Tidal energy is a great source of clean renewable energy, but most of us don’t know about how it works? Every day, the tide moves a huge amount of water twice, and harnessing it could provide a great deal of energy, which can make up around 20% of Britain’s needs.

The energy generated through this process is reliable and plentiful, but converting it into useful electrical power is not easy. Some time back, “tidal power” meant “tidal barrage”,but nowadays there are other options as well.

The working of a tidal barrage is similar to a hydro-electric scheme, except that the dam is much bigger. A huge dam called a “barrage”, is built across a river estuary. When the tide goes in and out, the water flows through tunnels in the dam.