Eco-friendly hotels in Switzerland typically utilize various renewable energy sources to reduce their environmental impact. Some common sources include hydropower, solar power, and geothermal energy. Hydropower is especially prevalent in Switzerland due to its abundance of rivers and hydroelectric dams. Solar panels are often installed on hotel roofs to harness sunlight for electricity, while geothermal energy taps into the Earth’s heat for heating and cooling systems. These renewable energy sources help eco-friendly hotels in Switzerland to operate more sustainably and reduce their carbon footprint.