Distributed energy resources in the electricity supply market: participation pathways, applications, challenges, and key recommendations—a European perspective

Abstract

Decarbonization, electrification, and digitalization are reshaping European electricity systems by increasing the role of distributed energy resources in flexibility provision, local resilience, and market participation. However, the value of distributed resources is not defined by technology characteristics alone. It depends on the alignment between physical flexibility, distribution-network constraints, market-product requirements, measurement and verification rules, aggregation arrangements, and the institutional roles of transmission and distribution system operators. This article reviews participation pathways for renewable-based distributed-resource portfolios in electricity supply markets, with emphasis on photovoltaic and small-wind generation, stationary storage, flexible demand, heat pumps, and electric-vehicle smart charging or vehicle-to-grid operation. The analysis also considers microgrids, aggregation schemes, local energy markets, and energy communities as coordination environments through which heterogeneous resources can be pooled, controlled, and exposed to market or procurement mechanisms. A Distributed-energy-resources-Service-Market-Governance (DSMG) is developed to link resource attributes, including controllability, response time, duration, measurability, and locational relevance, with service families, market/procurement layers, and governance actors. The framework is supported by taxonomies, capability-to-market mapping matrices, and a participation-feasibility index that evaluates the compatibility of resource portfolios with wholesale, retail/community, local-flexibility, and balancing/ancillary-service pathways. The synthesis shows that scalable distributed-resource participation depends on observability, telemetry, baseline construction, aggregation, distribution-network hosting capacity, protection compatibility, and coherent coordination between transmission- and distribution-level operation. The resulting roadmap identifies regulatory, technical, and digital priorities for integrating distributed flexibility into European electricity markets.