#Solar-Panel-in-Vadodara #Geetanjali-Engineers What are the 2 main disadvantages to solar energy? Image result for solar panels Disadvantages of Solar Energy Cost. The initial cost of purchasing a solar system is fairly high. Weather-Dependent. Although solar energy can still be collected during cloudy and rainy days, the efficiency of the solar system drops. Solar Energy Storage Is Expensive. Uses a Lot of Space. Associated with Pollution.