Perhaps a bit of the shine is wearing off of solar stocks. Solar panel company ReneSola (SOL) turned in a third-quarter loss of $10.2 million, or seven cents per share, compared to earnings of 23 cents per share ($32.4 million) a year ago. Quarterly revenue fell to $141 million from $216 million a year ago. Expectations called for a loss of eight cents per share on revenue of $135.5 million.

The company stated, "We witnessed a strong rebound in customer demand for our quality products in the third quarter of 2009 and reached a corporate landmark as ReneSola achieved the highest quarterly shipments of solar products in its history." I'm not buying it. SOL saw earnings and revenue walk off a cliff when compared to a year ago ... so let's make sure that we talk about great customer demand. Of course, customer demand wasn't good enough to help you swing to a third-quarter profit.

Sunny skies are here for Ausra, the solar thermal company backed by Kleiner Perkins and Khosla Ventures. The company is looking for a buyer, and it's already talking to three, according to a report by Reuters. Everything is up for grabs, from a majority stake in the company to 100% of it, and the back-and-forth going on is at a "very aggressive level."

The businesses looking to pick up Ausra are said to be global power generation conglomerates but haven't been named yet. So, the clean energy company would be a way for one of them to diversify.

Trina Solar (NYSE: TSL), a maker of solar photovoltaic products and a colleague of Suntech Power Holdings (NYSE: STP), issued second-quarter results on Monday after the market closed. According to Reuters, Trina Solar beat market expectations.

Revenues decreased over 26% year-over-year (according to the actual press release, revenues increased over 13% on a sequential basis). Net income was 71 cents per American depositary share (ADS). Analysts were betting on 37 cents per ADS being the likely profit figure.

After the closing bell sounds this afternoon, LDK Solar (NYSE: LDK) will report quarterly earnings. Expectations are pegged at a loss of 91 cents per share for the solar firm, so what can you expect in the wake of the report? Let's take a look at LDK's technical prospects and what an earnings miss or stronger-than-expected earnings could do for the company.

First things first, LDK manufactures and sells solar wafers to other solar manufacturers, both in China (the company's home) and across the globe. The company performed well in the past, when the new global conscience had companies and individuals looking for cleaner forms of energy. Unfortunately, this little thing called a recession occurred, pulling many customers away from LDK and hurting the company on the bottom line.

The venture capital (VC) industry demonstrated its commitment to the clean technology space in the second quarter of 2009, pumping $1.2 billion into the sector, according to a report by GTM Research. VC investments in cleantech are up 43.5% from the first quarter of the year, when $836 was put into play in the cleantech space.

The number of transactions increased, as well. In the first quarter, 59 deals were completed, and deal-flow surged 44% to 85 in the quarter just finished. Average deal size remained fairly consistent: $14.2 million for the first quarter and $14.1 for the second.

We're still in the early stages of this trend, but it's pretty clear that the green energy sector is fast becoming a venture capital darling. Today, for example, five deals were announced in one publication alone (three VC, two acquisitions). The three investments account for $47.4 million in VC investment. And only yesterday, Solazyme picked up another $57 million in its Series C round.

In what remains a capital-constrained market, the cash is still flowing. In the private equity space, investments in clean technologies have remained steady from 2007 to 2008, despite broader economic calamity. Such commitment this early in the game may hint at what the next bubble will be.

"The solar sector has been notably weak, including First Solar (NASDAQ: FSLR)," says Stephen Leeb. Despite the setback, the editor of The Complete Investor rates the stock a high risk buy.

"First Solar is one of the few whose earnings outperformed consensus estimates: its fourth-quarter results reported yesterday after the market's close were nearly 25% better than estimates.

"First Solar made $1.61 per share this past quarter; Wall Street was expecting $1.30 per share. Revenues were also ahead of estimates, although the company reduced 2009 revenue estimates by about 10%, citing short-term credit concerns for customers.

Shares of First Solar (NASDAQ: FSLR) have been pummeled this week, as analysts, starting with Citigroup (NYSE: C), downgrade the stock.

Previously, the stock had enjoyed high ratings, generally in the Buy or Accumulate range. With Citi leading the way, other analysts have followed suit with rating reductions.

Citi cited concerns regarding the amount of solar panel inventory waiting to be absorbed, along with worries about future demand.

By some estimates, only 10% of the solar panels in inventory at the end of the year will be taken up by the anticipated increased demand generated from the adoption of the Obama energy proposals. An additional 20% reduction of inventories is projected to result in 2010.

The market is not distinguishing among the companies in the solar panel manufacturing business. Regardless of the strength of an individual manufacturer, all are being treated with the same lack of enthusiasm by analysts and investors. A closer look at First Solar suggests that this should not be the case.

First Solar is a leading designer and manufacturer of solar modules using thin-film semiconductor technology, which converts sunlight to electricity. Based in Phoenix, Ariz., First Solar has long-term supply contracts with 12 European project developers and systems integrators.

The solar module industry has come into recent criticism for its impact on the environment. Concerns are being raised that the eventual disposal of solar panels will result in the emission of large amounts of greenhouse gasses as the semiconductors disintegrate.

First Solar, however, has established a model for extended producer responsibility, which creates an obligation of the producer to have policies and practice to ensure that the company takes responsibility for environmental consequences from cradle to grave. The company provides the purchaser of its products with a guarantee to take back all its panels at the end of their useful life.

First Solar has received acclaim for building concern for environmental impact into all phases of the manufacturing and recycling of its products.

FSLR stock is trading around $142 per share. Shares had rallied last week to $165 per share on the heels of President-elect Obama's energy proposals. The stock had increased in price by 76% from its 52-week low, and was approaching its 12-month target price of $167.70.

The sell-off of FSLR has been greatly overdone. The company's balance sheet is strong, with a long-term debt-to-equity ratio of 0.10 and a current ratio of 3.23. The 21.84% on equity should also be of comfort to investors.

An additional plus for FSLR is the likelihood of a push to solar energy as part of the job stimulus program of the new administration.

Louis Navellier's PortfolioGrader Pro, which rates Wall Street stocks, rates FSLR a B or Buy.

Jamie Dlugosch is a contributor to NavellierGrowth.com.

The U.S. housing sector remains in deep recession. Consumer spending is down. Business investment remains lackluster, with industrial production indicators hitting new lows monthly. And lay-offs have hit alarming levels.

Against this backdrop it's understandable if one holds a not-so-optimistic view regarding the U.S. economy and the markets for early 2009: the economy's fundamentals are weak, and it's going to take a lot of stimulus, fiscal and otherwise, to turn them around.

Nevertheless, there are bright spots -- in this case literally, as well as macroeconomically -- regarding the U.S. economy of tomorrow.

This way to the future

One small, but significant data point: despite the plunge in oil prices to around $50 per barrel, demand for solar energy and solar panels remains strong. Demand for solar energy systems increased 45% in 2007 and is expected to register another impressive gain in 2008, The New York Times reported.

About 25,000-35,000 workers -- installers, manufacturers, distributors, project developers, and material suppliers -- are currently directly employed in the solar energy sector, which is expected to grow to more than 110,000 in 2016, according to Solar Energy Institute Association data, The Times reported.

And here's an equally important stat: the jobs pay between $15-30 per hour, with many solar companies offering health benefits, The Times reported.

Increasing demand for solar energy and solar products proved to be a boon for Trina Solar Ltd. (NYSE: TSL) and LDK Solar Co. Ltd. (NYSE: LDK) as both companies reported Wednesday that their earnings soared in the third quarter. Investors were not impressed, however, pushing shares lower.

Trina Solar, a maker of solar photovoltaic products, said its net income quadrupled to $32.1 million, or $1.17 per American Depository Share, from the same period of the previous year. These results included a foreign currency exchange loss of $4.9 million. Revenue more than tripled to $290.7 million.

Analysts surveyed by Thomson Reuters, on average, had expected a profit of $1.21 per share on revenue of $276.9 million.

However, the company lowered its full-year 2008 revenue estimate to range between $800 and $850 million because the company expects fewer product shipments for the year than previously forecast.

Shares of Trina Solar fell to a 52-week low of $6.81 Wednesday. The share price is 86.8% lower than a year ago.

Wind and solar, two renewable energy sources with a promising future, nevertheless face a bottleneck of sorts in the United States: the electric power grid. The existing grid can not handle the new demands, The New York Times reported Wednesday, forcing renewable wind and solar sites to shut down, even when conditions are right to generate and sell power.

An infrastructure-challenged U.S.

Economist Glen Langan says there's a theme that keeps popping up in the U.S. economy in the early 21st century: inadequate infrastructure. "We're a nation of inadequate infrastructures: the power grid, air travel/air traffic control, railways, highways... pick an infrastructure and you'll see a network that can't handle present demands, let alone an expanded national economy in 2020 or 2030," Langan said.

The power grid bottleneck is particularly frustrating and damaging because both wind and solar power generation systems are mushrooming, and could, with an adequate grid, account for more than 20% of the nation's power needs, Langan said, adding that some economic models put renewable energy's potential contribution even higher, at 25% or more.

"Imagine T. Boone Pickens building his massive, multi-billion dollar wind mill farm and having it sit idle because the grid cannot tolerate and transmit the increased power? Pretty sad," Langan said.

Rival home improvement chains Home Depot Inc. (NYSE: HD) and Lowe's Companies Inc. (NYSE: LOW) are scheduled to report quarterly results this week. Not surprisingly, given the ongoing housing slump, analysts surveyed by Thomson Financial on average expect both companies to post earnings lower than in the same period a year ago. For Home Depot, that's 61 cents per share, down 20.8%, and for Lowe's, 56 cents per share, down 16.4%. Meanwhile, cabinet maker American Woodmark Corp. (NASDAQ: AMWD), for whom Home Depot and Lowe's are major distributors, is also expected to report lower earnings: 11 cents per share, down 67.6%.

The presidential campaigns have prompted much discussion of energy policy and alternative energy sources. Some solar-energy-related concerns are scheduled to report this week, and expectations seem to be high. Trina Solar Ltd. (NYSE: TSL) is expected to report 81 cents per share earnings, up 67.9%; ReneSola Ltd. (NYSE: SOL) is expected to post earnings of 32 cents per share, up 62.5%; and Suntech Power Holdings Co. (NYSE: STP) is expected to have earnings of 32 cents per share, up 21.9%. Even China Sunergy Co. Ltd. (NASDAQ: CSUN) is expected to have swung to a profit of 3 cents per share, from a per-share loss of 14 cents a year ago.

SunPower (NASDAQ: SPWR - option chain) shares are soaring higher today after Pacific Gas and Electric Co. said it has chosen SPWR to supply up to 800 megawatts of renewable energy. On the news, an analyst at Merrill Lynch also upgraded SPWR to "Buy" from "Hold." If you think that the stock won't fall by too much in the coming months, then now could be a good time to look at a bullish hedged trade on SPWR.

SPWR opened this morning at $87.64. So far today the stock has hit a low of $87.57 and a high of $93.93. As of 12:55, SPWR is trading at $93.26, up $14.69 (18.7%). The chart for SPWR looks neutral and S&P gives SPWR a 3 STARS (out of 5) hold ranking.

For a bullish hedged play on this stock, I would consider a December bull-put credit spread below the $55 range. A bull-put credit spread is an options position that combines the purchase and sale of put options to hedge risk in case the stock doesn't do what you think, but willstill leverage nice returns. For this particular trade, we will make an 11.1% return in just four months as long as SPWR is above $55 at December expiration. Sunpower would have to fall by more than 40% before we would start to lose money. Learn more about this type of trade here.

SPWR hasn't been below $55 since March and has shown support around $71 recently. With the way the political climate is shaping up, it looks like some form of solar power should be here for quite a while.

Brent Archer is an options analyst and writer at Investors Observer.

DISCLOSURE: Mr. Archer owns and/or controls diversified portfolios of long and short stock and option positions that may include holdings in companies he writes about. At publication time, Brent neither owns nor controls positions in SPWR.

That the developing and developed world will need considerably more electricity in the decades ahead would not surprise most investors / readers.

That both economic zones can achieve this goal while adding a minimal amount of soot to the atmosphere, however, would.

And the technology that will undoubtedly serve as a key energy-generation component in emerging markets' 21st century power grid? You guessed it: nuclear power -- the power generation form that has lagged in the United States for more than 20 years, due to environmental regulations.

China, India push forward with plant plans

China and India are two emerging market nations that recognize that nuclear power is an essential part of meeting future electricity demand. Nuclear power will account for more than 5% of China's power output by 2020, Bloomberg News reported Monday. Meanwhile, India will start three nuclear reactors this year.

Economist Glen Langan said that while nuclear power is not, strictly speaking, a renewable energy, it has to be considered as part of the next-generation energy mix [along with wind and solar power] to meet the U.S.'s growing demand for electricity.

Solar energy may be the wave of energy's future, but companies such as Google (NASDAQ: GOOG) and Chevron (NYSE: CVX) may best start-ups in getting to the benefits. A number of large American companies with tremendous balance sheets are pouring money into solar energy based on the fact that it is becoming more competitive with oil.

According to Bloomberg, "Costs for the technology will fall below coal as soon as 2020, the U.S. government estimates. JPMorgan Chase & Co. and Wells Fargo & Co. invested last year in the biggest solar plant built in a generation; Chevron and Google are funding research; and Goldman Sachs is seeking land to lease as demand out-paces wind turbines and geothermal."

Given the potential size of the bonanza, the investments should not be surprising, but they could squeeze smaller solar energy companies out of the market. Firms like JA Solar (NASDAQ: JASO) and SunTech (NYSE: STP) have their entire futures bet on the success of solar energy and the fact that there are not many companies in the business, at least until now.

It has began to occur to large companies that if fossil fuels will indeed start to run low in two or three decades that the trillions of dollars in market cap currently represented in large oil company stocks will have to go somewhere.

Why not to Google?