A 350 watt solar panel typically measures 67 inches long and 40 inches wide, and weighs around 40 lbs. Monocrystalline modules with this wattage have 60 or 72 cells, while polycrystalline modules have 72 or 96 cells. The average solar panel size for residential use is around 16.5 square feet. So,. A 350 watt solar panel can generate 2100 watts of power per day, or 6.3 kilowatts per month. This figure is based on the assumption that there are 6 hours of. There are many benefits of using a 350 watt solar panel. For one, they are very efficient and can produce a lot of power. Additionally, they are very affordable and. There are a few disadvantages of using a 350 watt solar panel. The most notable one is that they are less efficient than other types of solar panels. Additionally, 350. A 350 watt solar panel falls somewhere in the middle of the power output range for solar panels. More powerful panels can output upwards of 400 watts, while.