Spanish-German wind giant Siemens Gamesa has started production of its first B115 blades at its facility in Aalborg, Denmark. The blades will be used on its SG 14-236 DD offshore wind turbine, which will have an output of 14 megawatts (MW) and a rotor diameter of 236 meters (774 feet).


UnderstandSolar is a free service that links you to top-rated solar installers in your region for personalized solar estimates. Tesla now offers price matching, so it’s important to shop for the best quotes. Click here to learn more and get your quotes. — *ad.


The SG 14-236 DD prototype, which will feature the new B115 blades that are 377 feet long – that’s 17 feet longer than an American football field – will be tested both on the company’s test stand in Aalborg, and also at the Østerild test center in late 2022.

The video below (and photo above) shows the blade’s mold and demonstrates the sheer scale of the turbine blades:

Siemens Gamesa manufactures the blades using its IntegralBlade technology, in which the blades are cast in one piece and made from fiberglass-reinforced epoxy resin without any glued joints. They also feature Siemens Gamesa’s RecyclableBlade technology, which is explained in the below short video:

In December 2021, Electrek reported that Siemens Gamesa’s SG 14-222 DD prototype offshore wind turbine produced and delivered its first electricity to the grid at the test center in Østerild.

The SG 14-222 features a 222-meter (728 feet) diameter rotor, 108-meter-long (354-feet-long) B108 blades that are cast in a single piece, and a swept area of 39,000 square meters (419,792 square feet). It has a capacity of up to 15 MW with Power Boost, and can provide enough energy to power around 18,000 households annually. The SG 14-222’s serial production is planned for 2024.

The purpose of increasing the rotor diameter of a wind turbine is so it can deliver more annual energy production.

Read more: Vestas takes GE’s ‘world’s largest offshore wind turbine’ title

Photo: Siemens Gamesa

FTC: We use income earning auto affiliate links. More.


Subscribe to Electrek on YouTube for exclusive videos and subscribe to the podcast.

Stay up to date with the latest content by subscribing to Electrek on Google News. You’re reading Electrek— experts who break news about Tesla, electric vehicles, and green energy, day after day. Be sure to check out our homepage for all the latest news, and follow Electrek on Twitter, Facebook, and LinkedIn to stay in the loop. Don’t know where to start? Check out our YouTube channel for the latest reviews.

About the Author

Michelle Lewis

Michelle Lewis is a writer and editor on Electrek and an editor on DroneDJ, 9to5Mac, and 9to5Google. She lives in White River Junction, Vermont. She has previously worked for Fast Company, the Guardian, News Deeply, Time, and others. Message Michelle on Twitter or at michelle@9to5mac.com. Check out her personal blog.