r/RenewableEnergy • u/DVMirchev • 7d ago

“A weapon for deep sea wind power:” Goldwind rolls out first 22MW offshore turbine

https://reneweconomy.com.au/a-weapon-for-deep-sea-wind-power-goldwind-rolls-first-22mw-offshore-turbine/
211 Upvotes

99% Upvoted

27 comments sorted by

43

u/DVMirchev 7d ago

Just 15-20 years ago, a 15 MW wind generator was unthinkable.

Folks saying it's possible were told to stop using the good stuff.

14

u/ph4ge_ 7d ago

Expect to see 30MW this decade.

8

u/Movykappa 6d ago

Problem is not developing such turbines, it's installing and maintaining them. There's no ships today that can install one of these offshore.

3

u/davehouforyang 6d ago

Also at 30MW tip speed will be a real issue. Could be well above 100m/s, so noisy

7

u/Movykappa 6d ago

I don't get your comment. Tip speed is controlled and dependent on angular speed, which is lower when turbine gets bigger. So that's not an issue at all

6

u/davehouforyang 6d ago

Fair critique. Tip speed is not directly controlled by rotor diameter but it generally increases with it: https://www.wind-energy-the-facts.org/tip-speed-trends.html

5

u/Movykappa 6d ago

thanks for the chart. still see that it's more of an issue of control; you can limit your tip speed.

1

u/Smaxter84 3d ago

Tbf I can't control my tip speed once it gets going lol

1

u/Aggravating-Dig2022 5d ago

So we know what the issues are! That’s half the battle! Now we solve the issues…as is tradition

2

u/iqisoverrated 6d ago

There is a limit to where the size makes sense, because at some point a singular wind turbine will be a significant chunk of your wind park output. If one goes offline you have a problem. With more smaller ones you can calculate for an average percentage of turbines out of service.

Since you bid for e.g. the production of the next day it can get very expensive if you didn't foresee one of your big generators going offline.

4

u/ph4ge_ 6d ago

There is a limit to where the size makes sense, because at some point a singular wind turbine will be a significant chunk of your wind park output

Even a 50MW wind turbine, which I've been told is the theoretical maximum given current technology, is still tiny compared to traditional power plants. It will always have the advantages of decentralisation.

Since you bid for e.g. the production of the next day it can get very expensive if you didn't foresee one of your big generators going offline.

Sure, but it has not nearly the same impact as your 1600MW nuclear plant going offline unexpectedly.

4

u/thnk_more 6d ago

I remember when 5MW was a big deal and 10 was crazy.

29

u/dontpet 7d ago

Designed specifically for deep-sea areas of between 50 to 70 metres, such as those off Guangdong, the 22MW turbine features a rotor diameter of 300 metres and blades measuring 147 metres with a wind-swept area of 70,000 square metres.

Wow. China is really kicking butt with these larger turbines recently.

20

u/DVMirchev 7d ago

Not only China.

https://www.offshorewind.biz/2024/12/10/siemens-gamesa-to-soon-install-21-mw-offshore-wind-turbine-prototype-at-danish-test-site-reports/

17

u/IdentifyAsDude 7d ago

"Highly Innovative Prototype of the most Powerful Offshore Wind turbine generator (HIPPOW)."

Lol what a name

7

u/RoninXiC 7d ago

10/10 Name

3

u/dontpet 7d ago

Oh. Very nice.

4

u/News8000 7d ago

Their latest world's largest wind turbine just flew apart on them.

1

u/dontpet 6d ago

Oh? Have you a source for that?

5

u/News8000 6d ago

It was during testing, they went above and beyond design limits and a blade tore apart. So now with design upgrades they can make them better and bigger, I guess!

2

u/dontpet 6d ago

Cool. I wonder when we'll see the growth flatten out. This op says it's 7 to 10 percent less expensive per kWh, which is fantastic.

4

u/mn25dNx77B 7d ago edited 7d ago

Wow incredible. One turbine 6,292 homes

3

u/mschiebold 6d ago

Cool!

Similarly, Perovskite solar panels are coming to mass market soon.

2

u/Genoss01 5d ago

Weapon is a strange choice of words

1

u/30yearCurse 5d ago

so are "prop style" turbines the best? What about the verticals are they less noisy and can they generate the same power?

1

u/NapsInNaples 4d ago

No they generally can’t.

1

u/Rhannmah 4d ago

Power is generally in direct relation to the amount of area a wind turbine's blades sweep. So the bigger the better, and it's easier to make big "prop style" turbines than other types.