These are the updated answers to Wordbrain 2 Energy (Word Expert 3×4)
Wordbrain 2 Energy Level 1 – Heat, Wind, Coal
Wordbrain 2 Energy Level 2 – Sun, Light, Wave
Wordbrain 2 Energy Level 3 – Current, Joule
Wordbrain 2 Energy Level 4 – Nuclear, Power
Wordbrain 2 Energy Level 5 – Charcoal, Fuel

Go back to Wordbrain 2 Answers for other levels.