Ключевые слова: alternative, atomic, battery, bioenergy, biomass, carbon, chemical, coal, conservation, efficiency, electricity, electromagnetic, emission, energy consumption, energy conversion, energy efficiency, energy production, energy sources, energy storage, energy transfer, fossil fuels, fuel, generator, geothermal, green, grid, heat, hydropower, kinetic, light, mechanical, natural gas, nonrenewable, nuclear, oil, photovoltaic, potential, power, renewable, renewable energy, solar, solar power, sustainable, sustainable practices, thermal, turbine, wind, wind power,