Key technical components of a solar PV system go through the rigors of testing, evaluation, and certification — but what about when they're all assembled and running as a full PV plant? VDE and Fraunhofer ISE think they've found a new way to ensure the performance, reliability — and "technical bankability" — of solar PV plants with a new system-level certification spanning quality, safety, and performance of the plant as a whole and its components.