Energy Words Or Abbreviations

Question 0

Grid parity

Answer 0

The point where electricity output from eg a PV installation over its lifetime equals the cost of an equivalent amount of grid-sourced electricity.

Parity occurs at different points, depending on the end consumer.

Question 1

CCGT

Answer 1

Combined cycle gas turbine.

The principle is that the working fluid of the first heat engine is; after completing its cycle (in the first engine), still low enough in its entropy, that a second, subsequent, heat engine may extract energy from the waste heat of the working fluid of the first engine. These multiple streams of work are then combined upon a single shaft, turning an electric generator, the overall net efficiency may be increased by 50-60 %