How Long Does a Solar Panel Installation Really Take, From Survey to Switch-On?

A typical home solar installation is a streamlined process that generally spans 4 to 8 weeks from the initial survey to the final switch-on, though the actual work on your roof usually takes just one to two days. Most of this timeline is dedicated to essential behind-the-scenes tasks such as bespoke system design, scaffolding coordination, and mandatory grid notifications (DNO), ensuring your project meets all safety and regulatory standards. While smaller domestic systems under 3.68kW can often be installed and notified to the grid afterward, larger arrays may require up to 45 working days for formal approval, making early planning vital for a smooth transition.