About us

75 years of experience in packaging electrotechnical equipment

Since its inception in 1945, operations at Jaco have focused on developing and manufacturing electrotechnical products for electricity network owners and industry. Until the mid-1990s, the products were mainly transformer stations containing medium voltage switchgear 12 – 36 kV, transformers and low voltage switchgear. Today, operations mainly consist of developing and manufacturing customised technology housing and modular buildings for installation of technical equipment, the focus on electrical engineering, automation and control systems dominates.

More than 60 committed and experienced employees ensure that products and solutions maintain high and consistent quality prior to delivery from the factory. Together with our own staff and carefully selected subcontractors, all types of assembly and installation are available. Offices and production are located on the coast in Hargshamn, approximately 120 km north of Stockholm. In very close proximity is the international port facility Hargs Hamn AB with connection to normal-track railway and RoRo ramp for boarding by truck and railway. The port facilities also offer a unique opportunity for intermediate storage of modular buildings.

The final destination and commissioning of the majority of the company’s annual production of modular buildings is outside Sweden. Together with world-leading companies such as Siemens, ABB, Hitachi ABB, Rittal, Alstom, and others, Jaco develops the packaged facilities and products of the future for sustainable and renewable electricity production, distribution and transmission.

Package of Technology®


INDUSTRIAL ELECTROMECHANICS - Operations include development, design, manufacturing and testing. The mechanical production is based on materials that are processed in CNC-controlled machine equipment. The process of joining parts is by welding, screw joints, riveting or gluing. Advanced surface treatment including cleaning and anti-corrosion painting is included in the business. In the final processes, electrical and mechanical equipment as well as HVAC solutions are installed after which controls, routine testing and securing for transport are performed before delivery.

ABILITY & CAPACITY - The business processes and overall planning are optimised to quickly adapt to the current needs. When own resources are not enough, carefully selected subcontractors are hired for electrical installations, welding and mechanical assembly. The approved subcontractors are informed and trained in the company's requirements and safety routines.





100 MSEK



ISO 3834-2:2005 – SWE Show document

ISO 3834-2:2005 – ENG Show document

EN 1090-1:2009+A1:2011 - SWE Show document

EN 1090-1:2009+A1:2011 - ENG Show document

Certificate of Pre-Qualification-ACHILLES Show document

Certificate of Pre-Qualification-TRANSQ Show document

Högsta kreditvärdighet Bisnode Show document

Certificate of membership UNCE-ACHILLES Show document

Films of our company