Analyst upgrades:

• PepsiCo (NYSE: PEP) was upgraded to Buy from Hold at Deutsche Bank.
• Fortress (NYSE: FIG) was upgraded at Citigroup to Hold from Sell.
• Prudential (NYSE: PUK) was lifted to Overweight from Neutral at JP Morgan.
• Keefe Bruyette upgraded Franklin Resources (NYSE: BEN) to Outperform from Market Perform and added shares to their Best Ideas List on valuation as they see an attractive risk/reward at current levels.
• UBS upgraded ASML Holding (NASDAQ: ASML) to Buy from Neutral on valuation as they believe the company remains a market leader.
• Oppenheimer raised Seattle Genetics (NASDAQ: SGEN) to Outperform from Perform on valuation following the recent weakness as they expect positive clinical news flow beginning in December.

Analyst downgrades:

• UBS downgraded U.S. Steel (NYSE: X) to Sell from Buy and lowered its target to $30 from $60 citing deteriorating U.S. conditions and concerns about the company's high fixed costs in a falling steel price environment.
• Royal Dutch Shell (NYSE: RDS.A) was downgraded to Underperform from Neutral at Credit Suisse.
  
• China Unicom (NYSE: CHU) was lowered to Underweight from Neutral at JP Morgan.

MOST NOTEWORTHY: First Solar, Pride International and EnerSys were today's noteworthy downgrades:

• Friedman Billings downgraded First Solar (NASDAQ: FSLR) to Underperform from Market Perform citing margin risk concerns, as the company aggressively pursues utility-scale projects in the US. The firm said risks are not reflected in share valuation near $300 and could be a source of disappointment but could also lead to downside EPS risk.
  
• Wachovia said Pride International (NYSE: PDE) has the least potential EPS upside vs. peers given the company has contracted the highest percentage of its floater days into 2012E. Additionally, the firm views a takeout by Seadrill as unlikely. Shares were cut to Underperform from Market Perform.
  
• Merriman downgraded shares of EnerSys (NYSE: ENS) to Neutral from Buy as they believe the strong Q4 results were driven by a one-time benefit from lead procurement mechanics and that data does not support the company's sustained margin expansion story.

OTHER DOWNGRADES:

• Citigroup lowered Intuit (NASDAQ: INTU) to Hold from Buy.
  
• UBS downgraded Nucor (NYSE: NUE) to Neutral from Buy.
  
• Smart Modular (NASDAQ: SMOD) was downgraded at Oppenheimer to Perform from Outperform.
  
• The Airlines Sector was cut by Soleil to Neutral from Outperform.

Stock screeners are tools that let investors filter through a large number of stocks according to chosen criteria. While helping investors pick stocks and narrow down options, it is important to remember that a stock screener is just a tool and every investment should be analyzed on its own merits to make sure it fits with your personal portfolio and risk characteristics. Welcome to my new weekly column that finds interesting investment opportunities with the help of our Stock Screener.

This post is a continuation of Stock Screener: Generating power with batteries and solar energy -- Part I

A quick recap: With all the talk lately about alternative energy, I wanted to see what the Power Generation & Storage industry has in store. Within the industry, I gave pretty wide criteria with the only constraints being a market capitalization of over $500 million and a profitable 2006.

The stock screener returned five companies listed here by market cap: Suntech Power Holdings Co., Ltd. (NYSE: STP), Energizer Holdings Inc. (NYSE: ENR), Trina Solar Ltd. (NYSE: TSL), EnerSys Inc. (NYSE: ENS) and Greatbatch Inc. (NYSE: GB). These could roughly be divided into two main businesses: Solar energy and batteries. Energizer, EnerSys and Greatbatch are battery manufacturers for different uses, while Suntech and Trina manufacture PV and solar cells and modules.

In Part I, I looked at the solar stocks, today, I'll look at the battery stocks: