The most common and most likely answer to this crossword clue is the 6 letter word DYNAMO
I've seen this crossword clue in The Times
D
Y
N
A
M
O
More clues leading to the result DYNAMO
- Manic Monday for energetic person
- Busy person ruined Monday
- Current producer withdraws a good deal in style
- Energetic guy from Soho many dearly recalled
- Energetic type getting Monday off
- Energetic person upset a lot in party
- Energetic sort many recalled in party
- Energetic person's awful Monday!
- Andy repositioned second live wire
- . Electricity provider upset a lot in party
Buddy explains!
The straight part
We know that "Power source" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case power source = dynamo.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.
What does DYNAMO mean?
DYNAMO noun- An electricity generator, a dynamo-electric machine.
- An energetic person.