There are plenty of ways to earn energy:
  1. Rest in the hammock once every 3 hours. (It can be unlocked by completing missions on your Home Island.)
  2. Complete missions.
  3. Eat at the bungalow on your Home Island once every 2–6 hours, depending on the meal.
  4. Make an offering at the altar once every 4 hours.
  5. Set up the smoothie bar on your farm and make invigorating drinks.
  6. Feed Chip the Chipmunk while you travel, and he will sometimes give you energy.
  7. Open energy chests hidden throughout the game world.
  8. Get it from chests received for filling orders on the board. (Chests are awarded when the meter at the bottom of the board fills up and when you complete particularly difficult orders.)
  9. Increase your level.
  10. Collect seashells, sea stars, and energetic crabs.
  11. Feed the lemur on the Island of Toru Kai (available after building the lemur’s house).
  12. Unlock new achievements.
  13. Win it in the butterfly-catching mini-game.
  14. Purchase it with diamonds by tapping the + button next to your energy bar at the top of the screen.
  15. Purchase bundles containing energy in the Shop.
  16. Open gifts attached to in-game news.