Question

List any four limitations of the energy obtained from oceans.

Answer 1

Limitations of the energy obtained from oceans

High maintenance cost

1. The power plant's machinery and turbine blades are exposed to the salty water of the ocean, which causes corrosion.

Limited site

1. The ocean thermal energy can be harnessed where the temperature difference between water at the surface and water at a depth of up to 2 km is $20°C$ or more.
2. The rise and fall of the water must be sufficient to generate electricity for tidal energy to work..

Huge investment

1. The equipment and technologies required to harness ocean energy are expensive.

Power generation is low

1. The harnessing of power from the ocean is low.
2. The power harnessing from the ocean is not constant.