The transformation of the European electricity system from centralized fossil-based generation to a decentralized renewable-based system poses challenges for the current market design with uniform national price zones. This design lacks spatially differentiated investment signals and market incentives for grid-supportive flexibility behavior. This study examines various market design options—such as bidding zone reconfigurations, capacity payments, and dynamic tariffs—and analyzes their combined effects on investment decisions, dispatch and ex-post congestion management. A multi-level electricity market model is applied to the German power system for the year 2030, incorporating market-driven investments and system operation. Results indicate that a uniform price zone leads to suboptimal investment signals and inefficient deployment of flexibility options. Capacity payments can ensure overall installed capacity levels but fail to provide regional incentives. In contrast, zonal pricing reflects structural congestion and aligns investment incentives with grid information, substantially improving flexibility deployment and reducing congestion. Overall, regional price differentiation emerges as the key driver of efficient investment and system operation, while capacity payments and dynamic tariffs only unfold additional value when combined with such locational signals.
Tag: market design
Electricity Markets in Transition and Crisis: Balancing Efficiency, Equity, and Security
Two electricity market crises following the lifting of post-Covid restrictions in 2021 and the natural gas supply interruptions in 2022, challenged the functioning of the EU electricity market and its design. This paper argues that the market design was already ripe for an overhaul as the efficient market paradigm has gradually become an instrument of…
Enhancing the Reliability of Bulk Power Systems against the Threat of Extreme Weather: Lessons from the 2021 Texas Electricity Crisis
The February 2021 cold weather outages in Texas remain a subject of important investigation, and lessons learned from the crisis have broader relevance for bulk power systems around the world. This article focuses on the policy responses to what we view as the root causes of the extended blackouts: the insufficient preparation of electric generating…
Irish and British electricity prices: what recent history implies for future prices
This paper compares retail and wholesale electricity prices in SEM, the market of the island of Ireland, and BETTA in Great Britain. Estimated wholesale costs are much lower in BETTA. We show that this is mostly because the wholesale price in BETTA is set too low to cover generation costs, although it is compensated by…