The most common and most likely answer to this crossword clue is the 5 plus 5 letter word GREEN PARTY
I've seen this crossword clue in The Guardian
G
R
E
E
N
P
A
R
T
Y
More clues leading to the result GREEN PARTY
- Politicians with role in renewed energy?
- Political group has signal to go and have fun
- Organisation taking role in recycled energy?
- Organisation that takes role in energy recycling?
- Saviours of the planet like Kermit to have fun
- Political group, inexperienced, somewhat ignored by Liberal
- Political alliance, colour inspiring constituent to follow a couple of environmentalists?
- Jealous person in political organisation
Buddy explains!

The straight part
We know that "Saviours of the planet" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case saviours of the planet = green party.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.