Frothed fig cocktail without using public electricity (3,3,4)

I believe the answer is:

off the grid

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'without using public electricity' is the definition.
I know nothing about this answer so I can't tell whether this works.

'frothed fig cocktail' is the wordplay.
'cocktail' indicates anagramming the letters.
'frothed'+'fig'='frothedfig'
'frothedfig' with letters rearranged gives 'OFF THE GRID'.

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I've seen this clue in the Sydney Morning Herald.

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