More charging points, more power, no expensive grid upgrades. With a battery storage system, you scale your charging infrastructure and keep grid draw within limits.
A single fast charger draws up to 500 kW from the grid. A megawatt charger for electric trucks even exceeds 1 MW. When multiple charging points are active simultaneously, the total power quickly exceeds the available grid connection.
The conventional solution: expand the grid connection. That is expensive, takes a long time, and in many cases is not even possible, for example in commercial areas with limited grid capacity. A battery storage system (BESS) solves this problem by buffering charging power locally.
Local Buffer
The battery storage charges during periods of low electricity demand and discharges during charging peaks. Grid draw remains consistently below the grid connection limit, even when the charging infrastructure demands more power.
A battery storage system is placed between the grid connection and the charging infrastructure. During periods of low charging demand, the storage charges up. When charging power exceeds the grid connection, the storage delivers the difference.
The result: more charging points and higher charging power without expanding the grid connection. At the same time, grid fees decrease because power peaks are capped (peak shaving). If a PV system is also integrated, self-consumption increases and charging costs drop further.
Megawatt Charging
Electric trucks require charging power of 1 MW and more. Without BESS, this is not feasible for most locations. A sufficiently dimensioned battery storage system makes megawatt charging possible even at sites with limited grid connections.
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No Grid Upgrade Needed
The battery storage buffers charging power locally. The existing grid connection is sufficient, even as the charging infrastructure grows. Expensive and time-consuming grid upgrade projects are eliminated.
500+ kW
Enable Fast Charging
A single fast charger draws up to 500 kW. Multiple simultaneously active charging points overload the grid connection. BESS delivers the peak power from the storage and keeps grid draw stable.
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Reduce Grid Fees
Charging events create high power peaks. These drive up grid fees. The battery storage caps the peaks (peak shaving) and lowers the demand-based grid costs.
Overnight Fleet Charging
Electric trucks, delivery vans, or buses are connected to the charging infrastructure in the evening. The battery storage charges during the day with low-cost electricity or PV surplus and releases the energy in a controlled manner at night. This keeps grid draw steady, and fleet vehicles are fully charged by morning.
Fast Charging Hub
At locations with multiple fast chargers (150-500 kW), simultaneous charging power quickly exceeds the grid connection. BESS caps the peaks and enables operation of more charging points than the grid connection alone could support.
Combination with PV System
A rooftop PV system generates electricity during the day. The battery storage stores the surplus and releases it to the charging infrastructure when needed. Self-consumption increases, grid draw decreases, and charging costs become predictable.
Mixed-Use Site
Commercial, logistics, and charging infrastructure share the grid connection. The battery storage optimizes the total site load: charging power is buffered, production peaks are smoothed, and the grid connection stays within its limit.
Find all use cases in detail on our use cases page.
Together we assess whether a BESS can meaningfully complement your charging infrastructure.
Mitglied von
That depends on the existing grid connection, charging behavior, and storage dimensioning. As a general rule: the battery storage buffers the difference between available grid power and charging demand. In many cases, the number of charging points can be doubled or tripled without expanding the grid connection.
Without battery storage, you need a corresponding grid connection capacity for each 150 kW fast charger. With multiple simultaneously active charging points, the demand quickly adds up to several hundred kilowatts. With BESS, you can dimension the grid connection significantly smaller because the storage covers the peaks.
Yes. The combination of PV, battery storage, and charging infrastructure is particularly economical. PV surplus is stored instead of fed into the grid and used for charging when needed. This lowers electricity costs and increases self-consumption. The EMS controls the energy flows automatically.
The costs depend on storage capacity, power rating, and the deployment scenario. NRG Solutions offers both a classic purchase (INVEST model) and a RENTAL model. In the initial consultation, we analyze your requirements and prepare an individual economic feasibility calculation.
The implementation timeline depends on the project scope. Container-based BESS solutions can be installed within a few months. NRG Solutions handles the entire project execution: from planning through permitting to commissioning and ongoing operation.
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