There is a lot of ways to get energy, but to get most of your energy cost energy and is very time consuming. Let alone doesn't let you get much done due to it takes a lot of energy just to get any tasks done or even to clear a area or get items to build. Now to earn money good luck mostly goes into repairs for the animals. So the time you send deliveries to get the money it is gone on crops and animal repairs. This is just another game to trick you into paying for energy to just lose it. BS