Alfen and Hydro launch renewables-integrated BESS projects in Sweden

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System integrator Alfen will provide a BESS for co-location with a wind farm in Sweden while aluminium company Hydro has inaugurated a solar and BESS project at one of its extrusion facilities.

Alfen supplying BESS for IPP Rabbalshede Kraft

Netherlands-headquartered Alfen will supply its ‘TheBattery Elements’ battery energy storage system (BESS) product to independent power producer (IPP) Rabbalshede Kraft for deployment at a wind farm in Femstenaberg.

The 20MW/20MWh system will be supplied along with a 10-year service agreement from Alfen, and will be commissioned in Spring 2025. Rabbalshede Kraft plans to add a 30MW solar PV power plant to the site in future as well.

The announcement indicated the BESS would both optimise the output of the wind project (42.6MW, comprising seven Siemens Gamesa 6.6MW wind turbines) as well as provide ancillary services to Sweden’s transmission system operator (TSO) Svenska kraftnät.

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Most projects in Sweden are 1-hour projects to target the ancillary services market, which makes up the vast majority of today’s revenue stack, as discussed by the CEO of BW ESS, currently building the country’s largest BESS portfolio, in an interview this week (Premium access).

The announcement from Alfen echoes a 20MW order it received in January from another IPP in Sweden, Vasa Vind, also for co-location with a wind farm.

Hydro starts operating solar and BESS at Vetlanda factory

In concurrent news, aluminium company Hydro (official name Norsk Hydro) has started operating three BESS unit in parallel with ground-mounted and rooftop solar at its extrusion facility in Vetlanda. Aluminium extrusion is the process of creating fixed cross-sectional pieces from heated aluminium alloy.

The solution comprises seven rooftop solar installations totalling 2.1MWp, a 2MWp ground-mounted solar array and three BESS units totalling 4.5MW (MWh not disclosed). The project has a goal of no net loss of biodiversity for natural habitats.

The BESS will provide flexibility to Hydro to optimise the self-consumption of renewable energy but will also provide support services to the grid in Sweden.

The ultimate goal is to make Hydro’s extrusion facilities in Vetlanda and FinspÃ¥ng net-zero via renewable energy.

For an overview of the Sweden and Finland energy storage markets, see a recent article written for Energy-Storage.news by research firm LCP Delta.

3 November 2026
Málaga, Spain
Understanding technology and supplier selection for Europe’s utility-scale PV market in 2027. PV ModuleTech Europe 2026 is a two-day conference that tackles these challenges directly, with an agenda that addresses all aspects of PV module, inverter and battery supplier selection; product availability, technology offerings, supply chain traceability, quality assurance, factory auditing, system reliability, and supplier bankability.

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