*Maximize efficiency and energy output: Dirt, dust, pollen, bird droppings, and other debris can create a blockage that prevents sunlight from reaching the solar cells, decreasing the panels' ability to produce its highest electricity. Studies show dirty panels can loose up to 5% - 25% of their efficiency depending on the severity of the unwashed panels and its surrounding environment. According to the National Renewable Energy Laboratory, "cleaning your solar panels removes these obstructions and allows them to perform at their optimal capacity, leading to higher energy production and greater electricity bill savings." 

*Extend lifespan and prevent damage: An increase of dirt and debris can rise the temperature of the solar panel system, which can / will lead to damage over time. Cleaning will keep your panels at optimal operating temperatures and will reduce wear and tear, extending the lifespan of your panels.

*Maintain warranty validity: Some manufacturers and installers may enforce regular solar cleaning as a condition of their warranty. Ignoring cleaning could potentially void your warranty, leaving you liable for all repair or replacement costs in case of malfunction.

*Improve return on investment (ROI): Solar panels are a significant investment, and you want to ensure you get the maximum return as quickly as possible. Increased energy production due to clean panels translates into greater electricity savings and a faster ROI.