: | Felix Cebulla, Markus Pohl, Tobias Naegler |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Flexibility (engineering)
Renewable energy Systemanalyse und Technikbewertung Renewable Energy Sustainability and the Environment business.industry Computer science 020209 energy Energy Engineering and Power Technology 02 engineering and technology Linear optimization Environmental economics Investment (macroeconomics) Grid Transport engineering Storage requirements Electricity generation Variable renewable energy Work (electrical) 0202 electrical engineering electronic engineering information engineering Electrical and Electronic Engineering business Electrical energy storage Energy systems modeling Energy (signal processing) |
| Zdroj: | Journal of Energy Storage. 14:211-223 |
| ISSN: | 2352-152X |
| Popis: | One of the major challenges of renewable energy systems is the inherently limited dispatchability of power generators that rely on variable renewable energy (VRE) sources. To overcome this insufficient system flexibility, electrical energy storage (EES) is a promising option. The first contribution of our work is to address the role of EES in highly renewable energy systems in Europe. For this purpose, we apply the energy system model REMix which endogenously determines both capacity expansion and dispatch of all electricity generation as well as storage technologies. We derive an EES capacity of 206 GW and 30 TWh for a system with a renewable share of 89%, relative to the annual gross power generation. An extensive sensitivity analysis shows that EES requirements range from 126 GW and 16 TWh (endogenous grid expansion) to 272 GW and 54 TWh (low EES investment costs). As our second contribution, we show how the spatial distribution of EES capacity depends on the residual load, which—in turn—is influenced by regionally predominant VRE technologies and their temporal characteristics in terms of power generation. In this sense, frequent periods of high VRE excess require short-term EES, which naturally feature low power-related investment costs. In contrast, long-term EES with low energy-related costs are characteristic for regions where high amounts of surplus energy occur. This relationship furthermore underlines how EES capacity distribution is implicitly influenced by technical potentials for VRE expansion. |
| Databáze: | OpenAIRE |
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