Excuse me, can the power motor only be used in the creative mode now? In other words, there are only wind power, fire power and water power in the survival mode. Will consideration be given to restarting the synthesis of the power motor in the survival mode in the future?

From what I heard no. But you can use data packs and crafttweaker to add your own recipes. See the recipe submissions channel on the discord server for example data packs.