Ключевые слова: alternative, checklist, clean, clean energy, collaboration, eco, ecology, electric, electrician, electricity, energy, engineer, environment, environmental, factory, farm, generator, green, green energy, industrial, industry, inspector, installation, maintenance, man, panel, performance, photovoltaic, power, profession, renewable, roof, rooftop, safety, setup, solar, solar cell, solar energy, solar panel, solar power, solar system, station, sun, sunlight, supply, system, technician, technology, walking, worker,