| A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |

Y

Yawing

This is the rotation of the rotor axis about a vertical axis (this is only for horizontal axis WT only)

Yaw misalignment

Horizontal deviation of the WT rotor axis

Yellowcake

Natural uranium concentrate that takes its name from its color and texture.

Yield

The yield of a PV plant measures the amount of energy that it products with a given power, measured in watt-peak (Wp).