Ключевые слова: alternative, build, builder, carrying, clean, climbing, colleagues, cottage, coworkers, efficiency, electrical, electrician, energy, engineer, equipment, generator, helmet, house, install, installation, instrument, lift up, man, metal, metal beams, module, mount, panel, photovoltaic, power, rails, renewable, roof, rooftop, solar, solar energy, solar panel, source, station, support, system, team, teamwork, technology, together, tools, work, worker, workman,