Ocean Energy
Ocean energy possess massive potential as around 70% of the earth’s surface is covered with water. This is the reason that energy produced by this source of energy can be used on much wider scale than any other source of energy. Ocean energy can be harnessed in 3 ways: Tidal energy, Wave energy and Ocean thermal energy conversion (OTEC). Tidal energy generators uses the rise and fall of tides to convert the kinetic energy of the tides to electrical energy. Tidal energy is considered as renewable source of energy as tides are produced constantly on sea shores and can be used to produce electricity on a large scale. Secondly, they are more predictable than wave energy.
Wave energy, on the other hand, is produced from the waves that are produced in the oceans. Waves are nothing but constant disturbances produced on the surface of water. Wave energy, like tidal energy, is completely renewable, widely available, environment friendly and cause no damage to land. But the downside of using wave energy is that may affect marine ecosystem, suitable to certain locations, highly dependent on wavelength and source of disturbance to private and commercial vessels.
Biomass Energy
Biomass energy is the alternate energy that is contained within plants and animals. Chlorophyll present in the plants absorbs carbon dioxide from atmosphere and water from the ground through the process of photosynthesis. The energy absorbed by plants is passed to animals when they eat them. Biomass energy is considered to be renewable as the same energy is released back in the atmosphere when dead plants and animals are burnt. This way we can grow more plants and create more biomass energy. Biomass energy also include organic matter of all kinds- plants, animals and waste products from organic sources.