In a study on mansions' energy use, researchers analyzed various systems for efficient management and savings. They found that using solar power, biomass, and hybrid electricity can significantly reduce energy bills. Appliances like heaters and air conditioners consume the most power. Smart systems can monitor and adjust energy use to save money efficiently. Solar panels can drastically cut costs, especially in sunny regions. Renewable energy sources help cut electricity expenses, making huge mansions more energy-efficient and pocket-friendly.