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#TidalEnergy

1 post1 participant0 posts today
Donald R Noble

My latest research paper on Assessing the Costs of Commercialising Tidal Energy in the UK is now online

We investigated the amount of market suppport needed for #TidalEnergy, on the premis that cost reductions with increasing deployment happen similarly to other renewabe tecnologies.

doi.org/10.3390/en17092085

MDPIAssessing the Costs of Commercialising Tidal Energy in the UKThere is a need for increased renewable energy to meet net-zero targets and decarbonise the economy. Harnessing the predictable power of the tides with tidal stream turbines can contribute to this. Tidal energy is a nascent technology with higher costs at present. However, cost reductions have been observed with an increased deployment in other renewable energy technologies that have received financial support, and it is postulated that similar will happen with tidal energy. The first tidal stream projects have been awarded market support in the UK through the Contracts for Difference (CfD) scheme, with almost 100 MW expected to be commissioned by 2028. This work uses learning rates to investigate how much investment in ongoing market support might be needed to achieve cost reductions through subsidised deployment alongside research and innovation. Using a range of informed ‘what if?’ scenarios, it shows sensitivity to key inputs. The results show that the support needed is most sensitive to the learning rate, reducing it from 15% to 12.5% or 10% doubles or more than quadruples the investment required, respectively. The support is also highly dependent on the starting cost from which learning occurs, taken as the CfD Strike Price in 2025. Varying this between 156 and 220 GBP/MWh results in total investment of GBP 6.7 and 22.3 bn, respectively. Most importantly, a balance is needed between subsidising deployment to drive down costs through learning and funding innovation to maintain a high learning rate.
#TidalPower#RenewableEnergy#MarketSupport
DoomsdaysCW

#Japan Is Building Underwater #TidalPower Plants on Ocean Currents

Innovation & Technology / By Bojan Stojkovski / June 15, 2022

"Active shipping around the Japanese islands does not allow the Japanese to deploy conventional tidal power plants, and therefore Japanese experts are now developing and testing underwater power plants immersed in water to a depth of more than 50 meters.

"Successful testing of early prototypes of such power plants leads to Japan’s plans to build extensive networks of 2-MW standard tidal turbines by 2030.

"The development of the Kairyu Tidal Ocean Power Plant was started by IHI and NEDO scientists in 2011. By 2017, the partners assembled a 100 kW unit in the form of three 20-m floats with two 11-m blades (two 50 kW generators).

"The immersion depth of 50 meters was chosen for safety reasons during #typhoons, when you will not surprise anyone with the 20th wave, although the closer to the surface, the more influential the movement of water masses.

"The most promising place for installing underwater tidal turbines near Japan is the Japan Current (#Kuroshio) area off the country’s southern and eastern coasts in the Pacific Ocean. The potential current power is estimated at #205GW.

"IHI and NEDO are planning to build a 2MW tidal power plant with 40 blades for commercial use. A distributed network of such turbines could significantly contribute to providing the islands with electrical energy.

"According to Japanese experts, this type of network could generate electricity at the price of #solar energy. At the same time, the efficiency of tidal power plants is much higher than that of solar farms.

"Thus, the installed capacity utilization factor (ICUF) for solar farms is only 15%, while for tidal power plants, it reaches 70% and approaches the ICUU of thermal power plants with 80%.

"After the accident at the #Fukushima #nuclear power plant, Japan has problems with developing a peaceful atom. Also, there are no areas for full-fledged solar energy in the country, and the #winds are not as predictable as in Europe. Tidal power plants could be the foundation in Japan around which the government will build #carbonfree energy."

renewable.news/innovation-tech

Renewable.news · Japan Is Building Underwater Tidal Power Plants on Ocean Currents - Renewable.newsJapanese experts are now developing and testing underwater tidal power plants immersed in water to a depth of more than 50 meters
#TidalEnergy#RenewablesNow#RethinkNotRestart
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