solar – adj. of or related to the sun
tile – n. flat piece of material for covering a roof
cell – n. small container used to hold materials for producing electricity
invisible – adj. impossible to see, not visible
install – v. put a piece of equipment in a particular place
conserve – v. use carefully to prevent loss or waste
sustainable – adj. able to be used without becoming completely used up or destroyed
generate – v. produce
sensible – adj. showing good sense or judgment
vision – n. clear idea about what should happen in the future