The cost of gate openers varies depending on the type, power source, and features. Generally, basic electric gate openers are cost-effective for residential properties, while more robust commercial models are pricier but offer greater durability and functionality. Regarding energy efficiency, solar-powered gate openers are the most economical in the long run, despite a higher initial investment, as they reduce ongoing energy costs. Electric and battery-operated models are designed to be energy-efficient, with newer models including features like standby modes to conserve power when not in use.