Although silicon is the market common semiconductor in many electronic units, including the pv cells that sun panels use to transform sun rays into energy, it is not really the most cost-efficient product on the market. For instance, the semiconductor gallium arsenide and similar compound semiconductors provide practically two times the effectiveness as silicon in photo voltaic units, but they are rarely employed in utility-scale applications because of their high production value.

U. of Illinois. (http://illinois.edu/) professors J. Rogers and X. Li explored lower-cost techniques to produce thin films of gallium arsenide which also granted usefulness in the sorts of units they might be incorporated into.

If you can minimize significantly the price of gallium arsenide and some other compound semiconductors, then you could increase their variety of applications.

Generally, gallium arsenide is placed in a single thin layer on a smaller wafer. Either the ideal device is made right on the wafer, or the semiconductor-coated wafer is break up into chips of the desired dimension. The Illinois group decided to deposit numerous levels of the material on a individual wafer, creating a layered, “pancake” stack of gallium arsenide thin films.

If you increase 10 levels in 1 growth, you simply have to fill the wafer 1 time. If you do this in ten growths, loading and unloading with temperature ramp-up and ramp-down get a lot of time. If you consider what is needed for every growth – the equipment, the procedure, the period, the people – the overhead saving this solution gives is a significant cost decrease.

After that the researchers separately peel off the layers and shift them. To complete this, the stacks swap levels of aluminum arsenide with the gallium arsenide. Bathing the stacks in a formula of acid and an oxidizing agent dissolves the levels of aluminum arsenide, freeing the single thin sheets of gallium arsenide. A soft stamp-like system picks up the layers, 1 at a time from the top down, for exchange to another substrate – glass, plastic or silicon, based on the application. After that the wafer can be reused for another growth.

By doing this it’s possible to generate significantly more material much more quickly and more price efficiently. This process could generate mass amounts of material, as compared to just the thin single-layer method in which it is usually grown.

Freeing the material from the wafer additionally starts the possibility of flexible, thin-film electronics made with gallium arsenide or additional high-speed semiconductors. To make units that may conform but still keep higher efficiency, which is considerable.

In a paper published on-line May twenty in the magazine Nature (http://www.nature.com/), the team describes its procedures and demonstrates 3 kinds of units making use of gallium arsenide chips manufactured in multilayer stacks: light units, high-speed transistors and photo voltaic cells. The authors additionally offer a comprehensive price comparability.

Another advantage associated with the multilayer technique is the release from area constraints, particularly essential for solar cells. As the layers are eliminated from the stack, they could be laid out side-by-side on one more substrate in order to generate a much larger surface area, whereas the typical single-layer process limits area to the size of the wafer.

For photovoltaics, you want big area coverage to get as much sunshine as achievable. In an extreme case we may grow sufficient levels to have ten times the area of the traditional.

Next, the team plans to explore more potential product applications and additional semiconductor resources that could adapt to multilayer growth.

About the author: Shannon Combs gives advice for the residential solar power tax credits blog site, her personal hobby website based on guidelines to aid home owners to conserve energy with sun power.

Technorati Tags: photo voltaic panels

Mama Sarah said: “I am very pleased that my home has been improved thanks to solar energy and I’ll make sure my grandson hears about it. Solar power is clean, reliable and affordable, unlike paraffin that is widely used in the area. Also, we now have qualified youth in the village who can help with the upkeep of the systems.”

The solar installations are part of a 20 day renewable energy workshop hosted by Greenpeace’s Solar Generation with 25 participants from the Kibera Community Youth Programme and community members of Nyang’oma Kogelo. Young Kenyans are learning how solar photovoltaic panels generate electricity and about their installation and maintenance, the fabrication of self-assembling solar lamps and marketing potential.

Robert Kheyi, project coordinator for the Kibera Community Youth Programme, said: “The workshop and practical installation of solar power are a critical opportunity for us to develop our own skills in renewable energy installation. Not only do we get to act against the devastating effects of climate change in Kenya, but also develop a source of revenue.”

Kenya, like many other countries in Africa, is on the climate impacts front line. It has seen a drastic reduction in rainfall in recent years. Drought has worsened problems in agriculture caused by poor land use and desertification, making Kenya’s large scale hydro power unreliable.

Faced with these challenges, investing in solar energy technologies is a win-win strategy. It strengthens the economy and protects the environment, while ensuring a reliable and clean energy supply. The solar industry is ready and able to deliver the needed capacity. There is no technical impediment to doing this, just a political barrier to overcome as we rebuild the global energy sector.

“It is time for the industrialized countries to give something back. At the Copenhagen Climate Summit this December President Obama and other world leaders must agree to avert further climate chaos including agreeing to fund projects like this throughout the developing world to help them both adapt to and mitigate climate change.” said Abigail Jabines, Greenpeace Solar Generation campaign coordinator.

Greenpeace is calling for rich countries to contribute US$140 billion annually to support climate adaptation, mitigation and forest protection in the developing world. With just 15 weeks left to go till the decisive UN climate talks in Copenhagen, Greenpeace urges world leaders to emulate the innovative young people of Kibera and Kogelo and translate their climate rhetoric into action in Copenhagen.

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“There are incredible economic advantages these days for going solar, and people are taking action, particularly here in Sonoma,” said Kevin Gage, groSolar’s regional manager. “groSolar knows how to leverage these incentives for people, and we make it fast, easy, and cost-effective for both residential and commercial property-owners in California to generate their own electricity from the sun. To top it off, we’re offering to cover 33 percent of the first year of solar-loan payments for Petaluma and Santa Rosa homeowners if we can get 50 people in those towns signed up for the program by the end of 2009.”

“This is a great idea for homeowners and anyone else thinking about solar power,” said SCEIP participant and Petaluma resident, Patricia Moscato. “The program helps people make a practical investment that’s good for the environment. I would highly recommend this program to all my neighbors.”

groSolar, a leading national solar installation and distribution company with offices nationwide, expanded its presence in California last February with the purchase of Borrego Solar’s residential division. A mission-driven company dedicated to making solar power accessible and affordable, groSolar is now the largest 100 percent U.S.-owned distribution company in the solar industry.

groSolar is kicking this program into high gear at the Sonoma County Home Show, September 18-20, featuring veteran energy consultants from Petaluma and Santa Rosa. “Our dedicated Petaluma and Santa Rosa teams have been working in Sonoma since 2001,” said Gage. “groSolar is about building a sustainable community as well as lowering the price for solar power, and we’re excited to be taking this message to the streets.”

groSolar recently hired three local interns from Petaluma and Santa Rosa to promote the program throughout the county and will be canvassing neighborhoods on door-to-door awareness campaigns throughout the fall. “This is not about brand or competition, this is about the best program in the United States for solar and efficiency,” said Adam Galler a groSolar energy consultant. “Our interns learn about solar, and we ask them to promote the SCEIP program and all the solar installers in our area.”

The door-to-door teams will employ an electric bike that can travel 20 miles unassisted on $.10 worth of electricity, and will also be hosting events with eye-catching vehicles that have solar panels installed on their rooftops at local community centers to educate as many people as possible about the benefits of solar power. There are also two community-focused websites where local residents can sign up for more information at www.petalumasolar.com and www.santarosasolar.com

Technorati Tags: Petaluma, Santa Rosa, solar energy, sonoma county energy

The follow-on prototype unit will be lighter, 2/3 the diameter of the P.O.C. unit seen here and will be constructed of lightweight composite materials suitable for tower mounting. This unit will also be sized for a 10kW brushless alternator and is intended to be suitable for erection near military surveillance radar installations, due to the inherent non-interfering nature of this design. This turbine should also deliver power at a cost comparable to present coal-fired powerplants, inasmuch as there is but one rotating component, which consists of the turbine/driveshaft/alternator assembly, with no heavily loaded bearings. Cost of this unit is projected to be in the order of approximately USD$1.50/watt in 2009 dollars, uninstalled.

Efforts are currently underway to secure additional R&D grant funding for follow-on prototypes. Production licenses are available worldwide.

Contact: Howard Fuller, CEO, Solar Aero Research, 77 Pleasant Street, Unit G, Greenville, NH 03048, USA. (508) 344-3885, http://solatec-corp.com

Technorati Tags: solar aero, wind turbine

The Big Texas Sun Club is a voluntary program that Green Mountain customers can join for a $5 monthly fee to raise funds for the construction of new solar projects in Texas and education about solar energy. Since 2002, the Big Texas Sun Club has installed 16 solar arrays in Texas.

“Green Mountain Energy Company’s mission is to change the way power is made,” said Paul Markovich, senior vice president of Residential Services for Green Mountain Energy (www.greenmountain.com) Company. “Each solar array we install through the Big Texas Sun Club helps us achieve that mission and give back to the local community.”

Solar facilities made possible by Big Texas Sun Club members include: Ballroom Marfa; Satori Elementary School in Galveston; Workshop Houston; the Waco Chamber of Commerce, the Houston Zoo; The Museum of Nature & Science in Dallas; the Ronald McDonald House of Austin; and Habitat for Humanity homes in Dallas and Houston.

The 16 existing Big Texas Sun Club solar arrays are responsible for creating nearly 157 kW of solar power, which in one year prevents the emission of over 408,000 pounds of carbon dioxide (CO2). This is the equivalent of not driving 453,000 miles or as much as 24,000 trees would absorb in one year, or recycling 163,000 newspapers.

About Green Mountain Energy Company

Green Mountain, the nation’s leading provider of cleaner energy and carbon offset solutions, was founded in 1997 “to change the way power is made.” The company is the longest serving green power marketer in the U.S. and was ranked the highest in residential customer satisfaction with retail electric service in Texas by J.D. Power and Associates.(1) Green Mountain offers consumers and businesses the choice of cleaner electricity products from renewable sources such as wind and water and carbon offset products through its BeGreen division (BeGreenNow.com (www.begreennow.com)). Green Mountain customers have collectively helped avoid over 4.9 million tons of CO2 emissions. For more information, visit GreenMountain.com (www.GreenMountain.com).

(1)Green Mountain Energy Company received the highest numerical score among residential electric service providers in Texas in the proprietary J.D. Power and Associates 2008 Texas Residential Retail Electric Service Satisfaction Study℠. Study based on responses from 2,572 consumers measuring 8 providers and measures opinions of consumers with their electric service provider. Proprietary study results are based on experiences and perceptions of consumers surveyed in June 2008. Your experiences may vary. Visit jdpower.com.

Technorati Tags: big texas sun club, green mountain energy, solar energy

Known as One Block Off the Grid, or 1BOG, the group organizes homeowners and businesses who are interested in purchasing solar power and then negotiates group discounts with solar installers. The collective approach results in better prices and better terms of service for homeowners and businesses. 1BOG only teams up with established solar installers ensuring high quality service, at a lower price.

1BOG enlisted groSolar, a nationally-recognized solar installer whose prices and service impress longtime advocates of the technology. groSolar also offers financing options through California-based SunRun, which allows homeowners to install the entire system for as little as $1,000 down.

“The combination of gro’s spectacular pricing and their national reach made the decision to select them in San Diego very easy,” said Dave Llorens, 1BOG co-founder and General Manager. “We’ve always admired them and have high hopes for the success of this program.”

“Teaming with 1BOG makes solar more affordable than ever and their grassroots approach is a great success,” said groSolar CEO Jeff Wolfe. “1BOG and groSolar share the same goal: to get solar on as many roofs as possible, as fast as possible.”

1BOG uses tools of political campaigns like e-mail, lawn signs, door hangers, house parties and community organizing to find people that are interested in purchasing solar and to educate people about solar power for their home or business. One of the most common responses canvassers encounter is the perception that putting solar panels on a roof is a complicated process.

“The average solar power installation is less expensive and intrusive than putting new windows in your house,” said Wolfe. “People are realizing that solar power is one of the easiest ways to create long term energy security, while also protecting the environment. With energy prices constantly going up, it just makes sense.”

“The 1BOG model is a brilliant way to get more solar on more homes. They made the process easier and cheaper. Everything I needed to know was clearly explained and they stayed involved throughout the process. There is no question that I would not have moved so expeditiously to get solar on my house without 1BOG. I wholeheartedly recommend them. GO SOLAR!” - Susan, San Francisco

About One Block Off the Grid

1BOG is a community-based initiative - the largest in the country - focused on driving widespread adoption of renewable energy and sustainable solutions through education, community building and collective barganing programs. San Francisco-based 1BOG was founded in June 2008 and has quickly demonstrated the power of community purchasing for solar energy. For more information please visit http://www.1BOG.org.

Technorati Tags: 1bog, off the grid, solar buying group

The response to this year’s survey increased by 80% over last year, with data reported on the solar portfolios of over 90 utilities. The report captures information on solar technologies including photovoltaic and concentrating solar thermal, on both the customer and utility sides of the meter, as well as a comparison of cumulative and annual megawatts connected to the utility grid.

Will the report indicate new trends, significant shifts of project scale, or perhaps implementation of innovative new business models within the industry? Find out by participating in this valuable webinar on Thursday, May 28th and get a copy of the full report, as well as critical insight from SEPA’s research team.

Advance registration for this special Virtual Press Conference/Webinar is highly recommended!

Speakers:     Julia Hamm, Executive Director; Mike Taylor, Research Director/Solar Electric Power Association

Date:     Thursday, May 28, 2009

Time:     10:00 AM Pacific/1:00 PM Eastern (one hour duration)

Registration:     https://www2.gotomeeting.com/register/426685610

Cost:        This event is free to recognized members of the Media, subject to verification.

About the Solar Electric Power Association: SEPA is comprised of over 550 utilities and solar industry members. From national events to one-on-one counseling, SEPA is the go-to resource for unbiased and actionable solar intelligence. Breaking down information overload into business reality, SEPA takes the time and risk out of implementing solar business plans and helps turn new technologies into new opportunities. www.solarelectricpower.org

Technorati Tags: conference, sepa, solar electric power, utilities survey, webinar

“With these new introductions, DuPont science is helping enable the faster spread of solar power,” said William F. Weber, vice president and general manager — DuPont Packaging & Industrial Polymers. “These new encapsulant materials contribute to keeping cost-per-watt low and reducing the total cost of ownership for solar power. We expect growth for encapsulant materials like these of more than 25 percent per year in the next five years, due to the anticipated strong growth in solar module installations globally.”

DuPont™ PV5300 Series sheets are five times tougher and 100 times stiffer than materials typically used as encapsulants. Their structural properties make possible new module designs such as building-integrated photovoltaic (BIPV) tiles that can be installed on building roofs. Companies like SYSTEM Photonics S.p.A of Italy are adopting DuPont™ PV5300 for architecturally appealing built-in rooftop photovoltaic power generation.

The company also launched DuPont™ PV5200 Series sheets which are designed to meet the needs of thin-film solar power generation, a fast-growing segment of the industry. They are based on polyvinyl butyral polymer technology and offer high performance in physical processing. They enable faster, more efficient module production and longer service life.

DuPont is a leading material and technology supplier to the photovoltaic industry with more than 25 years of experience in photovoltaic materials development and manufacturing. DuPont Photovoltaic Solutions represents the broadest portfolio in the solar energy industry, with more than 10 products critical to photovoltaic production, designed to work together to help increase the efficiency and lifetime for both crystalline silicon and thin film modules. Products include:

•    DuPont™ PV Encapsulant Sheets: Ranging from soft to structural, clear DuPont™ PV5200 and PV5300 Series encapsulant sheets offer proven safety and laminating performance, and deliver long-term protection for the most sensitive portions of photovoltaic modules.

•    DuPont™ Elvax® EVA copolymer resins: cushion individual cells from impact and enable the transmission of sunlight to the cells.

•    DuPont™ Teflon® fluoropolymer films for front sheets and flexible panels: offer mechanical strength and durability against cracking, flexibility and nearly 100 percent transparency.

•    DuPont™ Tedlar® polyvinyl fluoride films: deliver long-lasting UV and weather-resistant back sheets.

•    Mylar®, Melinex® and Teijin® Tetoron® PET films from DuPont Teijin Films: provide value-adding, cost-effective film solutions for backsheet laminates.

•    DuPont™ Solamet® photovoltaic metallizations: increase the efficiency and yield of solar cells.

•    DuPont™ Rynite® PET thermoplastic resins: increase safety, eliminate corrosion, and provide long-lasting performance for junction boxes and structural components in harsh environments.

•    DuPont™ Kapton® polyimide film for thin film substrates: provide excellent electrical and thermal properties to thin film modules.

•    Teonex® PEN and Melinex® ST polyester films from DuPont Teijin Films: provide high-temperature dimensional stability, clarity and UV protection for thin film deposition substrates and front sheets.

•    Kalrez® perfluoroelastomer parts from DuPont Performance Elastomers: provide excellent resistance to aggressive chemicals and high temperatures to help reduce the risk of unplanned maintenance.

•    DuPont™ Zonyl® and Capstone™ fluorosurfactants: provide unrivaled wetting aids in semiconductor texturing, offering etch control, reduced waste and improved cell efficiencies.

DuPont – one of the first companies to publicly establish environmental goals 19 years ago – has broadened its sustainability commitments (http://www2.dupont.com/Sustainability/en_US/) beyond internal footprint reduction to include market-driven targets for both revenue and research and development investment. The goals are tied directly to business growth, specifically to the development of safer and environmentally improved new products for key global markets.

Technorati Tags: dupont, photovoltaic sheets, solar cells

The project — known as the Robert O. Schulz Solar Farm — will also provide a unique cost-benefit analysis on how two distinct solar energy solutions — crystalline panels and thin-film — perform under a range of climatic conditions.

SSJID is located in Manteca, between San Francisco and Yosemite National Park. SSJID provides irrigation water for 55,000 acres in the surrounding area. The trend in enterprise solar emphasizing the economic benefits of photovoltaic technology is particularly important for water authorities like SSJID. “The project’s main goal was to stabilize electrical costs, which can spike substantially in summer months given local time of use (TOU) metering;” said SSJID Utility Systems Director Don Battles. In addition to the project’s $400,000 annual electric bill savings, the solar energy systems provide the district with a hedge against rising utility costs. SSJID is also receiving $6 million in cash incentives from the California Solar Initiative program, designed to stimulate solar markets by providing cash incentives of up to 30% of system costs for businesses, public agencies and home owners who go solar.

Phase 1 features 6,720 Conergy 175-watt crystalline modules mounted on a single axis solar tracking system. Tracking systems can optimize peak-time output by as much as 15% over similarly-sized fixed-mount systems. This project optimizes its solar tracking capabilities using software whose origins are based in military tracking technologies. According to Conergy’s Western U.S. Project Director David Vincent, market-tested First Solar thin-film modules were selected for the Phase 2 tracking solution because they perform at a lower cost-per-watt than traditional crystalline. To help SSJID monitor system output, Conergy installed equipment on the inverters that sends power generation information to monitoring and reporting company Fat Spaniel Technologies. A bonus is that through the Fat Spaniel Web site, they’re also able to compare the 1 MW, Phase 1 SSJID tracking system with several systems, among them a 1 MW fixed-axis roof-mount system on a fruit-packing house in nearby Hanford, California — a system that Conergy also installed.

The availability of data has generated a friendly competition. The Conergy- SSJID team’s innovative approach to renewable energy and the Robert O. Schulz Solar Farm case study are providing illuminating new data that will open the floodgates of solar opportunity for water authorities and agri-businesses across the U.S. Learn more at www.conergy.us.

Technorati Tags: conergy, solar energy, thin film

Contractors, home builders, electricians, welders, roofers, engineers, architects, glazers, building managers and others feeling the pain of this economy’s ‘construction obstruction’ can learn how to successfully realize the promise of the Obama Administration’s Clean Energy Economy at the non-profit American Solar Energy Society’s (ASES’) SOLAR SUCCESS!™ (http://www.solar-success.org) Training Event, May 11-14, 2009, underwritten by the solar experts at Conergy.

The event — a not-for-profit training event and therefore tax deductible as specified in current tax code — is co-located at the 38th annual ASES National Solar Conference in Buffalo, NY. Register at www.Solar2009.org. Last month, U.S. Labor Secretary Hilda L. Solis announced that the Obama Administration is making more than $3.5 billion to states for education, training and re-employment services.

So where’s the opportunity?

In his address to the U.S. Congress on February 24, President Barack Obama committed to investing $15 billion a year to create conditions that will double the amount of renewable energy produced in America in the next three years. The investments create fertile ground for thousands of businesses and entrepreneurs to engage in renewable energy innovations that make solar affordable for businesses, home owners and public agencies, while helping them save billions of dollars on their energy bills.

“Many of those engaged in the construction trades don’t realize that their skill sets and companies can be efficiently transitioned into the burgeoning business of solar energy,” said Donald Chung, Managing Director of Distribution for Conergy Americas, a full-service wholesale distributor serving a network of over 1,000 solar energy dealers and installers across the U.S. “They already possess about 80% of the knowledge and capabilities needed to be successful in solar,” he said. “With a decade of market experience and a 1 Gigawatt global solar energy portfolio, we at Conergy have the expertise, suppliers, logistics infrastructure and financial service network to give those wishing to diversify into solar the additional 20% they need to succeed in our industry.” Nearly one in 10 of the solar energy systems designed, distributed or installed in the world have the power of Conergy behind them.

“The SOLAR SUCCESS!™ workshop is designed to provide essential industry insight to those interested in breaking into the business and contributing to the momentum of our new Clean Energy Economy,” added Chung. “While the construction industry has been heavily affected by the current economic downturn, the solar industry has been growing at a clip of over 30% per year — and it is projected to maintain that growth over the next few years. Never has this industry held more promise for those looking to diversify and build their businesses — or parlay their expertise into rewarding career opportunities,” he said.

SOLAR SUCCESS!™ offers a menu of over 30 interactive sessions for entrepreneurs in two, four or six-day tracks (Solar Success! for Start-ups, Solar Success! Fast Track, and Solar Success! All Access) depending on their level of business exposure. Sessions are organized in the following tracks:

* System Design and Installation: Industry best practices, technical, code-compliant design & installation practices for optimal system performance, NABCEP-approved training and OSHA requirements for installers and project managers;

* Manufacturer Training: Hands-on training from renowned industry manufacturers covering product features and benefits, system performance and new product introduction;

* Business & Project Finance Training: Tools and services to accelerate sales and streamline small business operations;

* Sales & Marketing Strategy: Identifying and understanding what motivates customers in today’s economy, market incentives and financing options, state renewable portfolio standards overview, effective lead generation through marketing and public relations campaigns and positioning your business for rapid success.

Last year, over 500 professionals participated in the event, making it the largest installer training in the industry. After training, participants have access to the entire SOLAR 2009 trade show floor, where they can network and take deeper dives into key subject matter with hundreds of industry leaders, including manufacturers, installers, researchers, scientists, engineers, investors, analysts, educators and public officials. To learn more about SOLAR SUCCESS!™ costs, content and accommodations, please visit www.Solar2009.org.

The rays of opportunity solar brings to today’s economic climate are clear. The ASES Green Jobs Report asserts that as many as 37 million U.S. jobs can be generated by the renewable energy and energy efficiency industries by 2030. It concludes that renewable energy and energy efficiency have the potential to energize and employ nearly 17% of the future U.S. workforce over the next two decades. Ninety percent of those jobs are anticipated to be in the private sector.

According to ASES Conference Director Becky Campbell-Howe, today’s interest in renewable energy is unprecedented. “With enticing federal tax credits, billions of dollars in grants and loans, state-funded cash rebates, renewable energy portfolio standards and a groundswell of consumer support for sustainable solutions that promote energy independence, the economics of renewable energy have never been more compelling,” she said. “Solar energy is not just good for the environment, it’s a job-creating, business-building, revenue-generating revolution whose time has come.”

About ASES:

For more than 50 years the American Solar Energy Society (ASES) has been leading national efforts to promote education, public outreach, and research about solar energy and other sustainable technologies. ASES produces the annual SOLAR 2009 conference, the National Solar Tour, Solar Today magazine, and the ASES Green Jobs Report. Please visit www.ases.org for more information.

About CONERGY:

Conergy designs, manufactures, installs and finances solar photovoltaic solutions for major commercial sectors, public agencies, businesses and homeowners through two distinct channels. Conergy’s Projects Group focuses on custom solutions for large-scale, energy-intensive enterprises; Conergy’s Distribution Group serves a national network of installers, developers and dealers in the grid-tied and off-grid residential realm, while also addressing the needs of small commercial markets. With ten years’ market prowess, Conergy has successfully deployed projects totaling over 1 Gigawatt of renewable energy capacity around the world. With operations in 15 countries over 4 continents, Conergy is driving today’s clean energy economy via the design, production, installation or financing of close to 1 in 10 of the world’s solar energy systems. Learn more at www.conergy.us.

Contacts:

Neal Lurie

American Solar Energy Society

(303) 443-3130 x105

nlurie (at) ases.org

Terri Steele

CONERGY

(720) 305-0704

t.steele (at) conergy.us

Technorati Tags: ases, solar energy society