· university
Electrical energy
An electrician uses a screwdriver and insulating tape.
Atomisphere
nuclear energy
Wind energy itself is free, how one uses it is what starts to incur costs
volcano
What about a Quark? or if you allow slang, a quake.
Nuclear
dry hole
Sure. The word incorporation starts with the letter i.
dresser or draper
Diesel fuel is a source of energy. It begins with the letter d.