TÜV Rheinland has been active in the solar industry since the early days of commercial photovoltaics. Our more than 40 years of experience combined with a global network of state-of-the-art laboratories and more than 300 PV and power electronics experts ensure that our assessment methods are reliable, correct and internationally recognized.

PV projects require reliable technical assessment and documentation to support financing, acquisition, construction, acceptance and long-term operation. Independent assessments help stakeholders evaluate whether the selected technology, plant design, contracts, grid connection, operation & maintenance concept and financial assumptions are technically sound and bankable. Banks, institutional investors, project developers and PV plant owners rely on TÜV Rheinland for technical due diligence, performance verification and supply chain assessment.

TÜV Rheinland supports PV projects at every major project stage. From supplier selection, supply chain audits, factory inspections, production monitoring, pre-shipment testing, container loading supervision, to construction monitoring performance verification, operational assessment and on-site solar module testing. This helps reduce uncertainty, detect risks early and improve the long-term reliability and performance of the asset.

The TÜV Rheinland PV Mobile Lab brings accredited, calibrated testing equipment directly to ports, construction sites or operating PV plants. It can test up to 200 modules per day with laboratory-grade accuracy according to IEC 61215 and IEC 60904. The PV Mobile Lab enables output power measurements, electroluminescence imaging and bypass diode testing, eliminating the need to ship modules to a distant laboratory.

TÜV Rheinland assesses ESG policies, material traceability and supplier compliance across global PV procurement routes. This helps stakeholders manage regulatory and reputational risks associated with critical materials.

With accredited PV laboratories, experienced inspectors and solar specialists across all major markets, TÜV Rheinland supports solar projects in different regions, for all PV technologies and project phases.