Both are renewable. Both are nonrenewable. Wave energy is nonrenewable. Tidal energy is renewable. Wave energy is renewable. Tidal energy is nonrenewable.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Wave energy from the ocean can be harnessed to power generators to make electricity. Energy from ocean tides can also be used to make electricity. How would you categorize these two sources of energy?
Possibilities:
- Both are renewable.
- Both are nonrenewable.
- Wave energy is nonrenewable. Tidal energy is renewable.
- Wave energy is renewable. Tidal energy is nonrenewable.

Both are renewable.