Hi, I'm Snage, and I'll be your guide through Renewable Energy Engineering.

Today's lesson is "Where the Energy Goes": from sun, wind, and water to what we use.

Why does hydro turn about 90% of its water's energy into power, and solar only a fifth?

Why can no wind rotor, however perfect, catch all the wind that passes through it?

And when does a simple solar water heater beat a solar module by a wide margin?