The most efficent wind turbine

A new windmill design loosely based on Archimedes’s screw principle, aims to change this, however. A Dutch startup aptly named The Archimedes has re-worked the concept of the windmill to move away from the traditional concept of using the pressure differential between the front and rear of the device to move the rotors.   The Liam F1 Urban Wind Turbine, modeled after a Nautilus shell, measures about 1.5 meters wide and weighs 75 Kg — an ideal size for installation in a residential setting. The turbine is rated to achieve an efficiency “80 percent of the maximum that is theoretically feasible."   According to the creators, the device is designed to provide enough electricity to power an apartment or small home. “The Liam F1 generates an average of 1,500 kilowatt-hours of energy [per year] at a wind-speed of 5 m/s [16.4 ft/s], which resembles half of the power consumption of a common household.” The Liam can even adjust to wind direction, which enables it to maximize power generation even with changing conditions.   The Liam is priced at Eur 3,999 or about US$ 5,450 and will start retailing by July 1st. The Archimedes says it has sold 7,000 units in 14 countries so far. The company says it has undertaken field tests for efficiency and power generation “over 50 times,” in which it has achieved its rated output and efficiency.  

Making Solar Panels in China Takes Lots of Dirty Energy

Manufacturing solar panels can be a dirty business, from the mining of raw materials to the chemical-laced process of purifying silicon to the assembly of silicon wafers.   Solar energy is a renewable source, of course, but it’s essential to examine the full supply chain to gauge its total environmental impact. One potential concern is the use, containment, and disposal of toxic chemicals. Another is the energy-efficiency of the manufacturing process and the source of the energy used.   Researchers at Northwestern University and the U.S. Department of Energy’s Argonne National Laboratory recently examined the solar panel production process in different locations and published their findings in the July issue of the journal Solar Energy. “We estimated that a solar panel’s carbon footprint is about twice as high when made in China and used in Europe, compared to those locally made and used in Europe,” says Fengqi You, a co-author of the paper and an assistant professor of chemical and biological engineering at Northwestern. “While it might be an economically attractive option to move solar panel manufacturing from Europe to China, it is actually less sustainable from the life cycle energy and environmental perspective.”   The primary differences, the researchers found, are the less stringent enforcement of environmental regulations in China coupled with the country’s more coal-dependent power sector. “It takes a lot of energy to extract and process solar-grade silicon,” says co-author Seth Darling. “And in China, that energy tends to come from dirtier and less efficient energy sources than it does in Europe.”

Intersolar North America 2014 - Special News Report

News announcements from show. Open for exhibitors - publish your news here.

Powering NASA'S Off-grid Operations

Planetary Power's HyGen is a complete reinvention of the diesel generator that combines innovations in renewable energy, battery storage and engine efficiency for a robust power generation platform.

Learn About Three New Finance Models for Non-Profits Wanting to Go Solar

REC Solar has developed new solar financing partnerships that are tailored to the needs of non-profits, such as churches, hospitals, HOA's, and charitable organizations.

Energy Star Certified Homes in the US

Texas leads the ENERGY STAR certified homes in 2013 and continuing its leading position in Q1 2014.

U.S. Residential Solar PV Installations Exceeded Commercial Installations for the First Time in Q1 2014

Driven by strong year-over-year growth in the utility and residential markets, the United States installed 1,330 megawatts of solar photovoltaics (PV) in the first quarter of 2014. According to GTM Research and the Solar Energy Industry Association’s (SEIA) Q1 2014 U.S. Solar Market Insight Report , the U.S. installed 232 megawatts of residential PV, exceeding the non-residential (commercial) market’s 225 megawatts for the first time in the history of the report. Ongoing strength in the residential sector and volatility in the non-residential market spurred this historic milestone. Despite the dip in non-residential installations, GTM Research and SEIA expect the market to rebound and exceed the residential market in 2014 annual PV installations. In another significant development, Q1 2014 was the largest quarter ever for concentrating solar power (CSP) due to the completion of the 392 megawatt (AC) Ivanpah project and the Genesis Solar project’s second 125 megawatt (AC) phase. With a total of 857 megawatts expected to be completed by year’s end, 2014 is on pace to be the largest year for CSP in history. “Solar accounted for 74% of all new U.S. electric capacity installed in Q1 2014, further signaling the rapidly increasing role that solar is playing in the energy market,” said Shayle Kann, Senior Vice President at GTM Research. “Expect to see a resurgence in the non-residential market, combined with continued incremental residential growth, throughout the rest of this year.” Not to be outshone by the success of the residential sector, the utility PV market continued its dominance, growing 171% between Q1 2013 and Q1 2014. With 873 megawatts installed, it accounted for two-thirds of total installations during the quarter. Large-scale projects that were under contracts and negotiations between 2010 and 2012 are now becoming a reality.

Nearly 5,600 Clean Energy Jobs Announced In First Quarter, Down From Same Period In 2013

Congressional inaction on key clean energy tax policies, coupled with attacks on state renewable energy programs, led to a dramatic decline in clean energy job announcements in the first quarter of this year, according to the latest report from the nonpartisan business group Environmental Entrepreneurs (E2). About 5,600 clean energy and clean transportation jobs were announced in the first three months of this year, down from 12,000 such jobs reported in the comparable period in 2013. A major geothermal project in  Idaho  accounted for the most clean energy jobs announced on the state level in the first quarter. Idaho  was followed by more traditional clean energy leaders. The remaining states in the Top 10 were:  Texas ,  California , Missouri ,  New York ,  Kansas ,  Arizona ,  Hawaii ,  New Mexico  and  Louisiana ..  Despite adding thousands of new jobs to the economy, the dramatic drop in clean energy and clean transportation job announcements in the quarter is a clear reflection of mixed signals American businesses  are getting from Capitol Hill and state capitals when it comes to policies such as the federal Production Tax Credit (PTC) and various state-level renewable energy standards (RES), according to E2.

Solar PV Module Shipments to Grow 30 Percent in 2014, According to NPD Solarbuzz

The top 20 module suppliers to the solar photovoltaic (PV) industry are guiding an increase in annual shipments of more than 30 percent in 2014, according to the latest NPD Solarbuzz Module Tracker Quarterly report. Leading Chinese module suppliers Trina Solar, Canadian Solar, ReneSola and Jinko Solar are forecasting the most aggressive growth in shipments during 2014, with the upper-end of guidance exceeding 40 percent.  "The top-20 module suppliers to the PV industry account for two-thirds of global shipments, and they provide the leading indicators of industry growth and pricing trends," noted Ray Lian, senior analyst at NPD Solarbuzz. "Assuming the leading suppliers achieve the forecasted growth rates, end-market demand in 2014 will approach 50 gigawatts."  Yingli Green Energy is forecasting the highest shipment volume in 2014, with the upper end of shipments at 4.2 gigawatts (GW). This shipment level would result in Yingli Green Energy heading the annual shipment rankings for PV suppliers for the third consecutive year.  Leading Japanese silicon-based PV module suppliers, Sharp Solar and Kyocera, are forecasting a 15 percent increase in shipments in 2014, reflecting continued strength in the Japanese solar PV market. Sharp Solar and Kyocera command strong market shares, within their domestic markets. 

Elon Musk sees nearly unlimited demand for energy storage

Tesla Motors CEO Elon Musk said Wednesday that the world will need to build several lithium-ion battery factories to meet a "quasi-infinite demand for energy storage." Speaking at the World Energy Innovation Forum, Musk said Tesla Motors alone needs its planned $5 billion lithium battery factory to continue the company's rapid growth. Without the proposed "gigafactory" the electric-car maker would lack the batteries it needs to ramp up car production and introduce new models, he said. "We're building the gigafactory because we can't think of any other way to scale," Musk told the energy forum at the company's factory in Fremont. "We either hit the sides of the Petri dish, or we build a bigger Petri dish." The forum, which focused on market-transforming ideas in energy, took place in a corner of the sprawling auto plant where Tesla makes its second car model, the Model S. The proposed gigafactory would double worldwide production of lithium-ion batteries, which could help lower battery production costs 30 percent just in its first year of full-scale operation. Tesla hopes to use those savings to create its $35,000 Gen 3 car, the company's first car aimed at the middle class.

U.S. Wind Industry First Quarter 2014 Market Report

The U.S. now has an installed wind capacity of 61,327 MW. There are over 13,000 MW currently under construction, an industry record.

Vocational Training for the Renewable Energy Industry

We are preparing our students for the careers of today and tomorrow. It may seem controversial to say but the truth is not everyone needs a college degree.

California Dreamin' Makes Hydrogen Future a Reality

Until the throughput at these stations increases with automakers rollout of their FCEVs in larger amounts, the state's subsidies and funding support are crucial and have helped make California an example to the world on how to move forward towards a cleaner transportation future.

Case Study - Windward Nazarene Bay View Golf Course

In total, the site connected 5 systems to 5 meters in order to generate over 85% of the net energy needed by the course.

Moving from Silicon Solar Cells to Thin Films - Studying the Changing Face of Solar Power

Though silicon cells dominate the current chapter of the solar power industry, the efficiency and cost effectiveness of thin film cells will surely succeed in the times to come to build a better environment, while fulfilling the energy needs of the consumers and industry.

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Solar & Wind - Featured Product

OMG Roofing Products  - PowerGrip Universal

OMG Roofing Products - PowerGrip Universal

Eliminate Solar Rack Ballast and Reduce Rooftop Material Handling. PowerGrip™ Universal (PGU) is a commercial roof mount system designed to secure solar racks and other equipment to any type of commercial roofing system. PGU provides a secure connection directly to the roof deck or structural members and is designed to reduce or eliminate ballast in solar racking systems, so there's less weight on the roof and less material handling. Made of heavy-duty cast aluminum, PGU units include a base ring which is secured through the roofing cover and into the structural roof deck, and a waterproof top plate.