Established in 2010 by a team of seasoned French solar industry veterans, STS is the result of our passion to advance sustainability progress, and our relentless drive to solve our client’s challenges.

At STS, through tailored technical and expert advisory services, we enable our clients to make informed decisions that positively impact sustainability advancement. 

Since inception, STS has consistently led the way in pioneering conformity assessment within the solar industry. We have the longest track record of inspection and audits in the industry, we spearheaded the industry's first standard for the approval of PV module manufacturing and dispatch, we were the very first ISO17020-accredited inspection body dedicated to renewable energies, and we trailblazed sustainability assessments in the industry. These groundbreaking steps have solved challenges for buyers worldwide, enabling them to set the right standards for mass production of solar and storage components.

With a presence in 15 countries across the Globe, STS brings expert knowledge to a global scale. We boast the largest fleet of full-time inspectors in the industry, conducting over 500 quality assessment projects annually. Our clientele includes leading EPCs, developers, independent power producers, and utility companies, spanning across more than 30 countries. Nine of the top 10 global developers are STS clients. 

STS takes immense pride in providing an exceptional client experience, reflected in our consistently high Net Promoter Score (NPS). Our dedication to delivering top-notch service has earned us the trust and loyalty of our clients, resulting in a significant portion of our business being generated through word-of-mouth referrals. Our commitment to excellence drives us to continually enhance our services and exceed the expectations of our clients, solidifying our reputation as a trusted leader in the industry.

For more information, visit www.sts-certified.com.

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