wind power
風力
alternative energy
business
caucasian
copy space
efficiency
electrician
energy
energy crisis
engineer
environment
equipment
forecasting
fuel and power generation
generator
global warming
hardhat
horizontal
hot water tank
industrial equipment
industry
installing
maintenance engineer
male
manager
manual worker
men
nature
objects
one person
power
propeller
protective workwear
repairing
service
solar energy
solar panel
solar power station
technician
technology
thumbs up
turbine
turning
wind turbine
working class