Economic scalability of local energy and flexibility market under consideration of medium voltage nodes

This paper addresses the integration of local peer-to-peer energy markets with secure grid congestion management to accelerate decarbonization at the community level. To tackle the challenges of increasing renewable energy resources, energy loads from electric vehicles, and heat pumps, the PEAK platform with its dual-market approach—comprising a peer-to-peer energy market and a flexibility market—has been extended to incorporate multiple low-voltage and medium-voltage grids. Simulations involving 250 prosumers and 362 nodes evaluated financial benefits, market liquidity, and the role of wind power in enhancing local energy trading, especially during winter when photovoltaic generation is low. Results indicate that wind power integration increases prosumer earnings by €2.64 per day on average in winter, reducing dependence on external suppliers. Furthermore, low-voltage grid prosumers contribute to medium-voltage congestion management, emphasizing the platform’s scalability and flexibility for decentralized energy systems.