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Aerial view of harbor and fishing village in Senja, Norway.

Battery energy storage for grid stability in Arctic communities

How Smart Senja uses battery energy storage to strengthen grid stability
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Last updated: 21.08.2026

Smart Senja at a glance

Smart Senja uses battery energy storage to strengthen grid stability and support growing power demand in remote communities on Senja in Northern Norway. Together with grid operator Arva and Rolls-Royce Power Systems, BOS Power delivered an mtu EnergyPack solution that acts as a local energy buffer, helping reduce grid constraints while supporting a more reliable and flexible energy supply.

 

  • Location: Senja, Norway

  • Solution: Battery Energy Storage System

  • Customer: Arva AS

  • Application: Grid support and energy buffering

Table of Contents

Growing power demand in remote communities on Senja

Situated in Norway’s Arctic, Senja Island is home to two main communities of around three hundred residents, primarily relying on the fishing industry for livelihood.

Growth in the fishing industry and increasing household electricity demand placed additional pressure on the local power grid. With limited capacity available in the existing grid, a solution was needed to support growing demand without relying solely on conventional grid expansion.

Scenic coastline of Senja with mountains and ocean.
The challenge:

Managing growing demand within limited grid capacity

Key challenges included:

  • Growing demand from the fishing industry and households
  • Limited capacity in the existing local grid
  • Further business expansion increasing future demand
  • A need to explore cost-effective ways of managing electricity consumption

Husøy and Senjahopen are located at the end of the local power grid, where increasing electricity demand from fish processing and other local activity placed additional requirements on grid capacity and voltage stability.

Further business development was expected to increase demand on the local grid. Expanding the grid would require significant infrastructure investment, so alternative ways of managing local capacity and electricity demand were evaluated. Battery energy storage was identified as one way to reduce peak loads and make better use of the existing grid.

Buildings and road in Senja with mountains in background.

Senja, Norway

The Solution

Battery energy storage as a local grid buffer

To address these challenges, grid operator Arva AS implemented a Battery Energy Storage System (BESS) designed to provide local grid support at Husøy and Senjahopen.

The battery energy storage system acts as a local energy buffer. It stores energy during periods of lower demand and releases it when demand increases, helping reduce peak loads and pressure on the existing grid. This supports grid stability while making better use of available grid capacity.

Battery energy storage containers with wind turbines in background.

Collaboration from delivery to long-term operation

Smart Senja was delivered in collaboration between Arva AS, Rolls-Royce Power Systems and BOS Power. BOS Power was responsible for system integration of the battery containers and transformers, including design, project management and delivery.

The solution comprises three mtu EnergyPack units installed at Husøy and Senjahopen. BOS Power also provides long-term support through a 10-year Service Level Agreement, covering the continued operation and maintenance of the energy storage systems.

Smart Senja at a glance
  • Norway’s largest battery energy storage installation
  • Three mtu EnergyPack units
  • 2 MWh storage capacity at Husøy
  • 0.8 MWh capacity at Senjahopen
  • BOS Power responsible for system integration
  • 10-year Service Level Agreement
BOS-P_Battery-container_v1-1

Battery Energy Storage System

Explore BOS Power's battery energy storage systems for grid support, energy flexibility and reliable operation.

  • Delivers utility-scale battery energy storage systems (BESS) in the Nordics
  • Covers engineering, system integration, and commissioning across the project lifecycle
  • Ensures grid code compliance and reliable project delivery
Explore our Battery Energy Storage System →
Large indoor installation of energy storage units and control systems.

Local energy storage for a more reliable power supply

“We are a proud contributor of sustainable and smart energy supply for northern Senja. By installing local energy storage solutions that will function as energy buffers, we will, together with the local power supplier Arva AS, help provide a satisfactory power supply for residents and businesses at Senja.”

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Carsten HøjerupDirector PowerGen, BOS Power

Frequently asked questions

What is the Smart Senja project?

Smart Senja is an energy storage project on Senja in Northern Norway, developed to help strengthen the local power supply and manage increasing electricity demand. The solution uses battery energy storage as a local energy buffer to support the existing grid.
How does battery energy storage support the grid at Smart Senja?

The battery energy storage system stores energy during periods of lower demand and releases it when demand increases. This helps reduce strain on the existing grid, manage demand peaks, and support a more stable and flexible power supply.
What battery energy storage solution was delivered?

The Smart Senja solution includes three mtu EnergyPack units. The installation provides 2 MWh of storage capacity at Husøy and 0.8 MWh at Senjahopen.
What was BOS Power’s role in the Smart Senja project?

BOS Power was responsible for system integration of the battery containers and transformers, including design, project management, delivery and maintenance. The project was delivered in collaboration with Arva AS and Rolls-Royce Power Systems.

Talk to an Energy Storage expert

Are you exploring how battery energy storage can support grid stability, capacity constraints, or growing power demand?

Our Energy Storage team can help you assess your needs, discuss possible system configurations, and identify the right next step for your project.

  • Discuss your energy storage requirements
  • Explore suitable BESS configurations
  • Talk through integration, operation and long-term service
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Kim Strate Kiegstad Head of Energy Storage

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t. +45 53 60 13 30
Kim Strate Kiegstad Head of Energy Storage
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