New Green Energy products – Tidal power can generate all the power required in the UK.
At Solar, Wind and Rain, on the last friday of each month we release our monthly round up of new green energy products, green appliance reviews and the latest in renewable energy production for consumers and businesses across the globe.
Hydro electricity is making massive leaps which could see smaller island nations like the UK eventually becoming energy independent. New tidal lagoons are under construction in Swansea, Wales, part of the United Kingdom. Capable of generating an almost continuous flow of electricity as the power is generated by harnessing the rise and fall of the incoming and outgoing tide. The Severn estuary has the second highest tidal range in the world.
The tidal range can be as much as 10.5 meters, making the Severn estuary ideal for the production of renewable electricity.
How does a tidal lagoon generate electricity
This artists impression shows how a tidal lagoon generates electricity. The rising tide is held back by a man made sea wall until the difference between the water height on the outside and the water height on the inside is over 2.5 meters, At this point sluice gates are opened allowing the water outside to flow into the lagoon, as it flows the water is directed through water turbines which generate electricity. The tidal lagoon in the Severn Estuary is close to the areas of built up population which cuts down on wastage from the transmission of the electricity to the areas which require it.
The same process is repeated as the tide falls. When the water level outside the lagoon is 2.5 meter lower than the water level inside, the slice gates are opened again to allow the water to escape the lagoon. As the water exits the lagoon it passes through the electricity producing water turbines. driving the turbines and generating electricity.
Tidal electricity generation therefor provides a reliable, continuous supply of electricity. If the technology proves to be as good as it looks on paper then we can see this technology taking off and being applied in all areas with tidal ranges suitable for electricity production.
The natural features of the seabed in the Severn Estuary adds to it’s suitability as a tidal lagoon for the purposes of generating electricity.
The naturally shallow seabed means that the man-made section of seawall would be much smaller than required in sites with a deep sea bed, cutting construction costs.
The 65 million pound investment will generate enough electricity to power 100,000 homes.
It’s encouraging to see the UK government and