Ключевые слова: black man, building, cell, cellphone, check, checklist, clean, clipboard, development, electric, electricity, energy, engineer, environment, happiness, happy, industrial, industry, inspection, investment, job, light, maintenance, male, man, outdoor, panel, people, person, photovoltaic, plate, power, professional, quality, renewable, renewable energy, roof, rooftop, service, solar, solar panel, summer, sun, sunshine, sustainability, technician, test, work, worker, working,