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Institutsleitung wird erweitert: Bialek-Gregory verstärkt das EWI

Sylwia Bialek-Gregory wird zum 15. September 2025 wissenschaftliche Geschäftsführerin des EWI und verstärkt damit die Institutsleitung. Die promovierte Ökonomin wechselt aus dem Stab des Sachverständigenrats Wirtschaft von Berlin nach Köln.

Optimized Renewable Grid Connections: Overplanting Cuts Costs

Netzausbaukosten könnten zukünftig stark ansteigen, nicht zuletzt durch den Anschluss erneuerbarer Energien. Wie sich durch Überbauung der Netzanschlüsse Netzausbaukosten einsparen und Effizienzgewinne heben lassen, zeigt eine Kurzstudie des EWI.

Voltage measurement can improve the quality of supply

The current electricity grid regulation hardly incentivises grid operators to systematically measure and maintain voltage quality. A short study by EWI and Fraunhofer-IEG shows options for regulating voltage quality.

Reserves returning to the market: Price dampening comes with side effects

The coalition agreement foresees the reintegration of reserve power plants to the electricity market. However, a new Policy Brief by the EWI shows: The price effect depends on the specific design, while grid charges may increase and investment incentives could decline.

Compliance with emissions budget by 2030 uncertain, but confirmed – significant target breach expected from 2030 at the latest

Today, the Council of Experts on Climate Change published its review report of the German greenhouse gas emissions for the Year 2024 and the projection data of 2025. EWI Director Marc Oliver Bettzüge is part of the five-member panel.

Energy policy in the coalition agreement: EWI sees critical points

The EWI has analysed four energy policy proposals from the coalition agreement between the CDU, CSU and SPD: the reduction in electricity prices, the financing of renewable power plants, the expansion of the core grid and the Building Energy Act.

EU ETS2 Could Increase Energy Prices for Households

The European Emissions Trading System (ETS2), planned to start in 2027, could drive up CO₂ prices in the building and transport sectors. This would have distributional effects and increase the pressure on households to invest in climate-neutral technologies.

EWI paper: Regulation of gas networks with falling demand

In the course of decarbonisation, a decline in demand for natural gas is expected in many European countries. A new working paper by researchers at the EMI shows that degressive depreciation of gas grids to be decommissioned is theoretically welfare-optimal.

Heating Technologies: GHG Emissions and Costs under the Microscope

EWI compared heating technologies in terms of emissions, infrastructure, and heating costs. The analysis considered both renovated and unrenovated building types, as well as the trade-off between costs and emissions.