Energy, Climate Change & Environment

In electricity markets, market power is typically measured by the difference between observed offers and underlying marginal (variable) cost of power production. Therefore, marginal cost estimates should be as accurate as possible to ensure unbiased measurement of market power and welfare-improving mitigation thereof. However, cost components and power plant characteristics are private information and firms have an incentive to overstate costs. Instead, system operators thus proxy marginal cost of power plants from past offers of the respective plant, which leaves room for strategic manipulation by firms. This article tests the accuracy of this best-practice benchmark approach against multiple suggested alternative methods. The results of our empirical analysis reveal a low estimation accuracy of the currently applied benchmark approach. All suggested alternative approaches deliver more precise estimates.

Germany is a strong industrial nation with manufacturing contributing significantly to its economy. The country faces challenges including decarbonization, digitalization, and increased competition, especially in the automotive sector. Germany's automotive industry is vital to its economy, contributing around 9% of GDP and employing over 2.5 million people. The industry must adapt to these changes, requiring a skilled workforce with a focus on green technologies. The country has done a remarkable job in greening its manufacturing and green skills are quickly gaining prominence. After all, Germany is still a hotbed of innovation, but cannot afford to become complacent.

Sub-Saharan Africa ranks as one of the world’s poorest regions. The causes of this are exceptionally complex, with political instability, lack of security, low levels of education, poor access to infrastructure and lack of integration into global trade networks as the leading explanations, among others. In recent decades, economists and agricultural development experts have been looking for ways to increase agricultural productivity in Sub-Saharan Africa through improved seeds, fertilisers and more modern farming technologies. This article looks at the measures in question, what has been done so far, and how scientists assess the effectiveness of these measures on agricultural productivity and poverty reduction. Finally, we present concrete recommendations.

The EU faces the challenge to combine large and sustained investments to promote the transition towards a green, digital, and competitive Europe while maintaining fiscal sustainability. Based on a comprehensive literature review on the effects of fiscal rules and investment clauses on public finances, this in-depth analysis provides some guidance how higher public investments can be achieved by a targeted golden rule without harming fiscal sustainability in the EU fiscal framework. The study also discusses the role of investments in the current proposals of the European Commission on the reform of the EU Economic Governance.