The Most Qualified Inspection Body
STS is the first company ISO17020:2012 accredited for PV modules pre-shipment inspection, the highest qualification level of inspection bodies.
Learn More- Technical Competence
- Inspection Methods
- Impartiality and Confidentiality
- Safety at Work
- Use of Suitable Equipment
Founded in 2010 by French solar veterans, STS has been consolidating its position as a TIC (Testing, Inspection, and Certification) company that counts in the solar and storage industry. Accredited under ISO/IEC17020:2012, STS supports solar and storage developers’ procurement efforts in Asia through supplier assessment & qualification, inspection and quality control, and technical advisory services.
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60+
Full-time Inspectors/ Auditors/ Engineers
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>35GW
PV Modules Production Supervised
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>65GW
Supply Chain Assessed
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>7GWh
Battery Systems Inspected
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>100
Active Clients (representing >40GW/year)
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300/year
Quality Assessment Projects
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Solar
- Suppliers and Products Assessment
- Pre-dispatch Inspection
- Post-dispatch Inspection
- Testing
- Technical Advisory
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Energy Storage
- Suppliers and Products Assessment
- Production Supervision & Expediting
- Acceptance Tests Witnessing (FAT &SAT)
- Technical Advisory
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Substainable Supply Chain Services
- Factory Audit
- Supply Chain Mapping
- Supplier’s Capability and Risk Assessment
Featured Projects
PRODUCTS INSPECTED BY STS GET INSTALLED WORLDWIDE
Testimonial
“As World No. 1 EPC for Solar Business, Insofar, solar PV modules Quality are concerned, we deploy STS expertise, to strike the balance between Quality and Sustainability. Our deployment of STS is not limited to traditional “Inspection” but we clearly benefit from the insights and value add provided by the STS team of experts, which makes our supplied PV modules sustain the design life.”
- EKS Sreekumar
- Group Quality Head
- Sterling & Wilson
“Working with STS greatly contributes to our objective of securing our PV assets performance. The solutions offered by STS go beyond a mere inspection service. Their quality control approach, detailed procedures and deep knowledge of manufacturing risks are unique in the solar industry to guide and support developers like ReNew Power when implementing our quality plan.”
- Anshuman Johri
- Sr. Vice President - Quality
- ReNew Power
“We are using only STS for inspection. They are working exquisitely and in a most transparent way for us. We are happy with what STS gets us. Projects always bring unexpected problems. Whenever we need to discuss a waiver or a special situation, STS gets to support us in identifying a solution. Being able to support us in finding a solution based on what is important for us is very critical. We really need that help from STS.”
- Jan Vedde
- Senior Project Manager
- European Energy
“Impartiality is very important to us when we select an inspection partner. It is important to stick to the criteria, facts, and report evidence. We recognize impartiality in STS values, and they do take it very seriously in their scope of work. STS is our eyes in China. We are confident that modules we are purchasing and buying arise to the quality we have expected. STS manages to answer our short-notice inspection demands, they show us dedication, fast reactivity, and great work. We are satisfied with STS savviness, reactivity, and professionalism. We wish to maintain a long-time partnership with STS.”
- Thomas Borrel
- Project Sourcing Manager
- European Energy
