This report provides an in-depth analysis of key performance indicators (KPIs) essential for assessing and enhancing the operational performance of photovoltaic (PV) systems. . A rating system to ensure durable design of PV modules for the climate and application of interest A guideline for factory inspections and quality assurance (QA) during module manufacturing A comprehensive system for certification of PV systems, verifying appropriate design, installation, and. . Following are the key points: 1. Quality checks on raw materials like glass, EVA sheet, junction box, backsheet are important as they affect PV module quality. Glass with ARC coating and high transmittivity increases power output. . The Renewable Energy Ready Home (RERH) specifications were developed by the U. Environmental Protection Agency (EPA) to assist builders in designing and constructing homes equipped with a set of features that make the installation of solar energy systems after the completion of the home's. . Module manufacturers, installation and O&M (operations and maintenance) providers can obtain quality management (QM) or quality assurance (QA) certification. (We especially need people with PV problems.