40s
adjustable wrench
alternative energy
builder
caucasian
conserving energy
copy space
electricity
energy
engineer
environmental conservation
fitting
forties
fuel and power generation
generating
hard hat
home
home exterior
home improvement
horizontal
house
installing
job
kneeling
male
man
men
one person
panel
people
person
positioning
power supply
recycling
roof
skill
solar energy
solar panel
sun
sunlight
sustainable resource
tool
working
workman
wrench