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Impartiality and Independence are our strict commitments. 

See how we manage our risks in accordance with international standards

SECURE YOUR SOLAR AND STORAGE
ASSETS PERFORMANCE

Founded in 2010 by French solar veterans, STS is an independent ISO17020-accredited Inspection Body specialized in the photovoltaics and energy storage industry. We support solar and storage developers’ procurement effort through suppliers evaluation, manufacturing sites audits, inspections and quality control services, and technical due-diligence services.

The Most Qualified

Inspection Body

STS is accredited ISO17020:2012, the highest qualification level of inspection bodies

Technical Competence

Inspection Methods

Impartiality and Confidentiality

Safety at Work

Use of Suitable Equipment

60+
Full-time Inspectors

5%
PV modules production inspected yearly

50+ millions
PV modules in database and analyzed

~20GW
Inspection Track-Record

OUR SERVICES

We provide unbiased and professional inspection and tests services

Our team of experts helps buyers and lenders make the right technical decisions, mitigate risks, and increase their assets performance.

PV Materials

Ingot, Wafer, Cell, Backsheet, EVA...

PV Modules

Mono/Multi, Mono-facial/Bi-facial...

Balance-of-Systems

Inverters, Transformers, Structures/Trackers

Power Plants

Greenfield, In-Construction, Operating

TECHNICAL & INDUSTRY-RELATED PARTNERS

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LATEST NEWS

SEIA released Solar Supply Chain Traceability Protocol 1.0 co-authored by STS

May 12, 2021

1GW of Solar: The Cost of Impartiality

Mar 14, 2021

STS Launched the White Paper on Larger PV Modules

Dec 16, 2020