Make money online: YES

Solar panel cleaning can be a remote-friendly side hustle as you can typically do it from various locations without the need for in-person interactions. However, the availability of clients may depend on your location, access to areas with solar panels, and potentially different time zones. Setup costs range from $100 to $500 for basic equipment like cleaning solution, brushes, and a water source. According to online discussions, some individuals have found success in this side hustle, especially in regions with a high concentration of solar panel installations. It may take around 2 weeks to start seeing a profit, depending on how quickly you can secure clients and establish your reputation. Potential red flags include the need for proper training to avoid damaging the panels and ensuring safety when working at heights.