Photos: Solyndra
SAN FRANCISCO – The chatter of the Financial District types who lunch at One Market is a bit deafening, so I’m sure I’ve misheard when Solyndra CEO Chris Gronet tells me how much funding his stealth solar startup has raised. “You said $60 million, right?” I ask.
“$600 million,” he replies.
That pile of cash from investors ranging from Silicon Valley venture capitalists to Richard Branson to the Walton family wasn’t the only big number Solyndra revealed to Green Wombat in anticipation of the solar panel manufacturer’s public debut Tuesday after operating undercover for more than three years. “We have $1.2 billion in orders under contract,” says Kelly Truman, the Fremont, Calif.-based company’s vice president for marketing and business development.
The stealth startup is a Silicon Valley archetype, along with the baby-faced Web 2.0 mogul and the millionaire stock-option secretary. But perhaps no company in recent memory has managed to hire more than 500 people and build a state-of-the-art thin-film solar factory – in plain view of one of the Valley’s busiest freeways – without attracting much attention beyond a few enterprising green business blogs.
Thin-film solar has been something of a Holy Grail in Silicon Valley, with high-profile startups like Nanosolar – with nearly $500 million in funding itself – all vying to be first to market with copper indium gallium selenide solar cells. CIGS cells can essentially be printed on flexible materials or glass without using expensive silicon. While such solar cells are less efficient at converting sunlight into electricity, production costs are expected to be significantly lower than making traditional silicon-based modules. (Thin-film companies like First Solar (FSLR) – also backed by the Waltons – use an older technology.)
Yet Solyndra bursts onto the scene with a factory operating 24/7 and a billion-dollar book of business. The reason for Solyndra’s secrecy – and success with investors and customers – is sitting in a bazooka-sized cylinder propped up beside Truman at the restaurant. He pulls out a long, black glass tube that is darkened by a coating of solar cells.
The cylindrical shape is the key, according to CEO Gronet. Conventional rooftop solar panels must be tilted to absorb direct sunlight as they aren’t efficient at producing electricity from diffuse light. But the round Solyndra module collects sunlight from all angles, including rays reflected from rooftops. That allows the modules, 40 to a panel, to sit flat and packed tightly together on commercial rooftops, maximizing the amount of space for power production.
“We can cover twice as much roofspace as conventional solar panels and they can be installed in one-third the time,” says Gronet, a boyish 46-year-old who holds a Stanford Ph.D. in semiconductor processing and was an 11-year veteran of chip equipment maker Applied Materials (AMAT) before he started Solyndra in May 2005.
And because air flows through the panels they stay cooler and don’t need to be attached to the roof to withstand strong winds. That means installers simply clip on mounting stands and then snap the panels together like Legos.
“For flat commercial rooftops this is game-changing technology,” said Manfred Bachler, chief technical officer at European solar installation giant Phoenix Solar, in a statement.
Solyndra’s target is the 30 billion square feet of flat roofspace found on big box stores and other buildings in the U.S., according to Navigant Consulting – a potential $650 billion solar market. The emerging business model is for a solar developer to finance, install and operate a commercial solar array and then sell the electricity to the rooftop owner. Solyndra’s business is to supply the solar panels to the installers, a market crowded with competitors like SunPower (SPWRA) and Suntech (STP).
A good chunk of the $600 million the company has raised has gone toward building its 300,000-square-foot solar fab. A video Gronet and Truman played for me shows a highly automated factory, with robotic assembly lines and robot carts moving the solar modules through the production process.
The fab – which can produce 110 megawatts’ worth of solar cells a year – already is shipping panels to big customers like Solar Power in the U.S. and Germany’s Phoenix Solar – three-quarters of its $1.2 billion in orders are destined for European companies. Solyndra is in the process of obtaining permits for a second 420-megawatt fab in Fremont; upon its completion, Solyndra would become one of the biggest solar cell manufacturers in North America. (Gronet says a third fab will be built in Europe, Asia or the Middle East.)
That has helped Solyndra attract a long list of investors, from Silicon Valley VCs like CMEA and US Venture Partners to Madrone Capital – the Walton family’s (WMT) private equity fund – and Masdar, the Abu Dhabi company whose mission is to transform the oil-rich emirate into a green tech powerhouse. Another high-profile investor is Richard Branson’s Virgin Green Fund.
“We looked at 117 solar companies and have made two investments, including Solyndra,” says Anup Jacob, a partner at Virgin Green Fund and a Solyndra board member. “Dr. Chris Gronet and his team came out of Applied Materials and really took the best and brightest of Silicon Valley. They’re great scientists and operations people.”
Jacob told Green Wombat that Virgin hired Stanford scientists to evaluate Solyndra’s technology and engineering firms to vet its solar factory. “Because we’re late-stage investors, we were able to look at all their major competitors,” he says. “There’s a number of well-heeled solar companies that have said they are going to do a lot of things but haven’t delivered.”
Virgin concluded that Solyndra could make good on its promise to make solar competitive with traditional sources of electricity. “As a rooftop owner, all you care about is how much electricity you can get from your rooftop at the cheapest price possible,” he says.
One challenge, he adds, was keeping mum about Solyndra. “I gotta tell you that Richard Branson is a guy who loves to talk about what’s he’s doing and it was real effort to honor Solyndra’s wishes to keep quiet.”
I like the concept, but I would be interested to know what the energy production per sq-ft of roof space is compared to more traditional flat panels. Seems like at least half of the array on each tube will always be in the dark.
Not to mention that the whole issue of spacing out traditional panels so they don’t cast shadows on each other isn’t changed. Just that with this, the cells profile is lower, so the tubes are closer together. But what percentage of roof space is actually covered?
Hi Jay- If you go to Solyndra’s webstie, you can see their illustration of how their cylnder tube collect light , which is more effective than traditional flat panel. But the other big question I have it how much solar energy is produce per square foot\ or by some other solar density measurement than traditional thin-film or polysilicon panels?
Great idea but maybe a logical extension of this would be to allow a tube conveying water to be passed through each cylinder so that water could be heated as well, no?
Can’t do the water because the tubes are hermetically sealed to keep moisture out. Apparently moisture degrades the photovoltaic material.
How do they deal with cell mismatch, with different parts of the cell receiving different amounts of sunlight — and thus generating different photocurrent responses — at any given time?
Those tubes sure look like they could be adapted for water to pass through, don’t they?
I doubt you can efficiently heat with these things as there will simply be too many connections – the weak point – and water will be leaking out somewhere once the pressure rises due to heat. Many small businesses located in flat-roofed buildings just aren’t going to be able to afford the ongoing maintenance a water-system would require.
And a whole lot of small businesses in the industrial warehouses do not want to have to pay for a high-maintenance system.
Any solar-power system has to be simple so that repairs are quick.
“And because air flows through the panels they stay cooler and don’t need to be attached to the roof to withstand strong winds. That means installers simply clip on mounting stands and then snap the panels together like Legos.”
That won’t work with a lot of building codes or insurance companies. If these modules aren’t securely attached to the roof, just wait until after a 60 mph windstorm blows through, and find out how many lawsuits you get. Furthermore, if not anchored, they’re easier to steal. Duh !!!
Thanks for the article. Any idea what the cost per watt might be? And how many watts per tube?
These are PV solar, not thermal solar for heating water. The Solyndra website claims “Solyndra’s panels have been tested and are certified for use in winds of up to 208km/h (130mph),” which might still be a little light for some areas, depending on the safety factor.
The big benefits are
1) better ventilation than flat systems, so little heating to degrade performance;
2 )much cheaper installation;
3) claimed better light collection (direct, diffuse, reflected);
4. Greater panel density, hence, greater energy density.
It would be nice to have some numbers on the above claims. However, the concept seems really solid for retrofits onto existing flat roofs. For new building, I expect some serious competition from integrated systems (i.e., Solar Ovonics integrated PV roofing).
One question I have that doesn’t seem to be addressed in ANY of Solyndra’s press releases is, how fragile are these “glass tubes”? Rooftops are exposed to some pretty mean hailstorms in the best insolation states!