Compact substations and distribution cabinets
As cities grow and energy networks expand, reliable power distribution needs to be both smarter and more space-efficient. Harju Elekter answers this demand with a comprehensive range of compact secondary substations and distribution cabinets designed for modern infrastructure and everyday reliability.
Our portfolio includes compact secondary substations and outdoor distribution cabinets built to perform in demanding conditions. These solutions help utilities and infrastructure partners deliver safe, efficient and long-lasting power distribution.
Compact secondary substations from Harju Elekter are delivered as turnkey CSS solutions and tailored to the specific requirements of utility companies, developers, EPC contractors, industrial facilities and wholesalers. Available across Europe, our compact secondary substations can be customized according to project scope, volume and technical specifications, making them a flexible choice for both standard and complex power distribution projects.
With a strong track record of successful installations in Estonia, Latvia, Finland, Sweden and Norway, Harju Elekter combines proven quality with deep regional expertise. This practical experience helps ensure smooth project delivery and reliable performance.
With a strong track record of successful installations in Estonia, Latvia, Finland, Sweden and Norway, Harju Elekter combines proven quality with deep regional expertise. This practical experience helps ensure smooth project delivery and reliable performance.
Our product line
Concrete Substations HEKA
Concrete substations HEKA C are delivered as fully integrated turnkey systems, engineered to meet the evolving needs of various end users. While utility companies remain the primary customers, CSS solutions are used by clients requiring new or expanding existing medium-voltage connections to the grid.
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Metal Substations HEKA
Metal Substations HEKA compact substations (CSS) are delivered as fully integrated turnkey systems, making it easier to implement reliable medium-voltage grid connections with predictable quality and faster project execution. Designed for modern power distribution needs, they provide a robust foundation for utilities and other operators upgrading networks, expanding capacity or building new connections to the MV grid.
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Outdoor Distribution Cabinets HETR/ HELK
HETR and HELK series cabinets are low-voltage distribution cabinets designed for low voltage switching, circuit protection, current limiting and electricity metering. HETR cabinets are used on consumer supply lines, supporting safe and efficient customer connections, while HELK cabinets provide reliable permanent network connections. The HELK range also includes pole-mounted cabinets for control measurements and metering applications, helping ensure stable operation in everyday power distribution networks.
More details about Outdoor Distribution Cabinets HETR/ HELK
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References
Electrical Distribution Building
Helios In 2025, Harju Elekter completed the design and construction of a building for electrical distribution equipment, including theinstallation of customer-supplied materials. Our product was…
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BESS Station for Stella Futura
CombiFLEX In 2024, Harju Elekter delivered a plug-and-play prefabricated E-house to Stella Futura for a battery energy storagesystem (BESS) project in central Sweden. Our product was used to enable grid-connected…
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Prefabricated Substation for E.ON Energidistribution AB
CombiFLEX To support the growing energy demand in the expanding district of Veddesta, northwest of Stockholm, Harju Elekter delivered a…
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