nuclear power plant a good idea ( but what about meltdown
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if a bitter cut the water pipe of the nuclear power plant, you have x seconds to put back water before it explode
first step as nuclear reactor, then later in technology, a fusion reactor, way less/no risk of explosion
we already have a fusion reactor for the armor, why not a real big fusion reactor with very high power output
talking of nuke, why not a mini-nuke for the rocket launcher very high need of resources to build 1, but using it will push that "nest" (if he survive) to attack non-stop until you kill alll spawners
extra damage to small and medium bitters, big damage to big bitters, high damage to spawners, and radiations as well (poison/pollution)