ENERDAY 2026 - 20th International Conference on Energy Economics and Technology

Session

Market Design & Bidding Zones

Mar 27, 2026, 2:30 PM

HSZ/3-04 - HSZ/04 (HSZ)

84. Local Market Power Through Bidding Zone Split: An Equilibrium Analysis for the German Electricity Marke

Hendrik Diers (Energiewirtschaftliches Institut an der Universität zu Köln (EWI))

3/27/26, 2:30 PM

Germany currently operates as a single Bidding Zone (BZ), maintaining a uniform market price regardless of regional disparities in production and consumption. This configuration faces increasing challenges: structural imbalances between wind generation in the North and load centers in the South lead to severe grid bottlenecks. Managing this internal congestion required redispatch (RD) measures...

103. The German balancing energy market reform: Analyzing effects on prices, liquidity and competition

Michaele Diehl

3/27/26, 2:50 PM

The increasing share of renewable energy sources increases uncertainty in the power supply until shortly before the time of delivery. In addition to increased trading activity on the continuous intraday market, ancillary services have also gained importance as a critical tool for maintaining grid stability (Hirth et al., 2015). Complementary to the increasing RES share, new technologies such...

109. Investments and Market Outcomes under Regulatory Uncertainty: A Case Study of German Electricity Bidding Zones

Johannes Spies (UTN)

3/27/26, 3:10 PM

Motivation
The German bidding zone prevents that structural north-south bottlenecks in the transmission system become visible on the electricity market, i.e., there is no regional price discrimination. In the short-term, this results in inefficient market results at national and European level, which translates in technical infeasible market results due to network constraints, high levels...