The most common and most likely answer to this crossword clue is the 9 letter word RENEWABLE
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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 RENEWABLE mean?
RENEWABLE noun- A thing that is renewable; especially, a renewable source of energy.
- A renewable resource.
- Able to be renewed; capable of renewal.
- (of a resource) Sustainable; able to be regrown or renewed; having an ongoing or continuous source of supply; not finite.