Settle for brick interior with mains power (8)

I believe the answer is:

electric

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'mains power' is the definition.
'electric' can be an answer for 'power' (electric power is a kind of power). I'm not certain of the 'mains' bit.

'settle for brick interior' is the wordplay.
'settle for' becomes 'elect' (I can't explain this - if you can you should believe this answer much more).
'interior' indicates the central letters.
The centre of 'brick' is 'ric'.
'elect'+'ric'='ELECTRIC'

'with' is the link.

Can you help me to learn more?

(Other definitions for electric that I've seen before include "Of a type of energy" , "Form of energy for lighting" , "Type of chair, hare, shock etc" , "Thrilling (potentially shocking?)" , "Charged with sudden thrill" .)

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

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