A way to get energy for your ship in emergencies could be sapping the energy from a stars fusion cycle. If your ship had a strong enough hull it could approach and shoot the star with a special laser like weapon that would attach to the star and effectively destroy the star while getting tons of energy. But if you sap to much of the star it could go supernova and completely and flat out kill you. Depending on the size will change the amount of energy gained and amount of time you have before it goes supernova. Also the size will also change the number of planets that would be damaged or completely destroyed. Say if your ship had some extra energy storage but didn't need to use the energy. The extra could be used to charge batteries needed on land based machines.
Quite extreme, isn't it? Cool idea, but such amount of energy would be needed only to EPIC levels of technological effort, such as... i don't know... facing a planet-sized monster? I approve, in the condition of having stuff that needs it.
He he yeah I guess that's true but it wouldn't be sucking all of it immediately just sucking some depends on the level of laser at the time.