Source of power many do want to change (6)
I believe the answer is:
dynamo
'change' is the definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
'source of power many do want' is the wordplay.
'many do' anagrams to 'DYNAMO'.
Though, I'm not sure how the anagram is indicated.
'to' is the link.
Can you help me to learn more?
(Other definitions for dynamo that I've seen before include "Energy converter - hard worker" , "Electric current generator" , "Forceful person" , "Electricity generator or energetic person" , "Energetic person (colloq.)" .)