Outdoor tests are offered as a means to predict the long-term outdoor performance of a photovoltaic system. Data are collected over a period of a year, stored locally in a database and made available in real time over a secure internet connection. Three test programs are offered, all of which can be renewed annually. All tests are performed in accordance with IEC standard 61724 Photovoltaic system performance monitoring – guidelines for measurement, data exchange and analysis, and standards 61215 and 61646 where appropriate.