Founded in 2010 by French solar veterans and accredited under ISO/IEC17020:2012, STS supports solar and storage developers’ procurement effort in Asia through supplier assessment & qualification, inspection and quality control, and technical due-diligence services.

STS is the global market leader for PV modules pre-shipment inspection services. Initiated in 2011, STS has released in 2018 the first industry standard for approval of PV modules manufacturing and dispatch, solving the challenge for buyers to set the right quality level at mass-production.

Present in 9 different countries globally with operational focus in Asia, STS enjoys the largest inspector fleet (full-time) in the industry and conducts more than 200 quality assessment projects per year for clients in more than 30 countries including leading EPCs, developers, independent power producers and utility companies.