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The Alimak hoists were chosen to support the project

because of their proven reliability to operate in harsh en-

vironments, removing some of the risk that Bechtel had to

manage to install and start up this new technology.

World’s largest solar power facility

Ivanpah Solar Power Facility is the world’s largest so-

lar thermal power plant currently in operation.

The project is located in Ivanpah Dry Lake, California on

more than 1,600 hectare (4,000 acres).

The power will be created by using over 173,500 soft-

ware controlled heliostats (mirrors) that will track the sun

in two dimensions and reflect sunlight to the three boilers

that sit atop the almost 140 m (450’) tall towers.

The high temperature steam will then be piped from

the boilers to a turbine were electricity is generated.

NRG Energy, Inc. through its wholly owned subsidi-

ary NRG Solar, LLC, announced earlier this year that the

Ivanpah Solar Electric Generating System is now operation-

al and delivering solar electricity to California customers.

At full capacity, the facility’s trio of 450-foot (137 m)

high towers produces a gross total of 392 megawatts (MW)

of solar power.

The scheme is a joint effort between NRG, Google, and

BrightSource Energy. Bechtel is the engineering, procure-

ment, and construction contractor on the project. The

project received a $1.6 billion loan guarantee from the US

Department of Energy’s Loan Programs Office.

Ivanpah, which accounts for nearly 30 percent of all so-

lar thermal energy currently operational in the US, is the

largest solar project of its kind in the world.

The project is the first to use BrightSource’s innovative

solar power tower technology to produce electricity. It in-

cludes heliostats that follow the sun’s trajectory, solar field

integration software and a solar receiver steam generator.

Since breaking ground in October 2010, the project has

created thousands of jobs and, at the peak of construction,

employed nearly 3,000 site workers who completed more

than 8.35 million man-hours.

Bechtel built and procured Ivanpah’s solar field, which

includes 173,500 heliostats that follow the sun’s trajectory,

solar-field-integration software, and a solar-receiver steam

generator. The team exceeded its goal of installing 500 he-

liostats per day and achieved more than 800 heliostat in-

stallations per day at peak construction.

Bechtel designed, procured, and built the project’s trio

of 450-foot high power towers and successfully placed

2,200-ton boilers on top of each tower. In addition, the

team executed the project safely, working 31 months and

7.3 million hours without a lost-time accident.

Bechtel •Alimk Hek

The three towers ready

to be commissioed

Photo: DiverDave

Video showing

preparation and

construction works.

Source: Bechtel Corp:

© 2014 Bechtel

Page 14

Contractors World International Vol 5 No 5