Energy efficiency is one of the most important factors to grow economies, secure a constant source of energy for people, and help the environment. Since most of our energy is sourced from fossil fuels, we are directly contributing to the harm of the environment by using them. When fossil fuels are used, they generate harmful greenhouse gases. Although energy-efficient methods such as solar panels or wind farms are more expensive to use than fossil fuels, they help to ensure a brighter future for the planet. Homeowners can install solar panels on their roof or in their yards. Wind farms are found all over the world, and generate power for thousands of families.
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