abstract
alert
alternative
bulb
chart
check
clean
consumption
costs
eco
ecological
ecology
editable
efficient
electric
electricity
energy
environment
friendly
graph
green
home
house
housing
icon
leaf
level
light
lightning
line
lined up
meters
money
naturale
ns
outline
perfect
power
production
recharge
renewable
save
set
sign
stroke
sustainability
symbol
thin
tsar