Solar Thin Film Technology has been growing rapidly despite falling costs of the mainstream Photovoltaic Crystalline Silicon Technology.While the current solar supply glut has resulted in some of the thin film solar film companies going out of business,big thin film suppliers continue with their growth plan.Solar Thin Film Technology is supposed to be the 2nd Generation successor to the mainstream Crystalline Silicon (c-Si) Technology which accounts for around 85% of world production.While a number of Weaker Hands in Thin Film have downed shutters,Thin Film Producers continue to grow and expand.The massive growth potential of Solar Energy makes it possible for both of these PV technologies to flourish.Thin Film Technology unlike c-Si has a number of variants.Amorphous Silicon (a-Si),Copper Indium Gallium Sulphide (CIGs) and Cadmium Tellurium (Cd-Te) are the 3 main types of Thin Film Technology.There are a number of manufacturers of all of these 3 types of Technology.CIGs Technology is said to have the most potential in improving efficiency and competing with c-Si,however Cd-Te is currently the top dog as the world’s biggest solar producer First Solar currently uses this technology.a-Si Technology is not that hot with low efficiencies however Oerlikon and Sharp are pushing ahead with developing this technology.
Efficiency of Solar Thin Film Technology
Amorphous Silicon Technology (a-Si)
This Thin Film Technology has the lowest average efficiency of all the solar cell technologies except immature ones like Organic Dye Cells.With most of the a-Si thin film competitors bankrupt or in a moribund state,Sharp is the only big player remaining claiming a 10% efficiency.Oerlikon has said that its new generation equipment will cuts cost to 70c/watt and improve efficiency to 10% from the current 9%.
Copper Indium Gallium Diselenide (CIGs)
This Thin Film Technology has the highest Solar Cell Efficiency and a number of established companies like TSMC,Q-Cells,Honda and startups like Miasole,Nanosolar,Solyndra are using this technology.However its production is not easy as four different materials are used.Miasole has been claiming to have achieved an efficiency of 13.8%.General range is between 11-14%.
Copper Indium Selenium (CIS)
Solar Frontier claims 11.5% efficiency for its CIS modules which are expected to go upto 14% by 2014.Note it is very closely related to the CIGs Technology differing only in the fact that it does not use Gallium.
Cadmium Tellurium (CdTe)
This technology has around 12% efficiency though GE has said that it has managed to attain 15% efficiency on commercial glass.Don’t know how much of it is true since First Solar only manages around 12% efficiency despite around 10 years of dedicated R&D.First Solar has claimed a best cell efficiency of more than 17% and is targeting to reach 15% solar panel efficiency in a couple of years as well.
Copper Zinc Tin Sulfure Selenium (CZTS)
Cost of Thin Film Solar Panels
Thin Film Solar Panels Cost has touched almost $1/watt as it normally is priced 15-20% cheaper than crystalline solar panels,though some companies like First Solar and Sharp manage to sell at higher price because of their brand name and system business.For utility large scale buyers of solar panel buyers,the cost is much lower.Solar Panels Costs have trended down quite in the last 3-4 years except in 2010 when they went up as solar panel demand increased by more than 150% .Solar Panel Costs are the biggest component of a Solar System Cost.The reason for the lower price of Thin Film Solar Panels is that they produce lower amounts of power for the same area of solar panels.This increases the balance of system costs like wiring,construction etc.However Thin Film Solar Panels can give better performance in some conditions like high temperature compared to silicon solar panels.
Manufacturers of Solar Thin Films
1) First Solar – First Solar is the only Solar Thin Film Manufacturer in the world and a benchmark for other thin film companies thinking of making it big.The company was promoted by Wal-Mart promoters and has seen remarkable growth in the last few.This US based company uses Cadmium Tellurium (Cd-Te) Technology and is the lowest cost panel producer in the world today if you don’t include any penalty for low efficiency.Even if you penalize the Cd-Te Technology for its lower efficiency vis-a-vis the higher efficiency crystalline technology,First Solar is clearly the leader with a core cost of 74c/watt.The company has a roadmap of reducing the cost to 52c/watt by 2014 and given its track record it seems quite achievable.There is little doubt about First Solar’s ability to survive and flourish due to its massive first mover advantage.
2) Sharp – Sharp,the Japanese Zaibatsu known more for its Electronics Products is also the world’s No 1 Company in terms Solar Module Revenues.Despite its leadership in c-Si Technology,it has shifted focus to a-Si thin film due to higher costs.Sharp has started shipping a-Si modules from its 1 GW capacity plant in Sakai.With its established distribution strengths and technological abilities in LCD Technology,Sharp is one company that can survive the c-Si onslaught.With most of the a-Si thin film competitors bankrupt or in a moribund state,Sharp can capitalize to completely capture this space.However the cost structure of Sharp is not clearly known right now to make a clear call on how this will turn out.Also a 10% efficiency while decent for a-Si technology fall far short of the 13% claims by CIGS start-ups like Miasole.
3) Solar Frontier - Solar Frontier is a subsidiary of Showa Shell Sekiyu and is listed on the Japanese Stock Exchange.The Company has big plans for the Solar Energy Market planning to increase its capacity by more than 10 times in 2011 to around 1 Gw in total.All its 3 plants are located in Miyazaki in Japan and uses previous plasma plant of Hitachi.Solar Frontier claims 11.5% efficiency for its CIS modules which are expected to go upto 14% by 2014.The Company is spending around $1 Billion in Capex for building the 1 GW capacity implying roughly $1 capex/watt which is not exactly cheap though not very expensive either.
4) Miasole – Miasole made a major splash announcing a record breaking 13.8% efficiencythin film module which it will ship in 2011.The company has also raised another $100 million in equity finance despite fall in its pre-IPO valution to $550 million from $1.2 billion earlier.Seems an attractive target for a takeover.
5) Nanosolar – This secretive CIGs startup has big backers in the form of Google and others.The company is planning to build a massive plant in US but till now there has been little news about its commercial shipments,efficiency or costs.Remains to be seen if it manages to succeed or joins the long list of thin film deaths.
6) Abound Solar - Abound Solar which is a CdTe startup has also received a massive loan guarantee like Solyndra earlier.This money is going to be used to set up manufacturing facilities in Indiana and Colorado.Abound Solar has been heavily supported the the US government’s National Renewable Energy Laboratory (NREL) and is in the process of starting a 200 MW plant in Colorado.
8) TSMC- Stion – TSMC recently bought a 21% equity stake in CIGs startup Stion for $50 million.The partnership will involve TSMC licensing Stion’s technology and doing joint research on further enhancing the technology.Stion has claimed that it has achieved a >13% efficiency and plans to increase it to 15% in the near future.TSMC has been quietly making further investments to build a large capacity in Taiwan using this technology.It recently bought module making equipment from another Taiwanese company and has also invested a substantial amount in constructing buildings and facilities for the new CIGs fab.TSMC has earlier invested in c-Si through a equity stake in Motech.
9) Masdar -Masdar PV the Abu Dhabi backed Renewable Energy company is facing problems with it its thin film business,recently firing top executives at its German thin film division.It uses SunFab Technology which has been shuttered by Applied Materials.The company ships some thin film modules here and there but is no longer an important player.
10) Saint Gobain- Hyundai – Global Glass Giant Saint Gobain is expanding its presence in the Solar Energy Manufacturing by partnering with Hyundai Heavy Industries to build a CIGs plant in South Korea with a $198 mm investment.The 50:50 JV which will be known as Hyundai Avancis will be situated in South Korea which is one of the hottest GreenGeographies in the world currently.
11) Ascent Solar – This US Based Company has a long history of making Thin Film Panels on Flexible Substances.The company is trying to survive against the onslaught of competition through strategic tie-ups with a number of companies around the world which will uses its Niche Technology.
12) Energy Conversion Devices – After First Solar,Energy Conversion Devices seemed the mostly likely viable c2mpany in Thin Film Technology.After a few quarters of profits in 2008,the company went into the red as its flexible a-Si modules failed to cut costs as fast as others.It has been shutting factories in the US and shifting to low cost locations.Still one of the biggest independent Thin Film Producers.Seems more likely that it will be bought out then survive independently.
13) Trony Solar - Trony Solar is the largest Solar Thin Film Producer in China and uses a-Si Technology to producer Solar Panels used mostly in Off-Grid Applications.The company uses its own custom made equipment and manages to get decent margins for its products.The company recently listed on the HK Stock Exchange.
14) Astronergy – Astronergy is a producer of high-efficiency thin film PV modules in mainland China, and also makes monocrystalline and polycrystalline PV modules.It is a part of the Chint Group which is one of the largest electronics suppliers in China.The company used equipment from the Oerlikon Group and produces thin film amorphous solar panels in the range of 110-140 Watts.
There are also small number of Thin Film companies like Solexant,Heliovolt and others which are still in the stealth stage.DuPont Apollo began production in the fourth quarter of 2009 with two lines that could produce 50 megawatts of panels per year in Shenzen.Other famous producers are Mitsubishi,NexPower,Kaneka,Moser Baer,Topray,Schott Solar.However for small companies to survive is becoming increasingly tough in a cutthroat market where established solar companies like Q-Cells are facing the specter of bankruptcy
Thin Film Solar Stocks
Note Thin Film Solar Companies are mostly privately held like Miasole,Nanosolar,Stion and others.However there are a few solar thin film stocks which trade on stock exchanges.Note most of the stocks have small market capitalization except for First Solar which is the biggest thin film stock by value.Some of the solar stocks have faced a torrid 2011 with massive oversupply of solar panels and competition from low cost Chinese Solar Panels.Here is a list of Solar Thin Film Stocks
1) First Solar (FSLR)
2) Ascent Solar (ASTI)
3) Energy Conversion Devices (ENER)
4) Trony Solar (it is listed on the Hong Kong Stock Exchange)
5) Sharp (listed in Japan and US Pink Sheets)
Besides these companies here is list of the solar thin film ventures and companies that have shut down or are in the process of shutting down
- Applied Materials is perhaps the biggest loser with the managment all but giving up on its Thin Film Equipment Division (SunFab).This turnkey technology has failed to keep up with the decline in costs and improvment in Technology.With most of its customers already writing off their investments,AMAT too has reduced support to SunFab
- Oerlikon Solar like AMAT had bet its future on supplying a-Si Thin Film Equipment to customers and was giving Applied Materials tough competition.However the falling poly prices have resulted in sharp order cuts for Oerlikon and the survival of its thin film division too is in doubt
- Q-Cells has written off its investments in 2 of its thin film divisions -Calyxo (CdTe) and Sunfilm (aSi).Only Solibro (CIGS) division has survived the major restructuring of Q-Cells which saw a multi billion dollar loss in 2009 and resignation of its CEO.
- Suntech a-Si Division which was set up in Shanghai with a SunFab equipment from Applied Materials has been written off according to the management and will be retooled to manufacture high efficiency c-Si cells.
- Moser Baer was one of the first customers of Applied Materials SunFab Line.However the company had problems in ramping up its line.Recent results do not inspire any confidence in the success of its thin film venture
- Signet Solar was one of the best known a-Si startups with a strong management team.However like other SunFab customers it is too facing a bleak future with recent news of cancellation of its expansion plans
- Sanyo had set up a JV with Nippon Oil with grandiose plans to manufacture a-Si panels with a planned 1 GW capacity by2015.This JV Sanyo Eneos too is deferring its expansion plans with the cost/efficiency metrics not being competetive against c-Si modules
- Masdar PV the Abu Dhabi backed Renewable Energy company is facing problems with it its thin film business,recently firing top executives at its German thin film divisio
Second Wave of Solar Bankruptcies
1) Solyndra – The biggest and most famous solar bankruptcy of all times with the Obama administration coming under a massive attack.The company raised a billion dollars in equity and debt for its custom made cylinderical thin film CIGs solar panels.However the relentless competition from the low cost Chinese and its high cost structure has made it almost impossible for the company to survive any longer.
2) Suntech closed its CSG division which it had bought in the 2008 boom but was facing an uncertain future.
Heliovolt and Ascent Solar have sold controlling equity stakes to Asian conglomerates like the SK Group being unable to go ahead alone given the substantial costs of manufacturing expansion and marketing etc.