so i have been thinking about the tardis and i think the tardis should have a energy bar when flying,cords or to different dimensions and to charge it up u can land and it will recharge slowly or make a 9x9 multi-block and it will charge faster but the 9x9  multi-block should charge very fast id the tardis is on Gallifrey but if you do not charge the tardis it can not go anywhere or catch fire

i think you should have unlimited energy :/

The Zeiton ore in the mod is planned to be a sort of fuel in the future. As for other types of energy (ie: Artron, Huon) they've been suggested as well. I recommend putting more details in the suggestion