The most common and most likely answer to this crossword clue is the 11 letter word ELECTRICITY
I've seen this crossword clue in The Times
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More clues leading to the result ELECTRICITY
Buddy explains!
The straight part
We know that "form of energy" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case form of energy = electricity.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 ELECTRICITY mean?
ELECTRICITY noun- Originally, a property of amber and certain other nonconducting substances to attract lightweight material when rubbed, or the cause of this property; now understood to be a phenomenon caused by the distribution and movement of charged subatomic particles and their interaction with the electromagnetic field.
- The study of electrical phenomena; the branch of science dealing with such phenomena.
- A feeling of excitement; a thrill.
- Electric power/energy as used in homes etc., supplied by power stations or generators.