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(De-)zentrale Energiewende – Wirklichkeiten, Widersprüche und Visionen: Editorial

Systemintegration erneuerbarer Energien: die Rolle von Speichern für die Energiewende

Im Zuge der Energiewende werden die fluktuierenden erneuerbaren Energien in Deutschland stark ausgebaut. Dadurch ergeben sich neue Herausforderungen für das Elektrizitätssystem. In diesem Beitrag wird zunächst dargestellt, welche Arten von Speichern und anderen Flexibilitätsoptionen grundsätzlich zur Verfügung stehen, um diesen Herausforderungen zu begegnen. Mögliche Einsatzbereiche von Stromspeichern ...

Energiewende in Deutschland - Chancen und Herausforderungen: Editorial

Elektromobilität in Deutschland: Chancen, Barrieren und Auswirkungen auf das Elektrizitätssystem

Politik, Medien, Fahrzeugbauer und Energieunternehmen widmen der Elektromobilität derzeit große Aufmerksamkeit. Dieser Artikel beleuchtet technische Aspekte, Chancen und Barrieren elektrischer Fahrzeugantriebe und ordnet sie in einen Gesamtzusammenhang ein. Vorteile gegenüber klassischen Verbrennungsmotoren bestehen in geringen lokalen Emissionen, einer höheren Energieeffizienz, der Verbreiterung der ...

Wind Power Decreases the Need for Storage in an Interconnected 100% Renewable European Power Sector

The massive expansion of wind power and solar PV is the primary strategy to reduce greenhouse gas emissions in many countries. Due to their variable generation profiles, power sector flexibility needs to increase. Geographical balancing enabled by electricity grids and temporal flexibility enabled by electricity storage are important options for flexibility. As they interact with each other, we investigate ...

Flexible Electricity Use for Heating in Markets with Renewable Energy

Using electricity for heating can contribute to decarbonization and provide flexibility to integrate variable renewable energy. We analyze the case of electric storage heaters in German 2030 scenarios with an open-source electricity sector model. Making customary night-time storage heaters temporally more flexible offers only moderate benefits because renewable availability during daytime is limited ...

Power-to-Heat for Renewable Energy Integration: Technologies, Modeling Approaches, and Flexibility Potentials

Flexibly coupling power and heat sectors may contribute to both renewable energy integration and decarbonization. We present a literature review of modelbased analyses in this field, focusing on residential heating. We compare geographical and temporal research scopes and identify state-of-the-art analytical model formulations, particularly concerning heat pumps and thermal storage. While numerical ...

Prosumage of Solar Electricity: Pros, Cons, and the System Perspective

We examine the role of prosumage of solar electricity, i.e. PV self-generation combined with distributed storage, in the context of the low-carbon energy transformation. First, we devise a qualitative account of arguments in favor of and against prosumage. Second, we give an overview of prosumage in Germany. Prosumage will likely gain momentum as support payments expire for an increasing share of PV ...

Do Benefits from Dynamic Tariffing Rise? Welfare Effects of Real-Time Pricing under Carbon-Tax-Induced Variable Renewable Energy Supply

Common intuition holds that retail real-time pricing (RTP) of electricity demand should become more beneficial in markets with high variable renewable energy (VRE) supply mainly due to increased price volatility. Using German market data, we test this intuition by simulating long-run electricity market equilibria with carbon-tax-induced VRE investment and real-time price responsive and nonresponsive ...

On Start-up Costs of Thermal Power Plants in Markets with Increasing Shares of Fluctuating Renewables

The emerging literature on power markets with high shares of fluctuating renewables suggests that more frequent start-up procedures of thermal power plants may become an increasing concern, both for costs and possibly also for market design. Based on official scenario assumptions, we investigate how start-ups and related costs develop in Germany, where the share of fluctuating renewables quadruples ...