Saturday, May 23, 2015Register

The George R. Brown Convention Center

The George R. Brown Convention Center (GRB) Solar Pilot Program, managed by the Houston Advanced Research Center (HARC) is part of the Solar Houston Initiative (SHI), a Department of Energy (DOE) Solar America Cities (SAC) program. The DOE SAC program is a federal program to accelerate the adoption of solar energy technologies for a cleaner, more secure energy future. Sponsorship and funding for the GRB Solar Pilot Program was provided by the City of Houston, GRB, HARC, Houston Endowment Inc., Standard Renewable Energy (SRE), The American Institute of Architects, Houston Architecture Foundation, BP and CenterPoint Energy.

The system consists of  51.3 kW DC STC crystalline module array  and a 49.0 kW DC STC amorphous thin film array. The crystalline module array consists of 270 BP modules, rated at 190 watt (W) DC STC, located on the I-beam along the south side of the building, mounted on supports painted to match the color of the existing beams. The amorphous silicon (a-Si) thin film array consists of 360 Uni-Solar Photovoltaic (PV) flexible thin film panels, rated at 136 W DC STC, installed on the southern portion of the GRB roof adhered with Green Lock membrane adhesive. Each array is connected to a Satcon Photovoltaic PowerGate Plus 50 kW 480V 3ph 60Hz Nema 3R inverter system (Model # PVS-50-4UL-10 Years). The inverters are connected to the building’s electrical distribution system.   

 

Discovery Green

 

 

Green Building Resource Center


American energy use up slightly, carbon emissions almost unchanged
Americans' energy use continued to grow slowly in 2014, fueled by increases in the use of natural gas, wind and solar, according to the most recent energy flow charts.<img src="http://feeds.feedburner.com/~r/sciencedaily/matter_energy/solar_energy/~4/Cm9zj0EI59U" height="1" width="1" alt=""/>

Nanobionics supercharge photosynthesis
A new process has been developed for spontaneously incorporating and assembling carbon nanotubes and oxygen-scavenging nanoparticles into chloroplasts, the part of plant cells that conduct photosynthesis. Incorporation enhanced electron flow associated with photosynthesis. When these nanocomposites were incorporated into leaf chloroplasts of living plants, the electron flow associated with photosynthesis was enhanced by 30%.<img src="http://feeds.feedburner.com/~r/sciencedaily/matter_energy/solar_energy/~4/7GzdrkuVGi8" height="1" width="1" alt=""/>

Efficiency record for black silicon solar cells jumps to 22.1%
Researchers have obtained the record-breaking efficiency of 22.1 percent efficiency on nanostructured silicon solar cells. An almost 4 percent absolute increase to their previous record was achieved by applying a thin passivating film on the nanostructures and by integrating all metal contacts on the back side of the cell.<img src="http://feeds.feedburner.com/~r/sciencedaily/matter_energy/solar_energy/~4/8xijDRyJFmg" height="1" width="1" alt=""/>

Artificial photosynthesis: New, stable photocathode with great potential
Scientists have developed a new composite photocathode for generating hydrogen using sunlight. The photocathode consists of a thin film of chalcopyrite coated with a newly developed thin film of titanium dioxide containing platinum nanoparticles. This layer protects the chalcopyrite thin film from corrosion, it acts as a catalyst to speed-up formation of hydrogen even shows photoelectric current density and voltage comparable to those of a chalcopyrite-based thin film solar cell.<img src="http://feeds.feedburner.com/~r/sciencedaily/matter_energy/solar_energy/~4/RBZD81NBc7o" height="1" width="1" alt=""/>

Superhydrophobic glass coating offers clear benefits
A moth's eye and lotus leaf were the inspirations for an antireflective water-repelling, or superhydrophobic, glass coating that holds significant potential for solar panels, lenses, detectors, windows, weapons systems and many other products.<img src="http://feeds.feedburner.com/~r/sciencedaily/matter_energy/solar_energy/~4/oHCautfhB0Q" height="1" width="1" alt=""/>

Inkjet printing process for kesterite solar cells
A research team has developed an inkjet printing technology to produce kesterite thin film absorbers. Based on the inkjet-printed absorbers, solar cells with total area conversion efficiency of up to 6.4 percent have been achieved. Although this is lower than the efficiency records for this material class, the inkjet printing minimizes waste and has huge advantages for industrial production.<img src="http://feeds.feedburner.com/~r/sciencedaily/matter_energy/solar_energy/~4/o0S8XjjOURg" height="1" width="1" alt=""/>

First field-effect transistors on hybrid perovskites fabricated for first time
Researchers have fabricated halide organic-inorganic hybrid perovskite field-effect transistors and measure their electrical characteristics at room temperature for the first time. Hybrid perovskites are a family of crystalline materials that hold great promise in the clean energy world.<img src="http://feeds.feedburner.com/~r/sciencedaily/matter_energy/solar_energy/~4/H2eGWzKxF5w" height="1" width="1" alt=""/>

Better battery for storing solar energy?
The sun is a huge source of energy. In just one hour planet Earth is hit by so much sunshine that humankind could cover its energy needs for an entire year if only we knew how to harvest and save it. But storing sunshine is not trivial. Now a student has researched his way to a breakthrough which may prove pivotal for technologies trying to capture the energy of the sun, and saving it for a rainy day.<img src="http://feeds.feedburner.com/~r/sciencedaily/matter_energy/solar_energy/~4/yLDdNxEx4mo" height="1" width="1" alt=""/>

Engineering a better solar cell: Defects in popular perovskites pinpointed
A new study demonstrates that perovskite materials - superefficient crystal structures that have recently taken the scientific community by storm - contain flaws that can be engineered to improve solar cells and other devices even further.<img src="http://feeds.feedburner.com/~r/sciencedaily/matter_energy/solar_energy/~4/Rjt8LbxVWXE" height="1" width="1" alt=""/>

Artificial photosynthesis could help make fuels, plastics and medicine
The global industrial sector accounts for more than half of the total energy used every year. Now scientists are inventing a new artificial photosynthetic system that could one day reduce industry's dependence on fossil fuel-derived energy by powering part of the sector with solar energy and bacteria. The system converts light and carbon dioxide into building blocks for plastics, pharmaceuticals and fuels -- all without electricity.<img src="http://feeds.feedburner.com/~r/sciencedaily/matter_energy/solar_energy/~4/PWo5ElG3rS4" height="1" width="1" alt=""/>

Electrical power converter allows grid to easily accept power from renewable energy
Engineering researchers have invented a novel electrical power converter system that simultaneously accepts power from a variety of energy sources and converts it for use in the electrical grid system.<img src="http://feeds.feedburner.com/~r/sciencedaily/matter_energy/solar_energy/~4/9AxB8heeHOQ" height="1" width="1" alt=""/>

A video camera that powers itself
Scientists have invented a prototype video camera that is the first to be fully self-powered -- it can produce an image each second, indefinitely, of a well-lit indoor scene. They designed a pixel that can not only measure incident light but also convert the incident light into electric power.<img src="http://feeds.feedburner.com/~r/sciencedaily/matter_energy/solar_energy/~4/thvg5JvmRJs" height="1" width="1" alt=""/>

Harvesting energy from electromagnetic waves
Researchers have developed a novel design for electromagnetic energy harvesting based on the "full absorption concept." This involves the use of metamaterials that can be tailored to produce media that neither reflects nor transmits any power -- enabling full absorption of incident waves at a specific range of frequencies and polarizations.<img src="http://feeds.feedburner.com/~r/sciencedaily/matter_energy/solar_energy/~4/rBIMmCycMAI" height="1" width="1" alt=""/>

California's solar incentive program has had only modest impact on adoption rates
According to a new analysis, California's aggressive incentive program for installing rooftop solar-electric systems has not been as effective as generally believed.<img src="http://feeds.feedburner.com/~r/sciencedaily/matter_energy/solar_energy/~4/961APCEWNvo" height="1" width="1" alt=""/>

Shifts in electricity generation spur net job growth, but coal jobs decline
In four years following the 2008 recession, the US coal industry lost more than 49,000 jobs, while the natural gas, solar, and wind industries together created nearly four times that amount, according to a new. Few of the new jobs were added in states hardest hit by coal's decline, particularly West Virginia and Kentucky.<img src="http://feeds.feedburner.com/~r/sciencedaily/matter_energy/solar_energy/~4/U2st8IkytWA" height="1" width="1" alt=""/>

Battery energy storage project shows promise for electricity network
Scientists have revealed the potential of a new battery energy storage system to reduce electricity prices while improving power efficiency and quality.<img src="http://feeds.feedburner.com/~r/sciencedaily/matter_energy/solar_energy/~4/4qavp7IT5K4" height="1" width="1" alt=""/>

Solar cooling system keeps water at 9 degrees Celsius for up to three months
Maintaining food in places where high temperatures prevail, using little energy at a low cost,  it is now possible with new technology, thanks to the creation of a solar cooling system.<img src="http://feeds.feedburner.com/~r/sciencedaily/matter_energy/solar_energy/~4/P_GlfR_fwB4" height="1" width="1" alt=""/>

Wrapping carbon nanotubes in polymers enhances their performance
Scientists say polymer-wrapped carbon nanotubes hold much promise in biotechnology and energy applications.<img src="http://feeds.feedburner.com/~r/sciencedaily/matter_energy/solar_energy/~4/yDqgr6eX574" height="1" width="1" alt=""/>

New kind of 'tandem' solar cell: Two types of photovoltaic material combined to make a cell that harnesses more sunlight
Researchers have developed a new kind of solar cell that combines two different layers of sunlight-absorbing material in order to harvest a broader range of the sun's energy. The development could lead to photovoltaic cells that are more efficient than those currently used in solar-power installations, the researchers say. The new cell uses a layer of silicon -- which forms the basis for most of today's solar panels -- but adds a semi-transparent layer of a material called perovskite, which can absorb higher-energy particles of light. Unlike an earlier "tandem" solar cell reported by members of the same team earlier this year -- in which the two layers were physically stacked, but each had its own separate electrical connections -- the new version has both layers connected together as a single device that needs only one control circuit.<img src="http://feeds.feedburner.com/~r/sciencedaily/matter_energy/solar_energy/~4/iwOf8uythao" height="1" width="1" alt=""/>

Discovery could yield more efficient portable electronics, solar cells
A team of chemists has set the stage for more efficient and sturdier portable electronic devices and possibly a new generation of solar cells based on organic materials.<img src="http://feeds.feedburner.com/~r/sciencedaily/matter_energy/solar_energy/~4/87r4aMkCqhI" height="1" width="1" alt=""/>

Airships: The future of aviation?
Researchers have completed a three year investigation into stratospheric passenger airships as part of a multi-national engineering project designed to provide a future sustainable air transport network.<img src="http://feeds.feedburner.com/~r/sciencedaily/matter_energy/solar_energy/~4/WQZ91QFMmq4" height="1" width="1" alt=""/>

Towards 'printed' organic solar cells and LEDs
Flexible optoelectronic devices that can be produced roll-to-roll -- much like newspapers are printed -- are a highly promising path to cheaper devices such as solar cells and LED lighting panels. Scientists have now created prototype flexible solar cell modules as well as novel silver-based transparent electrodes that outperform currently used materials.<img src="http://feeds.feedburner.com/~r/sciencedaily/matter_energy/solar_energy/~4/b4jymNuNdek" height="1" width="1" alt=""/>

A new method for making perovskite solar cells
Researchers have come up with a new way of making thin perovskite films for solar cells. The method forms perovskite crystals at room temperature, which could be helpful in mass production settings. The technique is especially well suited to make ultra-thin, semitransparent films, which could be used in photovoltaic windows.<img src="http://feeds.feedburner.com/~r/sciencedaily/matter_energy/solar_energy/~4/3grUZ_v2QTA" height="1" width="1" alt=""/>

Scientists move closer to 'two for one deal' on solar cell efficiency
The underlying mechanism behind an enigmatic process called 'singlet exciton fission,' which could enable the development of significantly more powerful solar cells, has been identified by scientists in a new study.<img src="http://feeds.feedburner.com/~r/sciencedaily/matter_energy/solar_energy/~4/SUttSS0_8tU" height="1" width="1" alt=""/>

Solar could meet California energy demand three to five times over
In the face of global climate change, increasing the use of renewable energy resources is one of the most urgent challenges facing the world. New work finds that the amount of energy that could be generated from solar equipment constructed on and around existing infrastructure in California would exceed the state's demand by up to five times.<img src="http://feeds.feedburner.com/~r/sciencedaily/matter_energy/solar_energy/~4/HwNnfrdk5Og" height="1" width="1" alt=""/>

Uncovering the secrets of super solar power perovskites
In a scant five years of development, hybrid perovskite solar cells have attained power conversion efficiencies that took decades to achieve with the top-performing conventional materials, but scientists have lacked a clear understanding of the precise goings on at the molecular level. New findings help fill that void.<img src="http://feeds.feedburner.com/~r/sciencedaily/matter_energy/solar_energy/~4/RlYEhfO4aaA" height="1" width="1" alt=""/>

Solar cells: Increased pressure creates a happy union
By tailoring the interface between the two sections of a solar cell, researchers have produced a high-performance solar cell from the abundant and cheap materials of copper (II) oxide and silicon.<img src="http://feeds.feedburner.com/~r/sciencedaily/matter_energy/solar_energy/~4/CvAmHNL2prw" height="1" width="1" alt=""/>

New approach combines biomass conversion, solar energy conversion
A new approach to combine solar energy conversion and biomass conversion has been presented by researchers. These are two important research areas for renewable energy, they say.<img src="http://feeds.feedburner.com/~r/sciencedaily/matter_energy/solar_energy/~4/Pq6gRInzmgo" height="1" width="1" alt=""/>

The global energy challenge: One billion people have no access to electricity
More than one billion people world-wide have no access to electricity to cook food or light their homes, despite the technology being in place. A study on options for getting more electrical access has taken place in Bangladesh.<img src="http://feeds.feedburner.com/~r/sciencedaily/matter_energy/solar_energy/~4/mUfCNEFEykM" height="1" width="1" alt=""/>

Reducing greenhouse gas emissions with a more effective carbon capture method
Trapping carbon dioxide (CO2) emissions from power plants and various industries could play a significant role in reducing greenhouse gas emissions in the future. But current materials that can collect CO2 -- from smokestacks, for example -- have low capacities or require very high temperatures to work. Scientists are making progress toward a more efficient alternative that could help make carbon capture less energy intensive.<img src="http://feeds.feedburner.com/~r/sciencedaily/matter_energy/solar_energy/~4/B7Wm_BoIs_8" height="1" width="1" alt=""/>

Solar cells to get growth boost, price cut
Researchers have found that growing a type of film used to manufacture solar cells in ambient air gives it a growth boost. The finding could make manufacturing solar cells significantly cheaper.<img src="http://feeds.feedburner.com/~r/sciencedaily/matter_energy/solar_energy/~4/N0jJzCT5ycY" height="1" width="1" alt=""/>

Researchers discover new material to produce clean energy
Researchers have created a new thermoelectric material, intended to generate electric power from waste heat -- from a vehicle tailpipe, for example, or an industrial smokestack -- with greater efficiency and higher output power than currently available materials.<img src="http://feeds.feedburner.com/~r/sciencedaily/matter_energy/solar_energy/~4/U7eFfSjQFFM" height="1" width="1" alt=""/>

First in-depth look at solar project completion timelines
The Energy Department's National Renewable Energy Laboratory has gathered and analyzed data for more than 30,000 solar photovoltaic installations across the United States to better understand how interconnection regulations align with actual project completion timelines. The findings indicate that interconnection process delays are common, and can range from several days to months. Streamlining the application review and final authorization processes can ultimately benefit utilities and solar consumers by reducing the time and cost associated with going solar.<img src="http://feeds.feedburner.com/~r/sciencedaily/matter_energy/solar_energy/~4/TlBhCXep2Oc" height="1" width="1" alt=""/>

Advancing solar power in Hawaii
Inverter load rejection overvoltage tests have proven so successful in Hawaii that a testing partner, Hawaiian Electric Companies, has proposed to double its hosting capacity for solar energy.<img src="http://feeds.feedburner.com/~r/sciencedaily/matter_energy/solar_energy/~4/L7_uBjjvEsY" height="1" width="1" alt=""/>

Blend of polymers could one day make solar power lighter, cheaper and more efficient
Scientists are reporting advances on how to one day make solar cells stronger, lighter, more flexible and less expensive when compared with the current silicon or germanium technology on the market.<img src="http://feeds.feedburner.com/~r/sciencedaily/matter_energy/solar_energy/~4/tqMQaAaCRbw" height="1" width="1" alt=""/>

Supersonic electrons could produce future solar fuel
Researchers have taken a step closer to producing solar fuel using artificial photosynthesis. In a new study, they have successfully tracked the electrons’ rapid transit through a light-converting molecule.<img src="http://feeds.feedburner.com/~r/sciencedaily/matter_energy/solar_energy/~4/wKojBwyb2FA" height="1" width="1" alt=""/>

Energy use in buildings: Innovative, lower cost sensors and controls yield better energy efficiency
Buildings are responsible for about 40 percent of the energy consumed in the United States. Studies indicate that advanced sensors and controls have the potential to reduce the energy consumption of buildings by 20-30 percent.<img src="http://feeds.feedburner.com/~r/sciencedaily/matter_energy/solar_energy/~4/TvzfgRI91Gw" height="1" width="1" alt=""/>

Magnetic nanoparticles enhance performance of solar cells
Magnetic nanoparticles can increase the performance of solar cells made from polymers -- provided the mix is right. Adding about one per cent of such nanoparticles by weight makes the solar cells more efficient, according to new findings.<img src="http://feeds.feedburner.com/~r/sciencedaily/matter_energy/solar_energy/~4/IAUHY9dMFsg" height="1" width="1" alt=""/>

Researchers enable solar cells to use more sunlight
Scientists report progress in photovoltaic research: they have improved a component that will enable solar cells to use more energy of the sun and thus create a higher current.<img src="http://feeds.feedburner.com/~r/sciencedaily/matter_energy/solar_energy/~4/oVEpiwBQ3m0" height="1" width="1" alt=""/>

Using 'fuzzy logic' to optimize hybrid solar/battery systems
A group of researchers in Tunisia and Algeria show how fuzzy logic has helped them create an ideal photovoltaic system that obeys the supply-and-demand principle and its delicate balance. They have now described this new sizing system of a solar array and a battery in a standalone photovoltaic system.<img src="http://feeds.feedburner.com/~r/sciencedaily/matter_energy/solar_energy/~4/HcL8lnq-EIQ" height="1" width="1" alt=""/>

Detecting defects at the nanoscale will profit solar panel production
New research may lead to major efficiency gains and cost savings in the manufacture of flexible solar panels. The goal is to develop new technologies for the detection, cleaning and repair of micro and nanoscale defects in thin films that are vital in products such as printed electronics and solar panels.<img src="http://feeds.feedburner.com/~r/sciencedaily/matter_energy/solar_energy/~4/axBR7f9wvXs" height="1" width="1" alt=""/>

Hydropower completes greening of Norway
The Norwegian energy supply can be sustainable by 2030, according to new research, as long as politicians keep their promises, authors say, after analyzing the development potential of the Norwegian energy system to find out how it could be made more sustainable. <img src="http://feeds.feedburner.com/~r/sciencedaily/matter_energy/solar_energy/~4/XRMmNpWpN5g" height="1" width="1" alt=""/>

Cheap solar cells made from shrimp shells
Researchers have successfully created electricity-generating solar-cells with chemicals found the shells of shrimps and other crustaceans for the first time.<img src="http://feeds.feedburner.com/~r/sciencedaily/matter_energy/solar_energy/~4/d8X2rtCYbxw" height="1" width="1" alt=""/>

Semiconductor works better when hitched to graphene
Graphene -- a one-atom-thick sheet of carbon with highly desirable electrical properties, flexibility and strength -- shows great promise for future electronics, advanced solar cells, protective coatings and other uses, and combining it with other materials could extend its range even further.<img src="http://feeds.feedburner.com/~r/sciencedaily/matter_energy/solar_energy/~4/-3jZX4XSfbI" height="1" width="1" alt=""/>

Hybrid perovskite nanoparticles with 80% luminescence yield obtained
Researchers have developed a method for preparing methylammonium-lead bromide hybrid nanoparticles with extraordinary luminescence. They have successfully increased the luminescence efficiency of nanoparticles up to 80% and has also proven their high stability under ultraviolet visible light.<img src="http://feeds.feedburner.com/~r/sciencedaily/matter_energy/solar_energy/~4/2DOyzgrLACI" height="1" width="1" alt=""/>

Construction of the world's biggest solar telescope
With a four-meter diameter primary mirror, the telescope will be able to pick up unprecedented detail on the surface of the Sun -- the equivalent of being able to examine a coin from 100 kms away. It will address fundamental questions at the core of contemporary solar physics. It will do this via high-speed (sub-second timescales) spectroscopic and magnetic measurements of the solar photosphere, chromosphere and corona.<img src="http://feeds.feedburner.com/~r/sciencedaily/matter_energy/solar_energy/~4/o1jPTe2tWGE" height="1" width="1" alt=""/>

Bionic leaf: Researchers use bacteria to convert solar energy into liquid fuel
Solar energy can be harnessed using electricity from photovoltaic cells to yield hydrogen that can be stored in fuel cells. But hydrogen has failed to catch on as a practical fuel for cars or for power. Converting solar energy into liquid fuel could accelerate its adoption as a power source.<img src="http://feeds.feedburner.com/~r/sciencedaily/matter_energy/solar_energy/~4/58E-uXWhjCo" height="1" width="1" alt=""/>

Why 'baking powder' doubles or triples efficiency of plastic solar cells
The efficiency of plastic solar cells can be doubled or tripled if an extra solvent is added during the production process, comparable with the role of baking powder in dough mixture. Exactly how this works has been unclear for the last ten years. But now researchers have come up with the answer in a publication in Nature Communications. This new understanding will now enable focused development of plastic solar cells.<img src="http://feeds.feedburner.com/~r/sciencedaily/matter_energy/solar_energy/~4/b1JSMPauzwg" height="1" width="1" alt=""/>

Chances of saving with solar energy greater for Indiana farms than homes
The probability of saving money by using solar energy rather than standard grid electricity is 92 percent for Indiana farm businesses and about 50 percent for homes, energy economists find.<img src="http://feeds.feedburner.com/~r/sciencedaily/matter_energy/solar_energy/~4/k0BR-E5cXvE" height="1" width="1" alt=""/>

High efficiency concentrating solar cells move to the rooftop
Ultra-high efficiency solar cells similar to those used in space may now be possible on your rooftop thanks to a new microscale solar concentration technology developed by an international team of researchers.<img src="http://feeds.feedburner.com/~r/sciencedaily/matter_energy/solar_energy/~4/82hYXoM_Mzc" height="1" width="1" alt=""/>

Solar and wind power will be the cheapest forms of energy in the future
A new study demonstrates that an energy system based completely on renewable forms of energy will be economically viable in the future. Within ten years, solar and wind power will be the cheapest forms of energy production for Asia's largest energy markets.<img src="http://feeds.feedburner.com/~r/sciencedaily/matter_energy/solar_energy/~4/lDmhfD1Kk6A" height="1" width="1" alt=""/>

A third industrial revolution for Norway
Norway's wealth and prosperity over the last four decades has been built on oil, but a futurist and social and economic thinker, says it's time for the country to change. The Third Industrial Revolution is coming, and Norway needs to abandon fossil fuels and move towards a greener future that relies on renewable energy, shared transport and ultra-efficient housing, he says.<img src="http://feeds.feedburner.com/~r/sciencedaily/matter_energy/solar_energy/~4/1CQZ--kTOwY" height="1" width="1" alt=""/>

Quest for efficiency in thermoelectric nanowires
Reseachers have developed a single electroforming technique that tailored key factors to better thermoelectric performance: crystal orientation, crystal size and alloy uniformity.<img src="http://feeds.feedburner.com/~r/sciencedaily/matter_energy/solar_energy/~4/Bxyey_U-ghc" height="1" width="1" alt=""/>

Pinholes are pitfalls for high performance solar cells
The most popular next-generation solar cells under development may have a problem – the top layer is full of tiny pinholes, researchers have found.<img src="http://feeds.feedburner.com/~r/sciencedaily/matter_energy/solar_energy/~4/jfkozT06ZcU" height="1" width="1" alt=""/>

Crystal light: New family of light-converting materials points to cheaper, more efficient solar power and LEDs
Engineers have shone new light on an emerging family of solar-absorbing materials that could clear the way for cheaper and more efficient solar panels and LEDs. The materials, called perovskites, are particularly good at absorbing visible light, but had never been thoroughly studied in their purest form: as perfect single crystals. Using a new technique, researchers grew large, pure perovskite crystals and studied how electrons move through the material as light is converted to electricity.<img src="http://feeds.feedburner.com/~r/sciencedaily/matter_energy/solar_energy/~4/X5FLIAVVrQ4" height="1" width="1" alt=""/>

New technique for growing high-efficiency perovskite solar cells
Researchers have revealed a new solution-based hot-casting technique that allows growth of highly efficient and reproducible solar cells from large-area perovskite crystals. The researchers fabricated planar solar cells from pervoskite materials with large crystalline grains that had efficiencies approaching 18%.<img src="http://feeds.feedburner.com/~r/sciencedaily/matter_energy/solar_energy/~4/6NyGQ_-mb4o" height="1" width="1" alt=""/>

Solar chip monitors windows
A new kind of radio chip is intended to warn when windows are left open. This way, you can avoid having the heat go out the window on cold days. The sensor also detects break-in attempts early on. The key: This maintenance-free chip powers up with energy supplied by solar power.<img src="http://feeds.feedburner.com/~r/sciencedaily/matter_energy/solar_energy/~4/fBCtjvE6Jko" height="1" width="1" alt=""/>

Demystifying nanocrystal solar cells
Researchers have developed a comprehensive model to explain how electrons flow inside new types of solar cells made of tiny crystals. The model allows for a better understanding of such cells and may help to increase their efficiency.<img src="http://feeds.feedburner.com/~r/sciencedaily/matter_energy/solar_energy/~4/qJSRE8ABBHs" height="1" width="1" alt=""/>

Economic trade-offs of owning versus leasing a solar photovoltaic system
Two new reports examine the economic options customers face when deciding how to finance commercial or residential solar energy systems. Analysts found that businesses that use low-cost financing to purchase a photovoltaic (PV) system and homeowners who use solar-specific loans can save up to 30 percent compared with consumers who lease a PV system through a conventional third-party owner.<img src="http://feeds.feedburner.com/~r/sciencedaily/matter_energy/solar_energy/~4/LoCaYd1iDgY" height="1" width="1" alt=""/>

Carbon nanoballs can greatly contribute to sustainable energy supply
Researchers have discovered that the insulation plastic used in high-voltage cables can withstand a 26 per cent higher voltage if nanometer-sized carbon balls are added. This could result in enormous efficiency gains in the power grids of the future, which are needed to achieve a sustainable energy system. The renewable energy sources of tomorrow will often be found far away from the end user. Wind turbines, for example, are most effective when placed out at sea. Solar energy will have the greatest impact on the European energy system if focus is on transport of solar power from North Africa and Southern Europe to Northern Europe.<img src="http://feeds.feedburner.com/~r/sciencedaily/matter_energy/solar_energy/~4/BdPLiR3xf5E" height="1" width="1" alt=""/>

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