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This morning I awoke to a comment from Seeking Alpha contributor Michael Eisenberg who asked me to lay out my core thesis on why Active Power, Inc. (ACPW) merits attention from investors who are interested in the energy storage sector. While Altenergystocks and Seeking Alpha don't generally like to publish articles about companies that trade for under a dollar, I believe Active Power merits an exception to the general policies.

As regular readers know, I've been a small company securities lawyer for almost 30 years and immersed in the energy storage sector since early 2004. During my career I've had many clients in diverse industries succeed and fail. While their businesses have all been quite different, they invariably go through the same stages of initial excitement over a novel idea, disenchantment as the business model proves difficult and costly to implement, and sustained growth when diligent pursuit of the business model begins to bear fruit. In many ways the life cycle of a small company is like a marriage that begins with an overly optimistic honeymoon, gets rocky for a period of years as the reality of paychecks and budgets sinks in, and then strengthens over time to become something valuable and enduring.

My favorite example of a typical small company growth cycle is J2 Global Communications (JCOM), a company that I got to know first as a customer and then as a stockholder. J2 went public in July 1999 at an IPO price of $9.50 per share (market capitalization $312 million) and its stock price immediately began a gradual downhill slide to a low in the $0.30 range (market capitalization $16 million). While the market obviously hated the stock, I loved the service, believed J2 had a bright future and bought its stock in the $0.50 range. After living through the indignity of a reverse split, J2's stock price recovered nicely and I ended up selling for a triple in late 2002, which proved to be dreadfully premature. The full trading history of J2 is summarized in the following graph.

I began researching Active Power last fall because they manufacture and sell uninterruptible power supplies based on a flywheel technology that's similar to what Beacon Power (BCON) is developing for grid-based applications. While Active Power's focus is data centers and other facilities that need extraordinary power quality and reliability, its solutions should be easy to scale up as demand for grid-based systems develops.
When I first began comparing the two companies, Beacon was sporting a market capitalization of $80 million and Active Power was limping along with a market capitalization of just $24 million. When it came to business fundamentals, however, Active Power had a comparable product, comparable stockholders equity, smaller operating losses and a far more impressive business history. That led me to the inescapable conclusion that Active Power had attractive upside potential while Beacon had worrisome downside risk.

Active Power went public in August 2000 in an IPO price of $17 per share (market capitalization $640 million) and after an initial run-up; its stock price began to tank. The price ultimately decayed to the point that even after a reverse split it traded as low as $0.22 per share last winter. The full trading history of Active Power is summarized in the following chart.

While Active Power's stock price chart tells a tale of unmitigated disaster, the selected financial data from its last Form 10-K tells an entirely different story; a story of sustained growth, improving margins and declining losses (click on figure for a larger view). In other words a management team that’s had the courage to stay the course even when times got tough is successfully implementing their business plan.

During the first six months of 2009, Active Power booked a 24% year on year sales growth and improved its gross profit margin from 12% to 26%. In my view these are solid performance metrics for a small company in recessionary times.

I bought Active Power in the fourth quarter of last year at $0.26 per share because I saw the same long-term pattern developing that I experienced with J2. So far the investment has been very good for me and its market value has increased by 185% in eight months. Since I believe Active Power is turning an important corner in its business development and I'm convinced that overall growth in the energy storage sector will be spectacular for decades, I won't be anywhere near as quick on the trigger as I was with J2. I may even buy a little more.

DISCLOSURE: The Author is long Active Power

Source: Why I Am Long Active Power