Grids & Benefits

A project by Bayernwerk Netz GmbH, BMW, EWE Netz GmbH, Lechwerke AG, MAINGAU Energie, Neon, Octopus Energy Germany GmbH, RWTH Aachen University, TenneT TSO GmbH, The Mobility House, TransnetBW GmbH, and UnternehmerTUM.

Project duration: March 2025 to January 2026

The Grids & Benefits co-innovation project demonstrated in a practical pilot that dynamic grid tariffs are an effective instrument for incentivising grid-friendly load shifting, relieving electricity grids, and at the same time reducing costs for end customers. The objective was to enable grid- and market-oriented charging behaviour for electric vehicles through time- and location-dependent price signals, thereby reducing congestion costs and long-term grid expansion needs.

Pilot results:

  • For home charging, aggregators shifted more than 70% of charging events and around 20% of the charged energy into grid-friendly time windows.

  • End customers achieved average savings of around 2 ct/kWh, with peak savings of up to 9 ct/kWh.

  • In public charging, a price reduction of 20 ct/kWh led to up to 30% of charging events being actively shifted into grid-friendly time windows.

  • Overall, a clear shift of loads away from peak-load periods towards times with high renewable generation or available grid capacity was observed.

Grids & Benefits shows that dynamic grid tariffs are technically feasible, effective, and relevant for customers. They can make an important contribution to the efficient use of electricity grids, the reduction of system costs, and the design of the ongoing grid tariff reform (AgNes).

Further details about the project are available in the slides (only in German).