Showing posts with label Miasole. Show all posts
Showing posts with label Miasole. Show all posts

Wednesday, July 30, 2008

Daybreak

Don't blink.
This is it.

By then end of this year, solar is going to cross into the mainstream.

This has all happened before. Remember a time when desks were bereft of computers, and when magazines carried no computer ads? Now the sight of a personal computer is more ubiquitous than the Coca-Cola logo.

This is your last chance to view the world as it once was, pre-solar. Go and get the current Architectural Digest and note that it doesn't yet burst with solar ads. Take a walk around your neighborhood and see that there are no rooftop solar panels, just like there were once no dish antennas. Watch an evening of television and record for posterity that not a single solar ad rolls past. (Although in late night basic cable, it may already be too late.)

Sharp Solar is now launching a rich television campaign that will likely signal others to follow.





But that's not all. Between now and the end of the year, we'll see both Presidential candidates climbing over each other to claim leadership in this most promising and least controversial of all solutions to our biggest problem of energy. Crowds of people inside and outside of both of the upcoming conventions will be wearing "Solar Voter"(tm) tee shirts. By the end of the year, major new Thin Film (a-Si, CIGS) companies will be launching into production. The economic recovery will be led in the media by newly minted solar giants.
The secret of solar will be revealed for all time.


Someday you'll tell your grandkids about was like, before solar.

"Wait a minute. I don't get it. You say that when the Sun was shining the hottest, you actually turned the air conditioning down?"

Do laugh right along with them. It is rather silly.

Monday, April 2, 2007

Gold from the Blue Sky(tm)

Today's solar boom has been developing slowly and methodically over the past three decades. Many individuals and companies have been quietly preparing for the commercial acceptance that is finally at hand. These wise men are crafting their dreams into reality.

Unfortunately, the kind of transition to acceptance they envisioned will never come. What will come is something completely different.

The Lesson
Imagine that, in 1847, the US Government decided to populate California. Their sensible heads would have suggested a careful plan involving the preplacement of law enforcement, schools and local government services. Along with that, they might have put in place plans to insure the suitable housing and churches were waiting the new settlers. Doctors, engineers, lawyers and teachers would be encouraged to make the trip. The increased flow of settlers could have been optimistically estimated to be a healthy, sustainable few hundreds per year. All very sensible and reasonable.

But those plans, if laid, were superseded when the prospect of gold entered the equation. Tales of instant wealth and rivers flowing with gold spread across the world, inspiring tens of thousands from every walk of life to abandon normal lives and productive work. They crossed the oceans and crossed the continent knowing that all of their party might not survive the trip. They arrived at boom towns ill suited to feed and clothe the would-be miners, let alone protect any resulting property. But still they came. Over four years, a hundred thousand gold-seekers found their way against all odds (and all economic sense) to seek gold.

Gold Fever is a primitive and irresistible force. People will do wild and unlikely things that sensible heads would never predict to find "gold". Laws laid down beforehand may not be regarded as binding.

But from this chaos, prosperity did eventually come. A quick minded few made fortunes selling picks, shovels, food and clothing to the gold seekers. In time, order was restored.

The Present
With the age of economic solar energy upon us, there will be talk of "Gold from the Blue Sky"(tm). Its a claim worthy of the of California Gold Rush hyperbole. Only this time it is true:

Converted into its cash equivalent, solar energy falls on your rooftop like a light rain of pennies, gathering about $25 every daylight hour.

So prepare for another Gold Rush. But this time the masses won't just be coming to California. They will be entering the solar business in every corner of the global market. Over the past year, some wise heads have suggested moderation in forecasting this new industry. They remind us that it takes time to build proper factories, supply chains and customer awareness. With confident certainty, they point out that the supply of silicon itself is currently constrained and all incumbent members of the supply chain worldwide are operating at capacity. Some of the most likely companies to successfully enter the solar arena (experts in semiconductor manufacturing such as IBM, Intel and TSMC) are only just starting to explore the issue -if at all. The wise heads are justified in their assurance of moderation. It would seem that even hitting a mere 20% solar target by 2020 is could be overly ambitious.

But Gold Rushes are full of surprises.

The valiant incumbents of the solar industry will enjoy a brief surge of success as customer adoption explodes. However, their decades of momentum with conventional approaches to this business will be surpassed by new entrants who will have no problem rewriting the rules. Just as bank tellers and farmers walked across burning deserts to become gold miners, wild-eyed companies and investors with no prior experience or interest in solar (or Green) will hurl themselves into the mix. Without pre-existing notions of fair play or a sense of community, the new entrants will write their own rules. They will do unexpected things, bringing practices from their native business environments. (How will a Chinese towel manufacturer behave on the solar playing field?) They will innovate in unconventional ways. The status quo will be left behind.

As the solar gold rush begins, the giant solar incumbents such a Sharp are making more money than they ever have before. While they celebrate their long sought success, new companies such a SunPower (with its record holding high efficiency cells), and Miasole (who aspires to develop an entire new material technology for solar), will soon pass the incumbents in the marketplace.

Consider the story of LDK Solar. In January of 2005, just as the industry was warning that supply constraints would cap growth to just 5% for 2006, LDK Solar was founded in China by by a man living in the United States. He had no experience with semiconductor technology or manufacturing. He had no preconceptions. LDK found a growth-positive community with no manufacturing employment base that sought to participate in the new solar industry. Thus, LDK enjoyed a motivated permitting process measured in days rather than years and a school system that would redirect itself to training workers for LDKs enormous factory. Founded in 2005, LDK went from an empty field field to an NYSE IPO (It was too large for NASDAQ.) on June 4, 2007 with a market cap of $4B. LDKs capacity is sold out sold through 2009.

This has all happened before, but never before has the pattern been so recognizable in advance. The same forces that have always conspired against incumbents are still in place. Sharp and Kyocera could invest substantial R&D into CIGS based cells and use their operational effectiveness to squash Silicon Valley upstarts. For that matter, a Petroleum Energy such as Exxon could tap its record profits of late and simply acquire the top contenders in every segment of solar. But they won't, and even if the incumbents try to keep up, the upstarts will simply move faster, changing the game in the quest for gold.

One hard to accept lesson from Gold Rushes of the past is the greatest fortunes were not made from finding gold at all, but from the selling of picks and shovels.

Perhaps this time the fortune winner will the happy consumer, whistling cheerfully as he farms pennies from his roof every sunny day.

Friday, March 2, 2007

The Sure Things and The Hail Mary

Albert Einstein's photoelectric effect (PV) is the process by which the photons in sunlight are converted into electricity. It is the reverse process that is observed in familiar LED lights. The materials which exhibit this effect are small band gap semiconductors.

There are (currently) four major technical approaches to photovoltaic generation of electricity. Each has an proportional balance of advantages and risks. Each approach is a combination of light gathering (how much sunlight is collected per unit area of a cell), PV conversion efficiency (how much electricity is generated per area of sunlight) and cost (Dollars per Watt of energy produced by the cell).

Each is well represented in Silicon Valley today.


Crystalline Silicon (Ex.: SunPower)
This is a sure thing. Based on the same traditional crystalline silicon that is used in electronics, crystalline silicon solar cells have the advantage of being using extremely well understood physics as well as high volume manufacturing practices. There are literally tens of thousands of industry seasoned experts on this material in the electronics industry. This results in an early advantage in unit cost and manufacturing scalability. Crystalline silicon offers high photoelectric conversion efficiency, but is very complex and expensive to produce. Crystalline silicon cells are actually made from the "waste" wafers that are unusable for electronics.

However, Even with these seeming advantages, crystalline silicon is very complex to manufacture and after forty years of cost reduction, it is a fair concern that flat plate silicon solar cells should not expect many more major cost reductions. (or should we? watch for a future blog..)


The Bottom Line: This is what you see on rooftops today. Nearly all solar cells in existence to day are crystalline silicon based cells. Today they are less expensive than other exotic approaches, but it may be difficult to reduce cost further.

Light Gathering: 1 Sun
PV Conversion Efficiency: 15-18%
Current cost per Watt: $4.80


Amorphous Silicon Thin Film (Ex.
Applied Materials)
Amorphous simply means non-crystalline. Also comprised of familiar silicon, this is a sure thing as well. Because it lacks the delicate crystal lattice structure of crystalline silicon, it is much less expensive to produce (imagine filling a sandbox with sand versus building a house of cards). For the same reason, its PV conversion efficiency is also lower -but not proportionally. Amorphous silicon based solar cells must be larger in order to generate the same amount of power, but the resulting cost will be lower. Amorphous silicon also benefits from incumbent status: It is the material used in LCD displays of which ten square miles will be produced in 2007.

However, while industry experience reducing the cost of amorphous silicon is not as mature as that of crystalline silicon, it has already seen cost fall by 20x. There is certainly still room for improvement, but the bottom of the well may not be far off.

The Bottom Line: Amorphous silicon is slightly less efficient at converting sunlight into electricity but much less expensive to produce. While the physics and manufacturing issues surrounding amorphous silicon are well enough understood that it can be produced in volume today, it is not so well understood that we should not expect further breakthroughs and cost efficiencies. All of the World's expertise with crystalline silicon for electronics can easily be ported to amorphous silicon.

Light Gathering: 1 Sun
PV Conversion Efficiency: 8-12%
Current cost per Watt: $3.99



Concentrated Photovoltaic (Ex.: SolFocus, Silicon Valley Solar)
This starts to be more of a long shot. The Concentrated PV approach addresses the high cost of the semiconductor material by using optics to focus a given area of light onto a small unit area of extremely high efficiency , but still proportionally less expensive compound semiconductor material. For example, by using 500x optical concentration (500 Suns), concentrated PV cell will generate as much electricity with 1 cm2 of semiconductor material as a standard (1 Sun) PV cell would produce with 500 cm2 of semiconductor. The idea is that the reduced cost of semiconductor material required will more than offset the added cost of optics and tracking motors (CPV cells typically must be aligned with precision toward the sun, tracking it across the sky through the day and the seasons)

However, it remains to be seen if the structural and maintenance costs of optics and motors over a twenty year lifetime outdoors will be justified by the accompanying increase in efficiency.

The Bottom Line: The principal of trading mystically delicate and expensive semiconductor material for apparently simple optics and tracking motors is reasonable, but there is a real challenge to the reliability and maintenance costs of anything that sits on a roof for twenty years. No one has been able to make this quite work yet.


Light Gathering: 2 to 500 Suns
PV Conversion Efficiency: 26%
Projected cost per Watt: <$3.00



CIGS Thin Film (Miasole, Nanosolar)
CIGS (Copper, Indium, Gallium, Selenide) is the Hail Mary, the long shot that could win the game. The preceding approaches all struggle with the manufacturing cost of their PV semiconductor material. CIGS approach seeks to reduce the cost of the semiconductor itself. Discovered in 1975, CIGS is a relatively new material, lacking the benefit of an enormous knowledge base of silicon. Despite this humble beginning, CIGS has demonstrated PV efficiency as high as 20% and thanks to a manufacturing process that requires comparatively moderate temperature and pressure control relative to silicon, it promises a dramatic reduction in energy cost. As an added benefit, CIGS PV cells are flexible, allowing cosmetic applications that are not practical with brittle crystalline silicon cells. It also greatly simplifies the demands of the panel structure -further reducing cost.

However, put simply, no one has ever been able to produce CIGS solar cells in high volume despite more than $140M of venture capital invested in Silicon Valley alone. In order to succeed, CIGS companies must develop new material physics, new manufacturing techniques and combine them into high reliability, high volume manufacturing processes. The risk is high, but the reward is its match.

The Bottom Line: CIGS has the best chance of delivering solar electricity at an price that will compete with coal. If CIGS is successful in its ambitions, it will be most important commercial development of this century.

Light Gathering: 1 Sun
PV Conversion Efficiency: up to 20%
Projected cost per Watt: <$1.00



What comes next? There's a very good bet. Watch for a future installment of The Solar Evangelist...


Friday, February 2, 2007

The Age of Economic Solar Energy Begins

Most of you reading this are entrepreneurs. A familiar entrepreneurial challenge in launching anything new is overcoming the unfamiliarity and resistance in the marketplace.

That’s not a problem with solar. Sunlight is clean and life giving. We love the Sun. We want to bask in it.

How ready are people for Solar? People not only like solar. They're begging for it.


The Solar Energy Opportunity
At more than $1 Trillion per year, electricity production is tied with global oil production and bested only by food, clothing and shelter as a share of global GDP. This is almost entirely based on coal and nuclear. And nobody is happy about that.

Disrupting and transforming this global power infrastructure to cheaper, more economical and more flexible solar energy will be the most important economic and cultural change force of our lifetimes. Our energy consumption and conservation habits based on scarcity, inflexibility and even guilt will change radically.

Solar energy’s roots begin just over a hundred years ago. Albert Einstein was awarded his single Nobel Prize not for the E=MC2 of atomic energy, but for the photoelectric effect. The first solar cells were realized in the mid 1950s and in 1975, the first terrestrial solar electric company was formed.

We find ourselves at the threshold of this new era. California in particular is uniquely equipped to take the leading role in the next generation of photovoltaic (PV) energy production.
  1. Drawable talent from native Semiconductor Manufacturing, Equipment and Thin Film industries
  2. Entrepreneurial Spirit, Venture Capital, Research Universities
  3. The most solar-positive marketplace in the United States
  4. California by itself is now the 3rd largest market for solar energy in the world as a result of Governor Schwarzenegger “million solar roofs” initiative
  5. A base of existing companies such as SunPower leading the World in silicon cell efficiency.
  6. Start-ups like Miasole and Nanosolar who are aimed at slashing the cost of solar power by more than half.

    Are you ready for one trillion dollars to change hands as Solar takes its place in our society? Everything is about to change.