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Top Clean-Tech Employers

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Photo Credit: Suntech Power

Green jobs have become a hot topic this year, but it's not always clear what exactly that means. Here's one measure. Research firm Clean Edgehas determined the ten publicly traded, clean-tech companies with the most employees. (The data are based on second quarter 2009 financial filings or the most recent annual report.)

Most of the companies are based out of the U.S. but have a presence in the country. Click on to see which companies ranked on top.

Posted Nov. 4, 2009

10. SunPower

Photo Credit: SunPower

Headquarters: San Jose, Calif.

Employees: 5,400

SunPower’s high-efficiency solar panels grace the roofs of homes and businesses around the world .

9. Kingspan Group

Photo Credit: Kingspan Group

Headquarters: Kingscourt, Ireland

Employees: 5,500

Kingspan manufactures materials used in making more energy efficient buildings.

8. Gamesa

Photo Credit: Gamesa

Headquarters: Victoria, Spain

Employees: 7,200

With wind turbine manufacturing facilities in Europe, China and the U.S., Gamesa installed the equivalent of 16,000 megawatts of wind power in 2008.

7. Baldor Electric

Photo Credit: Baldor Electric

Headquarters: Fort Smith, Ark.

Employees: 7,800

Among other things, Arkansas-based Baldor Electric manufactures energy efficient electric motors.

6. China BAK Battery

Photo Credit: China BAK Battery

Headquarters: Shenzhen, China

Employees: 8,200

China BAK manufactures lithium-based battery cells that are used in rechargeable batteries for products like cell phones and laptops.

5. Itron

Photo Credit: Itron

Headquarters: Liberty Lake, Wash.

Employees: 8, 700

The company makes smart electricity, gas, water and heat meters that deliver and monitor energy and water use more efficiently.

4. Suntech Power

Photo Credit: Suntech

Headquarters: Wuxi, China

Employees: 9,000

The solar module producer has offices in China, Switzerland and in San Francisco.

3. Nalco

Headquarters: Naperville, Ill.

Employees: 11,700

Nalco is a water treatment and process improvement company that helps its customers reduce water use.

2. LDK Solar

Photo Credit: AP

Headquarters: Xinyu, China

Employees: 14,100

The Chinese company makes multicrystalline solar—a component used to make solar cells—which it sells to solar module and cell manufacturers. The company has an office in Sunnyvale, Calif.

1. Vestas Wind Systems

Headquarters: Randers, Denmark

Employees: 21,100

The Denmark-based wind turbine manufacturer also has facilities in Texas, Colorado and Oregon.