7 January, 2021 In general, a PV solar installation is fairly low-maintenance. But in locations that experience low rainfall or wind, or if placed with minimal panel tilt, dust and bird droppings can accumulate and thus affect the electricity being generated. Moreover, at locations close to freeways, highways, factories and airports, a solar unit tends to build up more grime, oil and dirt, hampering productivity. In fact, over an extended period of time, solar panels can lose up to 15-25% of their efficacy if not cleaned properly. So, it’s wise to go around to your PV solar panels frequently and do some much needed cleaning.