[ exact phrase in "" ]

[ Google-powered ]


News Home

Subscribe to RSS feed

Add NWW headlines to your site (click here)

Sign up for daily updates

Keep Wind Watch online and independent!

Selected Documents

All Documents

Research Links


Press Releases


Publications & Products

Photos & Graphics


Allied Groups

MidAmerican building tallest land-based wind turbine  

Credit:  Donnelle Eller | The Des Moines Register | November 16, 29015 | www.desmoinesregister.com ~~

MidAmerican Energy says it’s building the tallest land-based wind turbine in the nation in southern Iowa.

The Des Moines-based power company will get the added height by building the wind turbine tower from concrete instead of steel, a first for the company. The extra 100-plus feet enables the turbine to capture more wind energy, the utility said.

“Generally speaking, the higher the altitude, the greater the wind resource available,” Mike Gehringer, MidAmerican’s vice president of renewable energy.

The 2.3-megawatt concrete tower turbine at the Adams County wind farm will measure 377 feet from ground to hub, compared to 263 feet for most of the turbines in use at other MidAmerican wind farms.

With blades extended, the turbine will reach a height of 554 feet, making it about as tall as the Washington Monument.

The utility has contracted with Siemens to supply and construct its new concrete tower design

Siemens and MidAmerican see the prototype as the model for other concrete turbine towers at future wind farms. It would open up “low-to-medium wind resource areas of Iowa for future wind development,” Gehringer said.

The company said the process of building a concrete tower is quite different from the process used to construct turbines with steel towers. “Instead of building the tower sections in a factory and transporting them to the site to be fitted together, crews pour the concrete in segments and manufacture the tower onsite,” Gehringer said.

The concrete turbine is one of 64 wind turbines planned for MidAmerican’s Adams County wind farm. Construction is underway on the 154-megawatt project, and all turbines are scheduled to be erected by the end of 2015.

Siemens sourced the concrete formwork from EFCO Corp. in Des Moines and supplied the wind turbine blades for the entire Adams project from the Siemens blade factory in Fort Madison.

Source:  Donnelle Eller | The Des Moines Register | November 16, 29015 | www.desmoinesregister.com

This article is the work of the source indicated. Any opinions expressed in it are not necessarily those of National Wind Watch.

Wind Watch relies entirely
on User contributions


« Later PostNews Watch HomeEarlier Post »

Get the Facts Follow Wind Watch on Twitter

Wind Watch on Facebook


© National Wind Watch, Inc.
Use of copyrighted material adheres to Fair Use.
"Wind Watch" is a registered trademark.
Formerly at windwatch.org.

Follow Wind Watch on Twitter

Wind Watch on Facebook