Shouted in glee about powerhouses abandoning USSR (7)

I believe the answer is:

whoopee

I'm a little stuck... Click here to teach me more about this clue!

'shouted in glee about powerhouses abandoning ussr' is the definition.
I can't judge whether this definition defines the answer.

'about powerhouses abandoning ussr' is the wordplay.
'about' indicates anagramming the letters.
'abandoning' suggests deleting specific letters.
'powerhouses' with 'ussr' taken away is 'powehoe'.
'powehoe' anagrammed gives 'WHOOPEE'.

Can you help me to learn more?

(Other definitions for whoopee that I've seen before include "exclamation of joy" , "Wild revelry (colloq.)" , "Shout of delight" , "Hooray!" , "Yes!" .)

I've seen this clue in The Irish Times.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.