Grid congestion in logistics: how do you charge a large fleet the smart way?

You’ve signed the order. Dozens of electric trucks or vans are on the way. The CO₂ targets line up, the total cost of ownership looks good, and the zero-emission zones are in the diary. Then the grid operator gets in touch: a heavier connection for your depot? You’re on the waiting list. For years.

This is fast becoming the reality for logistics operators across Europe. Grid congestion is no longer a future problem; it is an immediate brake on electrification. The question is not whether you can run an electric fleet without a grid upgrade, but how. The answer lies in smart charging, dynamic load management and, in time, bidirectional charging.

Grid congestion forces logistics companies to charge their electric fleet on a connection that was never designed for it. Waiting for a grid upgrade takes years. The fix is in the control layer.

• Smart charging based on route schedules already cuts your peak demand by tens of percent, without a single vehicle leaving late.
• Dynamic load management (peak shaving) adjusts charging power per vehicle in real time, based on the depot’s actual load.
• An on-site battery absorbs the evening peak when every truck arrives at once, so you never exceed your contracted capacity.
• Bidirectional charging (V2G) turns parked vehicles into mobile batteries that supply peak power and generate revenue on dynamic energy markets.
• One central EMS orchestrates chargers, battery, solar panels and market prices as a single system. Without that brain, they are expensive standalone components getting in each other’s way.

A depot with 50 electric trucks on the same connection, substantially lower energy costs and no grid upgrade. That is the difference between charging everything at once and charging smart.

Why grid congestion is slowing down logistics electrification

The logistics sector is electrifying faster than the grid can keep up. A typical van already needs 50 to 100 kWh per night. An electric tractor unit with trailer demands 300–600 kWh, per vehicle, per day. Multiply that by a fleet of dozens or hundreds and your peak demand goes through the roof.

At the same time, large parts of the grid are at capacity. No additional transport capacity is available, or you face years of waiting for reinforcement. And even if you do get through the queue, higher capacity tariffs and rising peak-demand charges make a brute-force “charge everything at once” strategy financially unsustainable.

Three problems converge

Connection capacity is limited. Charging the entire fleet simultaneously exceeds your contracted value. Penalties and even disconnection are on the table.

• Downtime costs money. A truck that needs to leave at 06:00 but is not fully charged costs you revenue and customer trust directly.

• Electricity is no longer a flat 24/7 cost. Charge at the wrong hour overnight and you pay top rate. Plan it well and you charge at the cheapest, greenest moments.

What smart charging actually means for a large fleet

Smart charging is more than “a charge point with an app”. It is an integrated process that aligns your charging infrastructure, your operations and your energy costs. For a logistics fleet, it consists of three layers.

1. Matching charge profiles to the operation

Not every truck or van needs the same charge at the same time. A vehicle departing at 04:00 takes priority over one that does not leave until 14:00.

By linking the route schedule to the charging plan, the system knows exactly when each vehicle needs to be ready, and can spread the rest.

That way you use the entire night instead of just the first two hours after arrival. That single change already cuts your peak demand by tens of percent.

2. Preventing peaks with dynamic load management (peak shaving)

The next layer is dynamic control. An EV load management system monitors the connection’s actual load in real time and adjusts charging power per vehicle accordingly. Does depot consumption rise because of refrigeration or an order picker? Charging power drops temporarily. Does it fall again? Charging ramps back up.

Combine that with an on-site battery and you flatten peaks even further. The battery absorbs the highest portion of demand, so you never exceed your contracted capacity. This principle is called peak shaving, and for logistics depots it is often the difference between “it doesn’t fit” and “it fits just fine”.

3. Bidirectional charging: from cost to buffer

The third and most interesting layer is bidirectional charging, also known as V2G (vehicle-to-grid) or V2B (vehicle-to-building). A bidirectional charger can push power not only to the vehicle, but also back into the system.
For a logistics fleet, that means your vehicles become mobile batteries. When the electricity price peaks, or your depot hits its connection limit, parked vehicles temporarily discharge some capacity back. Once the price drops or demand eases, they charge again.

That opens two revenue models at once:

You avoid expensive peak power by running “from your own battery” at the right moment. You earn money on dynamic energy markets by feeding surplus back at the right time.

One important caveat: bidirectional charging requires suitable vehicles, suitable chargers and a central control layer that orchestrates everything safely.

The role of an EMS: the brain above your charging infrastructure

This is where it all comes together. Smart charging, peak shaving and bidirectional charging only work when one system controls everything: the chargers, the on-site battery, the rooftop solar panels, building consumption and market prices.

That is exactly what an Energy Management System (EMS) does. A good EMS guards the connection limit and prevents breaches. Optimises per vehicle based on departure time and charge requirement. Trades flexibility on dynamic markets (EPEX) for additional revenue. Integrates with your existing charging infrastructure, BMS and, where applicable, TMS.

Without that brain, all those assets, chargers, batteries and panels, remain expensive standalone components working against each other. With it, they become one system that protects your depot and generates revenue.

Example scenario: 50 electric trucks at one depot

Take a logistics depot with 50 electric tractor units, a 1,250 kVA connection and rooftop solar panels. Trucks arrive between 17:00 and 22:00 and leave again between 04:00 and 08:00.

Without smart charging, all 50 trucks would try to charge at full power between 17:00 and 19:00. Result: way over the contracted capacity, a penalty, or simply no way to make it work at this site.

With an EMS that combines route schedules, market prices and connection limits: trucks charge in staggered fashion between 17:00 and 04:00, drawing heaviest during the cheapest hours (typically 02:00–05:00), with a battery absorbing the evening peak. Solar panels feed daytime refrigeration and the first early charge sessions directly. Bidirectional trucks parked during the afternoon feed back briefly between 17:00 and 19:00 to shave the peak.

Result: same connection, entire fleet ready to go, substantially lower energy costs and no grid upgrade needed.

Common mistakes when electrifying a logistics fleet

Tibo EMS: certainty when electrifying your fleet

Tibo EMS is built for exactly this type of challenge. Our platform controls chargers, batteries, solar panels and flexible installations as one system, respecting the connection limit and keeping your operations on track.

Under the bonnet, Alice, our algorithm, calculates a new 48-hour schedule every five minutes. Based on departure times, weather forecasts, energy prices and connection limits, Alice continuously selects the smartest action per asset. At energy-intensive sites, that delivers up to 60% lower energy costs and up to 50% lower CO₂ emissions.

The system is hardware-agnostic and works with the charging infrastructure you already have or plan to install, including bidirectional chargers when you add them. And before you invest, we run a simulation based on your own route profiles to show you what smart charging actually delivers: how much peak demand you avoid, how much you save and how many vehicles your current connection can handle.

Ready to get your fleet on the road without waiting for a grid upgrade?

Request a free simulation. We will run the numbers based on your depot, your fleet and your operations to show what smart charging, and in time bidirectional charging, actually delivers.