Tidal energy turbine company is showing good results

Tidal energy turbine company is showing good results
Credit: Scotrenewables

Scotrenewables Tidal Power, a Scottish engineering company, is focused on an energy source they call "tidal energy generation." A video promoting their solution: They have plenty to show for their efforts, namely, the world's most powerful operational tidal turbine, the SR2000 2MW.

A reduction in manufacturing and installation costs plus simple, quick and low cost maintenance strategies will be key to success.

The company release said, "Scotrenewables Tidal Power has set another record with its first 2MW floating tidal stream turbine with the unit clocking up over 3GWh of renewable electricity in its first year of testing at the European Marine Energy Centre (EMEC) in Orkney, Scotland."

Their equipment and operating environment carry advantages of ease of maintenance and low cost; that is their claim to fame because that is the critical challenge facing any engineer who wants to make a difference in tidal technologies.

The assembly is onshore—no offshore heavy lifting—in a safe, controlled environment.

Scotrenewables CEO Andrew Scott was quoted by the Institution of Mechanical Engineers.

"Despite being an R&D project, and it being our first full-scale turbine, its first year of testing has delivered a performance level approaching that of widely deployed mature renewable technologies." He added: "The ability to easily access the SR2000 for routine maintenance has been a significant factor in our ability to generate electricity at such levels over the past 12 months, including over winter. In addition, accessing the SR2000 using rigid inflatable boats and other similar types of low-cost vessel means that our operating costs and outage times are kept to a minimum."

It looks like a boat on the waters, and it moves like a boat before "laying a flexible mooring and harnessing tidal energy, clocked over 3GWh of renewable in its first year of testing at the European Marine Energy Centre in Orkney, Scotland."

"Older prototypes involved machines - similar to wind turbines - being fixed to the seabed. However, the SR2000 more closely resembles a boat with the rotors hanging from a device which floats on the surface," said a report from the BBC. The latest full-scale prototype, at 63m, it added, has proved the most successful.

The report quoted Andrew Scott, chief executive officer of Scotrenewables Tidal Power: "For one, we've had continual generation or testing for a year. That's fairly unique in this sector.

He talked about how they generated over 3 GWh into the Scottish grid. "That's more than three times any prototype system that's come before us and, in fact, cumulatively that's more power generated in 12 months from this single turbine than the entire wave and sector has done in Scotland in the 12 years preceding the launch of this turbine."

BBC Scotland's environment correspondent, Kevin Keane, said, "because it is still in its infancy, the power is still expensive to produce compared with wind."

In 12 months of continuous operation, the SR2000 tidal stream supplied the equivalent annual electricity demand of around 830 UK households.


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More information: www.scotrenewables.com/news

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Aug 25, 2018
Tides are there forever. Use them to charge Batteries.

Aug 25, 2018
Interesting simplicity. But the pics and video with this article don't show the business end of the device, all we see is a long Yellow Submarine on the surface. Here's a somewhat better illustration of the rotor configuration.
http://www.scotre...t/sr2000 with specifications.

Aug 25, 2018
Evening News 8/25/2218: The Borg Leader addressed the World Communist Party Assembly today about the growing unrest among humans over Global Slowing. Global Slowing is the gradual slowing of the earth's rotation, resulting in the lengthening of the day. The rate of this slowing is said to be increasing, and already greater than at anytime in history. Scientists say it is the result of restrictions on tidal flow engineered by our society to harvest energy. Some, especially in the energy industry dispute these claims saying "they are just natural fluctuations". In other news, ITER released a statement today claiming that last weeks break through meant that clean, affordable fusion based energy was only a few decades away.

Aug 26, 2018
I'm a bit confused...how does it keep station if it's not anchored and also how does it transfer power to shore?

The website doesn't really give muchinformation on this.

Aug 26, 2018
"... Global Slowing is the gradual slowing of the earth's rotation, resulting in the lengthening of the day [...] result of restrictions on tidal flow engineered by our society to harvest energy. ..."


The tides are not related to rotation of the earth, but rotation of the moon instead. The moon is losing its momentum and moving further away from the earth because of the tides. Putting devices to hinder the movement of water would actually slow down the rate at which moon is escaping earth's grip. I know it sounds counter-intuitive at first, requires understanding moon's orbit as well as tidal motion and how they relate to each other.

Aug 26, 2018
Renewables produce more ecological impacts than they produce energy.
"...the power is still expensive to produce compared with wind."
Wind/solar is cheap but "batteries not included" neither coal/gas-fired backup plants nor integration costs.
"Wind and solar coupled with storage is just too expensive!"
"The EROI of solar panels / wind turbines is already relatively low. If you add storage batteries the EROI drops even further. Plus, at high enough penetrations, grid batteries are anything but environmentally friendly."
"To the nearest whole number, the UK's wind fleet is currently producing zero gigawatts and zero percent of demand." - Aug 20, 2018
https://pbs.twimg...886f.jpg

Aug 27, 2018
"Renewables produce more ecological impacts than they produce energy."

Now THAT is a metric I'd like you to try and show. Your statement doesn't even make any kind of logical sense (as usual).

"Wind/solar is cheap but "batteries not included" neither coal/gas-fired backup plants nor integration costs."

Coal/gas have
- "cost for climate change damage mitigation"
- "cost for military to secure sources"
- "cost for impact on population health"
- "cost for damage to wildlife"
not included

You get one guess which is cheaper: Batteries or all THAT

Aug 27, 2018
Intermittent renewables are not alternative to coal/gas, they just provide them with "greenwashing".
wind/solar = 20% wind/solar + 80% coal/gas
"If you promote solar panels / wind turbines, you are wittingly or unwittingly promoting coal / natural gas power plants."
"An astonishing amount of energy (coal) is required to make solar panels. And when they are scrap after 25 years they will leave an equally astonishing amount of toxic waste."
https://www.youtu...RNupPmNI

- "cost for climate change damage mitigation":
A trillion of watts, a terawatt(1000 gigawatts), has been reached globally of installed-capacity of intermittent renewables(bird-choppers/landscape-destroyers) at cost of trillions of dollars and huge ecological impacts with almost nothing to show in terms of reducing emissions. Carbon-free nuclear has done much more with much less money, in much less time and with much less damage to wildlife, e.g. France, Sweden, Ontario.

Aug 27, 2018
"If you promote solar panels / wind turbines, you are wittingly or unwittingly promoting coal / natural gas power plants."

Nope. There's such a thing as meteorology. Wind and sun are very predictable. If (bio)gas powerplants must run for a few days a year as backup - so be it. But there's absolutely no reason why this stuff has to run all the time.
With battery technology plummeting in price even those will go the way of the dodo.

"(bird-choppers/landscape-destroyers)"
You know full well that even nuclear powerplants destroy orders of magnitude more in terms of land and birds (Coal powerplants? Oil and gas? Jeez. You ever seen an oil field? ...and we're not even talking about Chernobyl/Fukushima/Oil spills/gas tank explosions/... )

"Carbon-free nuclear has done much more with much less money, in much less time"

Riiiiight. Hint: No it hasn't

Aug 27, 2018
"Wind and sun are very predictable" they stop producing energy at night or on cloudy/snowy/not-windy days. Coal/gas-fired backup plants must be on all the time to compensate intermittencies/oscillations on the grid.

"If you think we are closing the carbon gap with renewables - you need to think again"
"The global carbon gap between fossil fuels and non-hydro renewables is not declining; moreover, global carbon emissions are increasing;"
https://davidgatt...bon-gap/

"Wind plants reach a sound pressure level of 90-100 decibels, with scientific studies suggesting that exposure to such a level of noise will lead to annoyance, sleep disturbances, headaches, anxiety, depression and cognitive dysfunction."
"Is Renewable Energy As Clean As We Think?"-Aug 23, 2018
https://oilprice....ink.html

bird-choppers:
https://pbs.twimg...7Eql.jpg

Aug 28, 2018
"Coal/gas-fired backup plants must be on all the time to compensate intermittencies/oscillations on the grid."

That's just a myth. Intermittency doesn't mean here one second gone the next. This is well in the range of minutes to hours so that (bio)gas powerplants can completely spool down/spool up. particularly if you're in a big grid (which basically every developed nation is).

"Wind plants reach a sound pressure level of 90-100 decibels, with scientific studies suggesting that exposure to such a level of noise will lead to annoyance, sleep disturbances, headaches, anxiety, depression and cognitive dysfunction."

That's a nocebo effect. And windfarms are located ways away from where anyone lives (Hint: airports are far, FAR louder than windfarms)

Off shore? Nobody cares.

As for the birdchoppers: Here's some actual numbers.
https://thinkprog...a939bbb/

You lose Willie. You always do.

Aug 28, 2018
"Coal/gas-fired backup plants must be on all the time..."
A clear example is Energiewende in Germany: even with almost a hundred of gigawatts of installed-capacity of intermittent renewables, at cost of hundreds of billions of euros and huge ecological impacts, they will have to replace coal by natural gas(methane(CH₄): 70x worse than CO₂) to fake wind/solar are reducing CO₂ emissions.
"As for the birdchoppers: Here's some actual numbers."
The Sovacool's study was already debunked: mining activities biasedly accounted as if mineral resources were not necessary for renewables.
"...does not even involve a uranium mine, it is an old abandoned copper mine in Montana."
"...wind power kills lots of birds and bats, by factors of ten more than nuclear power."
"...wind kills 20 times more flying vertebrates than nuclear."
http://atomicinsi...an-wind/
http://biodiversi...han.html

Aug 30, 2018
a_p: "There's such a thing as meteorology. Wind and sun are very predictable."
And tides are EXTREMELY predictable. :)

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