The comic book series that sets up this film shows how Nero upgrades his mining vessel into a war vessel. He uses Borg tech to start and then whatever he can salvage from the ships he defeats.
I think it's quite plausible that the weirdness of his tech causes the lightening storm effect.
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"My hands are on fire. Hands are on fire. Ain't got no more time for all you charlatans and liars."
- Old Man Luedecke
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