Ключевые слова: 3d, alternative, background, battery, business, character, charging, clean, concept, design, eco, ecological, ecosystem, electricity, energy, environment, environmental, flat, generator, graphic, green, hydro, icon, illustration, industry, infographic, isometric, isometry, line, modern, outline, panel, people, power, recycling, renewable, room, safety, scene, solar, station, sun, sustainable, technology, turbine, web, website, wind, windmill,