cage - n. a box made of wire or metal bars in which people keep animals or birds

diesel - n. any liquid fuel used in diesel engines, whose fuel ignition takes place, without any spark, as a result of compression of the inlet air mixture and then injection

generator - n. something that produces something

grid - n. a metal frame with bars running across it that is used to cover an opening

pontoon - n. a large hollow container filled with air that is used to make a structure (such as a boat, airplane, or bridge) float on top of water

solar - adj. of or relating to the sun

tidal - adj. of or relating to tides

turbines - n. an engine that has a part with blades that are caused to spin by pressure from water, steam, or air