Bringing Value from R&D-to
Market Entry-to Bankability

PV Engineering Testing

IEC-UL Certification

Outdoor Testing


Site Commissioning

Accelerated UV

Salt Spray

Reliability and Durability

Hail, Snow, Hurricane

Salty Outdoor Conditions

Rain (Wet/Cold) and UV (Hot) Overtime

BOS Testing

Racks / Trackers

Cells, Modules, Panels

Inverters and Micro-Inverters

Connectors, Cables, Junction Boxes

Encapsulants, Superstrates and Substrates

Complete System Testing

CPV Concentration Rating

Soiling Effects

Energy Yield

SAM Model Generation

NOCT and Temperature Coefficients


Enabling World-Wide Customers to attain unequaled Time-to-Market


RETC, LLC (Renewable Energy Test Center, LLC) is an engineering services, and certification testing provider for photovoltaic and renewable energy products. RETC is TÜV SÜD’s exclusive PV Test Laboratory in North America and Global Partner complementing its strategy to deliver a One-Stop-Shop capabilities for the growth of PV testing and certification services. RETC is ISO 17025 accredited by A2LA, an ILAC affiliated laboratory, and awarded a CBTL status, the highest accreditation in IEC scheme.

RETC offers Outdoor Endurance and Long Term Performance testing capabilities at its Nevada test site for desert/southwest weather conditions and at its Philippines test site for tropical high temperature and high humidity weather conditions.


RETC brings value from R&D - to Market Entry - to Bankability, focusing on providing "Unequaled Time-to-Market" as a key component of Customer Value-Chain. We want to help people bring ideas to life that will benefit us all. We believe in early customer engagement to help ensure a smooth product certification and new product introduction (NPI) process.