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As a renewable-energy junkie, I'm always looking for a way to profit from the transition to renewable energy and the updated grid infrastructure that will lead the way. There's one company that will let you profit from both sides of this industry: American Superconductor (Nasdaq: AMSC  ) .

This manufacturer of superconductor wire and electronics has transitioned to be a big power in wind since purchasing Windtec in 2007. And it was a timely purchase, since Windtec has been the driver behind American Superconductor's growth over the past few years while the superconductor business has floundered. The power-systems business grew revenues at 34.3% last quarter alone and accounted for all the company's growth.

Wind growth continues
The wind business is American Superconductor's foundation right now. Chinese manufacturers looking to get into wind turbines are using American technology to help assist production so they don't have to develop the technology themselves. For example, A-Power Energy Generation Systems (Nasdaq: APWR  ) has big wind plans and is getting an assist from General Electric (NYSE: GE  ) to build gearboxes. AMSC Windtec is doing the same thing by providing technology and equipment to eight new companies that should start volume production between now and mid-2011.

What's next?
But there are a number of new products to get excited about. I'm looking forward to seeing the SeaTitan wind turbine, which AMSC says will "dominate the offshore wind market." That's a bold statement for a company competing with wind powerhouses such as GE and Siemens (NYSE: SI  ) , but I can't count AMSC out.

AMSC also recently purchased a 25% stake in Blade Dynamics, a producer of advanced wind-turbine blades. AMSC's customers will have first access to the blade designs.

On the solar front, last week AMSC announced its SolarTie Grid Interconnection Solution, a power inverter built specifically for the solar market. AMSC expects solar PV inverters to quadruple from 2009 to 2014, up to 32 GW.

Supercharged growth
My original concern looking at AMSC more than a year ago was its valuation. At the time, the company wasn't making a profit and sales had shown only one quarter of growth. But since then, the story has changed dramatically. AMSC's one-year revenue growth stands at 72.9% and earnings bounced to $0.20 last quarter from $0.04 a year earlier. This quarter, analysts are expecting earnings to more than double from the prior year to $0.23 per share.

With the price-to-earnings ratio approaching 35 for estimated 2010 earnings, AMSC isn't cheap. But it's also not unreasonable for a company showing explosive growth. In a growth stock, I look for a company to consistently beat earnings estimates, showing me that analysts can't keep up with the growth story. To that end, AMSC has surprised to the upside by an average of 29.6% over the past four quarters. This quarter, I expect another upside shock to give this supercharged stock a boost.

Want to read more about American Superconductor? Add it to My Watchlist, which will find all of our Foolish analysis on this stock.

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Fool contributor Travis Hoium has no position in any company mentioned here. You can follow Travis on Twitter at @FlushDrawFool, check out his personal stock holdings, or follow his CAPS picks at TMFFlushDraw.

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Read/Post Comments (3) | Recommend This Article (10)

Comments from our Foolish Readers

Help us keep this a respectfully Foolish area! This is a place for our readers to discuss, debate, and learn more about the Foolish investing topic you read about above. Help us keep it clean and safe. If you believe a comment is abusive or otherwise violates our Fool's Rules, please report it via the Report this Comment Report this Comment icon found on every comment.

  • Report this Comment On October 24, 2010, at 5:02 PM, ruukie wrote:

    I'm getting sick and tired of these MarketSmith ads popping up. Cut it out. It's annoying.

  • Report this Comment On October 25, 2010, at 11:17 PM, CoachBen wrote:

    how is AMSC going to be affected by the government subsidies running out at the end of the year?

  • Report this Comment On October 26, 2010, at 2:13 PM, TMFFlushDraw wrote:


    I assume you're asking about US subsidies? Most of their product is sold in China so.... not much effect.

    Travis Hoium (TMFFlushDraw)

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