By getting a power source, you could use sollar pannels but they dont work in deep areas or caves next the thermal reactor, the thermal reactor genates electricity from plain heat and finally the bioreactor and nuclear reactor, the bioreactor is where you put organic stuff in it and it generates electricity and the nuclear reator is where you put nuclear rods in it for it to work but the nuclear rods are expensive put they last a really long time (typicly,depending on your power usage)