About us

Who are we?

WE ARE STRI – a leading independent laboratory specializing in high voltage testing.

Who do we help?

Our clients are power grid companies, power producers, industries, railway companies, authorities, agencies and manufacturers of electrical equipment all over the world.

Where are we?

Our main offices and laboratory facilities are located in Ludvika, in Sweden’s High Voltage Valley.

Why choose STRI?

There’s no substitute for experience.

We have plenty of it!

  • Nearly 25 years since STRI began operations
  • State-of-the-art testing facilities and climate test hall with one of the highest performances in the world allowing pollution testing of 800 kV HVAC & HVDC equipment

Make the right choice – STRI

Some of our key milestones

2015STRI expands again. New test hall. New testing opportunities.
2014STRI performed a unique full-scale DC voltage test on insulators regarding pollution and ice performance
2013Sweden’s largest Smart Grid test lab

Nordic Smart Grid RD 2 RD&D
2011One million volt UHVDC world record!
2010Powerful expansion

The ultra HVDC specialist – 800kV HVDC – V-string in porcelain tested for corona and pollution, India
2009STRI celebrates 20 years in operation in HVV
2008World’s 1st 800 k V UHVDC testing completed at STRI
2006Inauguration of unique testing site at STRI for 800 kV
1990STRI’s high voltage lab built