Engineering a better solar cell: UW research pinpoints defects in popular perovskites
One of the fastest-growing areas of solar energy research is with materials called perovskites. These promising light harvesters could revolutionize the solar and electronics industries because they show potential to convert sunlight into electricity more efficiently and less expensively than today’s silicon-based semiconductors.
These superefficient crystal structures have taken the scientific community by storm in the past few years because they can be processed very inexpensively and can be used in applications ranging from solar cells to light-emitting diodes (LEDs) found in phones and computer monitors.
A new study published online April 30 in the journal Science by University of Washington and University of Oxford researchers demonstrates that perovskite materials, generally believed to be uniform in composition, actually contain flaws that can be engineered to improve solar devices even further. Cont'd...
Kyocera TCL Solar Inaugurates Floating Mega Solar Power Plants in Hyogo Prefecture, Japan
1.7MW and 1.2MW installations will provide equivalent power for roughly 920 average households.
Interview with Neil Fromer, Executive Director, Caltech Resnick Sustainability Institute
We have researchers here developing systems that should be able to convert more than 40% of the incoming sunlight to electricity (current panels are ~20% efficient). We are also working with research groups that can generate fuels and chemicals directly form sunlight, or from biomass, hopefully at an efficiency and cost that will replace conventional fossil fuel materials.
First Offshore Wind Farm In The U.S. Kicks Off Construction
Offshore wind is coming to the United States.
Construction on what will be the country’s first offshore wind farm started Monday in Rhode Island. The wind farm, which is being developed by Deepwater Wind, will be located off of the coast of Block Island, a small island about 13 miles south of Rhode Island. Once completed, the five-turbine, 30-megawatt wind farm will produce enough energy to power all homes and businesses on Block Island, which previously relied on diesel generators, according to the Sierra Club. The wind farm will also send energy to mainland Rhode Island. It’s expected to come online in fall 2016.
Environmental groups, many of which have pushed for the project since it started going through hearings in 2013, applauded the start of construction. Bruce Nilles, senior campaign director for the Sierra Club’s Beyond Coal Campaign, told ThinkProgress that the start of construction was a “landmark” moment for the U.S. wind industry, and that it “really makes real the promise offshore wind has” in the U.S., particularly on the East Coast.
“This is technology that will play a very important part in decarbonizing electric sector,” he said.
A Guide to Safely Installing Solar Panel Arrays to Any Property Type
As the world continues to shift towards alternative energy sources, solar power will only continue to grow. Technologies will come and go and the astute product providers will continue to innovate.
Can We Save Energy with Vehicle Tires?
Tires may seem to be an unlikely eco-product. But, according to a new market report from Smithers Rapra, the global market for "green tires" will reach $70.6 billion by 2017 or 28% of the total tire market.
'Mega' floating solar power plants open in Japan
Two floating solar power plants capable of providing electricity for 1,000 homes have been completed in Japan.
The latest such "mega-plants" at Nishihira and Higashihira Ponds in Kato City are the work of electronics giant Kyocera Corporation and Century Tokyo Leasing Corporation, and took just seven months to install. The plant's 11,250 modules are expected to generate 3,300 megawatt hours (MWh) every year.
According to Kyocera, besides being typhoon-proof (due to their sturdy, high-density polyethylene and array design) floating solar plants are superior to their land-based equivalents because of the cooling effect of the water, which allows them to function more efficiently. Reservoirs are also an ideal location because the panels produce shade, which reduces water evaporation and promotes algae growth. A report by Korea Water Resources Corporation found that the lower temperatures of the floating modules mean they are 11 percent more efficient than land-based equivalents. The report identified unsolved issues with the plants, too, however. It said the study had to discard data collected when the panels moved in the wind, and said research into new mooring systems was "continually needed".
MIT invention uses solar power to make ocean water drinkable
USAID recently announced the winners of the Desal Prize, part of a competition to see who could create an affordable desalination solution for developing countries. The idea was to create a system that could remove salt from water and meet three criteria: it had to be cost-effective, environmentally sustainable, and energy efficient.
The winners of the $125,000 first prize were a group from MIT and Jain Irrigation Systems. The group came up with a method that uses solar panels to charge a bank of batteries. The batteries then power a system that removes salt from the water through electrodialysis. On the most basic level, that means that dissolved salt particles, which have a slight electric charge, are drawn out of the water when a small electrical current is applied. In addition to getting rid of salt (which makes water unusable for crops and for drinking), the team also applied UV light to disinfect some of the water as it passed through the system.
Using the sun instead of fossil fuels to power a desalination plant isn't a totally new idea. Larger solar desalination plants are being seriously investigated in areas where water is becoming a scarce resource, including Chile and California. While proponents hope to eventually could provide water to large numbers of people, the technology is still expensive (though prices are dropping) and requires a lot of intricate technology.
The Schneider Electric Smart Grid (SESG) Laboratory
The SESG Lab can replicate the operation of a substation and feeders of an electrical utility distribution system, thanks to its core infrastructure that supports organizations in the research and development of leading edge solutions and systems pertaining to smart grid technology.
ALTER EOLIA - Stackable Mini Wind Turbines
They can be installed on building roofs or stack at variable heights without a mast and without foundation. They are 100% removable, 100% silent, 100% recyclable and maintenance free.
Here's Why Apple Is Building Solar Farms in China
Apple just agreed to back two large solar farms in China. It’s the biggest deal of its kind for a U.S. company operating in China. For China, the deal is only a beginning.
China has been installing more renewable-power capacity than fossil fuels for several years, a gap that's growing. In 2015, China will install 15 gigawatts to 18 gw of solar power alone, double the solar deployment in the U.S., according to an analysis by Bloomberg New Energy Finance (BNEF).
The chart shows how, in the next 15 years, China is on track to have more low-carbon electricity than the entire capacity of the U.S. power grid. "Think of what their grid will look like in 2030," Michael Liebreich, founder of BNEF, said at the organization's annual summit last week in New York. "A very competitive advantage."
For Apple, the 40-megawatt partnership extends Chief Executive Officer Tim Cook's solar aspirations beyond U.S. borders. Cook announced an $850 million deal in February to purchase enough solar to power all its California operations: stores, offices, headquarters, and a data center. By making a similar push in China, the tech giant begins to offset its considerable manufacturing pollution, which is almost entirely overseas.
Many U.S. tech giants—not just Apple—have been criticized for outsourcing their pollution, says Justin Wu, head of Asia research for BNEF. Apple is "hitting back at that whole line of arguments," he says. "This is the beginning of something. Manufacturing in China is going to get greened."
Improving Solar Tracker Performance With SMARTracking™
This case study is based on a real project in South West France. Results have been validated by an independent third party.
Toshiba Begins Operation of Independent Energy Supply System Utilizing Renewable Energy and Hydrogen
Toshiba Corporation announced the start of demonstration operation of H2One, an independent energy supply system based on renewable energy and use of hydrogen as a fuel for power generation. Kawasaki City and Toshiba have installed the system at the Kawasaki Marien public facility and Higashi-Ogishima-Naka Park in the Kawasaki Port area.
H2One combines photovoltaic installations, storage batteries, hydrogen-producing water electrolysis equipment, hydrogen and water tanks, and fuel cells. Electricity generated from the photovoltaic installations is used to electrolyze water and produce hydrogen, which is then stored in tanks and used in fuel cells that produce electricity and hot water.
Since H2One uses only sunlight and water for fuel, it can independently provide electricity and hot water in times of emergency, even when lifelines are cut. Kawasaki Marien and Higashi-Ogishima-Naka Park, a municipal facility to promote Kawasaki Port, is a designated emergency evacuation area. In times of disaster, H2One will use stored hydrogen to provide an estimated 300 evacuees to the site with electricity and hot water for about one week. The H2One system is housed in a container, and can be transported to disaster-hit areas on trailers.
Top 5 Richest Tycoons in Renewable Energy
The growth of the solar industry is truly astounding, particularly in China, the world’s solar leader. Between 2011 and 2012 the Chinese solar market grew by 500 percent. According to a 2014 report by Frost & Sullivan, a consulting firm, the global solar market earned revenues of nearly $60 billion in 2013. The firm estimates that by 2020 it will double to $137.2 billion.
With all this growth, somebody was obviously going to get rich, and it didn’t take long for Oilprice.com to identify some of the biggest beneficiaries of the push toward renewables. The following are 5 of the world’s most successful renewable energy business leaders and their net worth.
1. Li Hejun, Chairman, Hanenergy Holdings. $31.5 billion.
2. Elon Musk, Founder/CEO, Space Exploration Technologies Corp., Tesla Motors. $12.2 billion.
3. Wang Chuanfu, Founder, BYD Company. $5.3 billion.
4. Aloys Wobben, Founder/Owner, Enercon. $4.2 billion.
5. Zhu Gongshan, Chairman, GCL-Poly Energy Holdings.
Full Article:
Solar Energy Index Outperforms S&P in Q1 2015
Similar to the S&P 500 Index, the Solar Stock Index is a market cap weighted composite index.
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