BESS platform Ingrid Capacity has received construction permits for two projects in Sweden’s SE4 electricity region, which it said could start construction as early as this year.
The 100MW/400MWh Vaggeryd project and the 100MW/200MWh Horsaryd project will be among the country’s largest, and will double its portfolio from 650MWh to 1.2GWh when they go online in 2028.
However, the permit for Vaggeryd is only for 200MWh, with a re-application for updated specs including the larger, 400MWh size.
The Vaggeryd project will be the country’s first major 4-hour battery energy storage system (BESS), which Ingrid CEO Axel Holmberg called an ‘exciting’ development. The increase in duration from 2-hours to 4-hours, which appears to have been decided after the initial planning application, likely reflects the Sweden market’s evolution from ancillary services to energy trading.
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Ingrid Capacity develops, builds and optimises its BESS projects, as Holmberg has explained to ESN Premium in past interviews. It typically works with a long-term equity investor on a portfolio-by-portfolio basis, with its partners in Sweden including BW ESS and SEB Nordic Energy Fund. It hasn’t revealed whether there is an external investor for the two new projects.
Its portfolio with SEB also appears to have increased in size between initial design and project completion. Its publicly stated total planned capacity increased from 194MWh to 240MWh between September 2024 and September 2025 (when the first of them was inaugurated).
BW ESS CEO Erik Strømsø discussed the wider lithium-ion BESS industry’s move to longer and longer durations (and more) in a video interview with ESN Premium at the Energy Storage Summit 2026 in London in February.
Since initially deploying in Sweden (with BW ESS), Ingrid has then expanded to Finland, Germany and France. It will put a 70MW/140MWh system online with SEB in Finland this year, while it recently announced partnerships with developers in Germany and France.
See all our coverage of BESS activity in Sweden here, including recent moves by UK energy major Centrica to build its own projects there as well as optimise another company’s.
