Energy storage

Freber delivers flexible and future-oriented energy solutions for charging and energy storage, whether the need is mobile, temporary, or permanent. Our tailor-made systems combine high performance, safety, and sustainability, ensuring that power is available where it is needed, when it is needed.

Unibuss energy storage 4Mvh container solution

Mobile solutions

Freber's mobile hanger solutions give you flexibility in terms of charging location and availability, whether there are seasonal variations in location or time-limited needs on a construction site. The hangers are customized in capacity and design based on your wishes and needs.

ESS CHARGING TRAILERS come with built-in batteries for easy power supply to electric cars and machines, for example on construction sites. With a mobile charging trailer, cars and machines can be charged WHERE THEY ARE. Size, capacity, and connections are customized to your needs, within a maximum weight of 3500 kg. Choose from 38 to 191kWt battery energy and up to 150kW 3-phase mains voltage output. The solution comes with a cloud-based service, notification services via SMS and email, and also has climate control and extinguishing systems.

Off-grid energy storage for emergency power, rescue charger

ESS CHARGING TRAILERS come with built-in batteries for easy power supply to electric cars and machines, for example on construction sites. With a mobile charging trailer, cars and machines can be charged WHERE THEY ARE. Size, capacity, and connections are customized to your needs, within a maximum weight of 3500 kg. Choose from 38 to 191kWt battery power and up to 150kW 3-phase mains voltage output. The solution comes with a cloud-based service, notification services via SMS and email, and also has climate control and fire extinguishing systems.

EV CHARGING TRAILERS are built for mobility, flexibility, and quality. Choose the desired number and type of charging boxes. Type 2 or type 3 AC chargers, with or without battery support. With a mobile EV trailer from Freber, you can increase charging capacity in seasonal areas or in connection with larger events. EV trailers can be supported with peak shave batteries, tracking devices, and 4G modems with their own UPS, depending on your needs.

RESCUE CHARGER is a mobile solution with batteries for emergency charging of EVs.

It can deliver 50kW of charging power and is used for vehicles equipped with CCS2. After completing a service call, the unit can be fully recharged in less than 1.5 hours by connecting the system to a standard CCS2 DC fast charger or via a standard industrial plug, and will then be ready for reuse.

Stationary solutions

Freber supplies complete modular energy storage systems (ESS) from 15kWt and upwards, in either indoor racks, outdoor cabinets, mobile trailers or containers.

All systems are delivered complete with inverters, battery management system (BMS), and climate control. In addition, containers can be delivered with fire extinguishing systems, tracking, burglar alarms, G-sensors, remote monitoring, cameras, etc. We offer containers in steel and composite, among other materials. All our systems are prepared for the Nordic flexibility market.

Container energy storage Stubberud Unibuss 1.1 MW capacity

Frequently Asked Questions

What is an ESS charging trailer and when should it be used?

An ESS charging trailer is a mobile energy storage solution with built-in batteries that supply power where there is insufficient grid capacity or where the need is temporary.

It is particularly well suited for:

  • Construction and building sites
  • Temporary projects
  • Seasonal locations
  • Arrangements and events
  • Areas with limited network access

With a mobile solution, cars and electric machines can be charged where they are, without costly and time-consuming grid expansion.

What capacity can be delivered and can the solution be customized?

Yes – all our mobile solutions are customized to the customer's needs.

ESS charging trailer comes with:

  • Battery capacity from 38 to 191 kWt
  • Up to 150 kW 3-phase mains voltage output
  • Maximum total weight of 3500 kg

We customize capacity, power, connections, and physical design based on application and energy requirements. For EV trailers, you can choose the desired number and type of charging boxes (AC Type 2 or Type 3), with or without battery support.

The goal is to deliver a solution that fits your project, not a standard model that has to be customized afterwards.

How is the system monitored and secured?

All our mobile solutions come with:

  • Cloud-based service
  • Notification via SMS and email
  • Remote monitoring
  • Climate control
  • Integrated extinguishing system

EV trailers can also be supplied with a tracking device, 4G modem with its own UPS, and other security features as required. This ensures high operational reliability and full control, even at unmanned locations.

What does a stationary energy storage system from Freber deliver?

Freber supplies complete, modular energy storage systems (ESS) from 15 kWt and upwards, tailored to the customer's needs and area of application.

The systems are supplied complete with:

  • Inverters
  • Battery Management System (BMS)
  • Climate control

Depending on the installation and requirements, the solutions can also be supplied with:

  • Integrated extinguishing system
  • Tracking and theft alarm
  • G-sensor
  • Remote monitoring
  • Camera

We offer robust solutions in both steel and composite, developed for demanding Nordic conditions.

What can a stationary energy storage system be used for?

A stationary energy storage system can be used to:

  • Reducing power peaks (peak shaving)
  • Relieve the power grid
  • Ensure stable power supply
  • Integrating renewable energy
  • Optimize energy costs

All our systems are prepared for the Nordic flexibility market. This means that energy storage not only functions as a reserve or backup, but can also become an active part of your company's energy strategy.

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