It's the part
which generates the ELECTRICITY.
Breaking Bad Season 2, Episode 9
If you don't have ELECTRICITY,
then you probably don't need cable.
The Big Bang Theory Season 2, Episode 14
And he didn't think that it was fair
for people to pay for ELECTRICITY...
The Big Bang Theory Season 8, Episode 23
-(ELECTRICITY CRACKLES)
-(POWERING DOWN)
Westworld Season 3, Episode 8
Going out to discover ELECTRICITY?
The Big Bang Theory Season 3, Episode 6