"Least bad" megacorp? (5)

I believe the answer is:

tesla

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'megacorp?' is the definition.
I can't tell whether this definition defines the answer.

'least bad' is the wordplay.
'bad' indicates anagramming the letters.
'least' with letters rearranged gives 'TESLA'.

Can you help me to learn more?

(Other definitions for tesla that I've seen before include "Californian company specialising in electric cars" , "electrical unit" , "Physics unit" , "SI unit; steal (anag.)" , "Physicist" .)

I've seen this clue in The Independent.

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