The Power Generation ClipArt gallery offers 156 illustrations in 3 galleries including steam, water, and wind.
This science ClipArt gallery offers 102 images of methods to produce power by steam, including the coal-powered steam engine often seen on early trains and steamboats.
This science ClipArt gallery offers 40 images of methods for producing power by water, including dams and water wheels.
This science ClipArt gallery offers 14 illustrations of methods to produce power with air, including windmills.