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.”
The Environmental Protection Agency on Monday released a draft rule to regulate carbon emissions from hundreds of fossil-fired power plants across the U.S., the cornerstone of President Barack Obama's climate-change agenda. The proposed rule mandates that power plants cut U.S. carbon-dioxide emissions 30% by 2030 from levels seen in 2005, an aggressive target that marks the first attempt at limiting such pollution. The carbon framework seeks to strike a balance between what environmentalists want—an ambitious overall target—with what the utility industry wants—flexibility, a long compliance timeline and an earlier base-year calculation from which to meet the goal. Carbon emissions have dropped since 2005, making the overall reduction smaller than it would have been if the EPA had used a more-recent year for a baseline.
Not all of these technologies will make it out of the concept stage, and many are decades away from becoming practical. What may seem weird today might just be a reality in the future.
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.
Even a small farmer could join a co-op and get in on this trend. These co-ops are growing and are being promoted by organizations interested in furthering the cause of renewable energy.
We need to apply good systems engineering principles to policy creation to address the benefits gaps that confront multifamily stakeholders today.
Lithium is an essential component of batteries for small electronics and large electric vehicles as well as for materials for the housing and construction industry. In this interview with The Mining Report, economist Daniela Desormeaux, founder of signumBOX and widely quoted expert on industrial chemicals, shines a light on the lithium industry for investors looking for a new opportunity.
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.
In an almond orchard outside Turlock in the Central Valley, two large tanks hold water, minerals - and more importantly, energy. The tanks in Stanislaus County are part of a "flow battery" that stores energy from nearby solar panels. It's the largest battery of its kind in the world. And it could play a role in California's push to develop bigger and better ways to store large quantities of energy. This particular flow battery, unveiled to the public Thursday during a ceremony with state and federal officials, was built by EnerVault of Sunnyvale, part of the Bay Area's fast growing energy-storage industry. Like most of its competitors, EnerVault is young, founded in 2008, with about $30 million in venture funding to date. Some companies try to perfect the lithium-ion batteries found in laptops and electric cars. Others, including EnerVault and Primus Power of Hayward, specialize in flow batteries, which store energy in tanks of electrolytes. The fluid is then pumped through the battery's cells when power is needed. In contrast, the batteries found at a grocery store contain the electrolyte, cathode and anode all in one package. "Flow batteries are batteries turned inside out," said Jim Pape, EnerVault's chief executive officer. His company's flow batteries use iron and chromium, blended into the water inside its tanks. Both materials are safe to handle. (For those of you thinking "Erin Brockovich," EnerVault uses the kind of chromium found in multivitamins, not the infamous hexavalent chromium featured in the movie). Iron and chromium also have the benefit of being cheap.
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.
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.
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.
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.
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.
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Sonnen's mission is to provide clean and affordable energy for all. As the first mainstream grid tied residential energy storage company in the world and with 24,000 sonnenBatterie systems installed worldwide, sonnen is a proven global leader in intelligent energy management solutions. The all-in-one sonnenBatterie smart energy storage solution easily integrates with new and existing solar installations to help homes manage their energy throughout the day-saving money, providing backup power, and maximizing the effective use of solar power day and night. Sonnen has won several awards for its energy innovations, including the 2017 Zayed Future Energy Prize, MIT's Technology Review's 50 Smartest Companies in 2016, Global Cleantech 100 for 2015-2017, Greentech Media's 2016 Grid Edge Award for Innovation, and Cleantech's 2015 Company of the Year Award in both Israel and Europe.