Fortunately, a robust distributed grid is not only valuable for depots but also critical to the wider energy system. Large grid connections enable battery storage systems to inject or withdraw electricity to help balance fluctuations from intermittent renewable generation and unexpected demand spikes, increasingly common in an electrifying transport system.
Importantly, grid balancing services are compensated by grid operators. This means that grid connections, when paired with battery energy storage systems (BESS), can open up new revenue streams for depot owners. These revenue opportunities, in turn, can attract private sector capital to finance the infrastructure needed to scale electric fleets.
Combining grid connections with BESS thus achieves a dual purpose—enabling the transition of electric transport and the capacity to absorb renewable energy generation.
But this is just the beginning. EVs themselves contain large batteries, which together with smart software can also provide grid services. Over time, these mobile assets will become key building blocks in the future energy system.
The distributed nature of depots and vehicles means tomorrow’s grid will rely less on centralised infrastructure like nuclear plants or hydro storage, and more on a flexible, decentralised network of energy producers and consumers. In an age when large-scale infrastructure is increasingly vulnerable to disruption or sabotage, including undersea fibre-optic cables and power stations, decentralisation offers a strategic advantage.
Depots integrated into the wider power system thus hold the potential to do more than just decarbonise transport—they can contribute to a more resilient, decentralised Europe.
The Smart Divide: Software Separates Winners from Losers
A decentralised power system is inherently more complex as it depends on many distributed components operating in sync. A successful transition will depend on smart software that can coordinate energy flows across thousands of sites and assets in real time.
An important tenet in the future power system not to be overlooked is the transport operation within the depot itself. By aligning route planning and charging schedules with patterns of electricity production and consumption, both the transport operator and the wider energy system stand to benefit—from reduced operating costs, deferred grid investment and improved grid stability.