WikiSolar is a community-led knowledge resource dedicated to solar photovoltaic projects and engineering. Created by people working across the solar and renewable energy industries, it serves readers involved in home systems, microgrids, and large solar farms. Its aim is to make solar project development, design, installation, and commissioning easier to understand and more accessible worldwide.

The site offers practical explanations of PV technologies, system components, architectures, engineering methods, safety, and project delivery. Topics range from solar modules, inverters, batteries, mounting systems, cables, and monitoring to system sizing, electrical protection, energy production estimates, and applicable standards. WikiSolar also covers engineering deliverables, installation risk analysis, quality management, commissioning, operations and maintenance, project planning, budgets, and financial measures such as CAPEX, OPEX, and LCOE.

Users can access free drawings, templates, and tools, including resources for layouts, electrical and mechanical drawings, cable sizing, and PV or battery capacity planning. Articles are written voluntarily, and visitors are invited to edit existing pages, create new material, and join community discussions