Eco-Friendly: Solar generators are eco-friendly and lead to zero CO2 emissions, whereas gas generators produce extremely high CO2 emissions. Quiet: Solar generators work at a noise level of less than 7 decibels, making them whisper-quiet, whereas gas generators produce 57 decibels of noise. Simplicity: Solar generators are extremely easy to use with the press of a button. Budget-Friendly: After the initial cost, harvesting and storing solar energy is completely free. There are no ongoing costs. Gas generators have extremely high fuel costs.