The physical installation of solar panels on a roof typically takes one to three days. But the full timeline from your first consultation to the moment your system starts producing electricity is closer to two to three months, and sometimes longer depending on where you live. How long does it take to install solar panels? Do I need planning permission for solar panels? Is my home suitable for solar PV panels? What is the best angle and roof direction for solar panels? How can I ensure my solar panel installation goes well? Considering buying solar panels? Find out first. How Long Does It Take To Install Solar Panels? The entire process of installing a solar power system takes 2-6 months. Factors such as roof accessibility and condition. To ensure the smooth installation of photovoltaic system brackets and meet design requirements, Guidance Method For The Installation Of PV System Brackets are provided, including ground-mounted, rooftop, adjustable tilt angle, floating, Building-Integrated Photovoltaics (BIPV), bifacial, and. Expect it to take between two and six months before your solar installation is complete and you're cleared to use them. Let's take a closer look at this process and provide you with a timeline, including a detailed description of each step.