Renewable energy

Bioenergy (38)
Biomass (84)
Solar energy (1169)
Wind power (132)

Synopsis: Domenii: Energy: Energy generale: Energy forms: Renewable energy:

In this case, the car uses a type of advanced cellulosic 85%ethanol renewable fuel from woody biomass.

Butanol can be produced by bacteria in biomass and if an economically efficient method can be found to industrialise that process then your flight of the future could literally be fuelled by alcohol.

But the rise in wind farms has unintended its own effects. Air traffic control systems are being interfered with, both offshore and across moors and hills.

In places such as Scotland, where the projections for wind farms are amongst the densest in the world,

Solar panels on the structure top will generate power. Such concepts allow us to see bridges in new ways not just as a method of crossing natural barriers,

I was surprised to see solar panels and water heaters sprouting from government buildings hospitals police stations bus shelters as well as thousands of gaily colored private homes throughout the Caribbean island.

#U s. Guarantees $230 Million Loan For Construction of Latin america Largest Solar plant A large solar power plant is coming to Chile Atacama desert

and how we can transition to a clean energy economyobama told The Associated press. nd wel be announcing some collaborations including the facilitation of a construction of a major solar plant inside of Chile that can help meet their energy needs. bama spent time with Chilean President

He is also chairman of Solarcity, which he said can helpprovide solar energy for the national network of Tesla EV chargers his company is creating e

and an efficient solar panel which lets it users charge smartphones, and even tablets, on the go. Featuring a solar panel the size of an ipad,

the Solartab lets its users charge any mobile device using green, sun-fueled energy. And even more impressively, ipad enthusiasts can charge their beloved touch-screen gadget even

they not only increased the solar panel size way beyond what youl find on the average portable solar charger on the market today,

but also works as a stand for the solar panel, which lets users angle the solar panel in three different positions.

After adjusting the angle to the sun current position, all that left to do is plug in any smartphone

Whether it a new wind farm in Iowa an energy efficiency retrofit in Massachusetts, or a utility-scale solar array in Nevada, these projects require American ingenuity and labor.

The sector is helping stimulate our economy, said E2 Executive director Judith Albert. Last year job announcements were about 30 percent lower than in 2012.

*In New jersey, Trinity Solar LLC installed solar panels at housing units at Joint Military Base Mcguire-Dix-Lakehurst in Burlington County,

if Congress reinstates critical tax policies such as the wind industry production tax credit (PTC) and several energy efficiency tax incentives.

#GE Makes A Wind turbine Especially For Japan Generous solar power feed in tariffs have driven a boom in installations in the last year

what it calls the. 85-103 wind turbine for Japan. That right Japan gets its own wind turbine.

GE says the 2. 85-103 comes with enhanced tower engineered for Japanese environmental conditions including seismic and extreme wind events as required by Japanese construction and building codes.

image via GE) What is it about Japan that it requires a specially designed wind turbine?

GE 2. 85-103 wind turbine is engineered specifically for Japanese environmental conditions and is able to withstand higher turbulence areas typhoon class extreme wind speeds

U s. solar power capacity, for instance, recently surpassed 10 gigawatts as the price of solar panels has fallen some 75 percent during the past five years

These programs include lending for residential solar electricity and hot-water systems, deep energy efficiency retrofit loans through the Property Assessed Clean energy,

and businesses to invest in solar panels and other clean energy projects. The loans, which are designed to offset the upfront cost of photovoltaic systems,

For comparison utility-scale solar arrays in the sun-drenched U s. Southwest deliver more than 25 percent capacity factors p

, and a photovoltaic cell. image via MIT/John Freidah) Here how MIT outlines the development:(T) he team inserted a two-layer absorber-emitter device made of novel materials including carbon nanotubes and photonic crystals between the sunlight and the PV cell.

and size issues by combining the best traditional wind technologies with a unique wind delivery system that produces more efficient and powerful wind generation machines.

for the first time in wind industry history three turbines may run in series in a single tower to produce more energy.

The Omniprocessor, designed by Seattle-area engineering firm Janicki Bioenergy, reinvents the sewage treatment plant. In the Omniprocessor, sewer sludge is fed into tubes

#Wind turbine Trees Generate Renewable energy for Urban Settings French entrepreneur Jérôme Michaud-Larivière decided to do something about that.

#Developing high-efficiency lasers to manufacture solar panels As the world continues its efforts to combat climate change

Solar panels are able to function because they have intricate patterns of tiny channels engraved into their surface,

high-tech materials now being developed for solar panels. In place of conventional solar panels measuring up to 5 millimetres in thickness,

the modern PV industry is looking to use new types of lightweight and flexible materials to construct solar panels measured in micrometres (thousandths of a millimetre).

With such materials, the scribing process must be controlled with a high degree of accuracy since it is vital that it penetrates only one layer of the thin solar cell film at a time.

PCF lasers provide this accuracy. Moreover, since PCF lasers operate with ultra-short pulse rates,

the flexibility means that solar panels can be wrapped onto any suitable structure, flat or curved. The results of the ALPINE team work, demonstrating the capability of PCF lasers to transform existing scribing technology and opening the way to rapid growth in the high-volume production of flexible,

thin-film solar cells, are hard to overestimate. In the words of Professor Selleri: echanical scribing will disappear very quickly from the PV industry,

they are at the core of the electric generators used in all wind generators. The project coordinated by The Chancellor, Masters and Scholars of the University of Cambridge, UK has 7 participants from 4 countries i

powered by a solar cell located on the flat top of the container. A fibre-optic grid monitors any deformations in the bag (signs of tearing

but ew partners are always welcome These partnerships could see Light-Rolls being involved in a myriad of sectors including automotive and building lighting applications, flexible solar cells and batteries and even consumer products and games.

The company initiated its own R&d programme focused on biomass conversion. In particular using sugar and starch based products to replace the petrochemical feedstock generated from oil.

They include biomass producers advancedbiomass pre-treatment specialists catalyticand enzymatic reactions developers and finalchemical and biochemical producers and endusers.

Theproject will provide an efficient bridge betweenthe agriculture and chemical industries byintegrating the entire biomass chain in asingle concept adaptable for use in a rangeof locations.

The new processing route uses European biomass as feedstock which will help to secure and increase the internal EU energy supply.

Jobs will be created for the whole value chain from the initial biomass feedstock producers to the final end users.

BIOCOUP will also help to make a significant contribution to the reduction of CO2 EMISSIONS in the transportation sector through the efficient utilisation of biomass material.

and food from existing industries and the processing of upgraded biomass-derived liquids in existing mineral oil refineries.

This will encourage the acceptance of biomass and further the technological development of biomass production routes.

and recently announced the purchase of a 165-megawatt Texas wind farm that will boost the home furnishing company total wind production capacity to nearly 1, 000 gigawatts of electricity per year.

Because biochar can be produced from various waste biomass including agricultural residues this new technology provides an alternative

and has been shown to cause cancer. ecause biochar can be produced from various waste biomass including agricultural residues this new technology provides an alternative and cost-effective way for arsenic removalsays Bin Gao associate professor of agricultural

and gives scientists a way to potentially produce high amounts of oil and biomass. In terms of human medicine this discovery gives scientists a promising new model to study tumor suppression and growth.

#New polymer makes solar cells more efficient Solar cells made from polymers have the potential to be cheap and lightweight

Now a team of researchers led by Yu has identified a new polymer that allows electrical charges to move more easily through the cell boosting electricity production. olymer solar cells have great potential to provide low-cost lightweight

The active regions of such solar cells are composed of a mixture of polymers that give and receive electrons to generate electrical current

when added to a standard polymer-fullerene mixture. ullerene a small carbon molecule is one of the standard materials used in polymer solar cellslu says. asically in polymer solar cells we have a polymer as electron donor

and fullerene as electron acceptor to allow charge separation. n their work the researchers added another polymer into the device resulting in solar cells with two polymers and one fullerene.

when an optimal amount of PID2 was added the highest ever for solar cells made up of two types of polymers with fullerene

The group which includes researchers at the Argonne National Laboratory is now working to push efficiencies toward 10 percent a benchmark necessary for polymer solar cells to be viable for commercial application.

In order for a current to be generated by the solar cell electrons must be transferred from polymer to fullerene within the device.

The fibers serve as a pathway to allow electrons to travel to the electrodes on the sides of the solar cell. t s like you re generating a street

The lowinginfrared light is guided to the edge of the plastic where it is converted to electricity by thin strips of photovoltaic solar cells. ecause the materials do not absorb

The discovery could potentially help engineers make more efficient solar cells and energy storage systems. It also injects new evidence into an ongoing uantum biologydebate over exactly how photosynthesis manages to be so efficient.

Solar panels can only generate power when the sun shining, and wind turbines can only generate power when the wind blows.

#Solar cell spikes let in 99%of sunlight The more light absorbed by a solar panel active elements,

A new one-step process to etch nanoscale spikes into silicon lets the maximum amount of sunlight reach a solar cell,

#Can nano dots outshine current solar cells? University of Toronto rightoriginal Studyposted by Marit Mitchell-Toronto on June 9 2014those flat glassy solar panels on your neighborâ#roof may be getting a more efficient makeover thanks to a new class of solar-sensitive nanoparticles.

This new form of solid stable light-sensitive nanoparticles called colloidal quantum dots could lead to cheaper and more flexible solar cells as well as better gas sensors infrared lasers infrared light emitting diodes and more.

The work appearsâ in Nature Materials. Collecting sunlight using these tiny colloidal quantum dots depends on two types of semiconductors:

and with this new material we can build new device structuressays Ning odide is almost a perfect ligand for these quantum solar cells with both high efficiency

But improved performance is just a start for the new quantum dot-based solar cell architecture. The powerful little dots could be mixed into inks

and chemical energy in plants and solar cells and in the future it may enable metals to function as active elements in optical communications.

and solar cells but Pint and Westover are confident that the rules that govern the load-bearing character of their design will carry over to other materials such as carbon nanotubes and lightweight porous metals like aluminum.

For the battery project Chao added tiny nanoparticles of carbon to the polymer so it would conduct electricity. e found that silicon electrodes lasted 10 times longer

silicon electrodes swell to three times their normal size and shrink back down again each time the battery charges and discharges.

Researchers in Cui s lab and elsewhere have tested a number of ways to keep silicon electrodes intact

and solar cell industry is the first solution that seems to offer a practical road forward Cui says.

#Crystal structure could push the limits of solar cells University of Pennsylvania right Original Studyposted by Evan Lerner-Pennsylvania on November 13 2013 A new model for solar cell construction may ultimately make them less expensive easier to manufacture

and more efficient at harvesting energy from the sun. For solar panels wringing every drop of energy from as many photons as possible is imperative.

As reported in the journal Nature existing solar cells all work in the same fundamental way:

or polarity solar cells need to be made of two materials. Once an excited electron crosses over the interface from the material that absorbs the light to the material that will conduct the current it can't cross back giving it a direction. here's a small category of materials

and of materials science and engineering at the University of Pennsylvania. e call this the bulk photovoltaic effect rather than the interface effect that happens in existing solar cells.

since the 1970s but we don't make solar cells this way because they have only been demonstrated with ultraviolet light

and infrared spectrum. â#Finding a material that exhibits the bulk photovoltaic effect for visible light would greatly simplify solar cell construction.

Moreover it would be a way around an inefficiency intrinsic to interfacial solar cells known as the Shockley-Queisser limit where some of the energy from photons is lost as electrons wait to make the jump from one material to the other. hink of photons coming from the sun

Moreover the ability to tune the final product's bandgap via the percentage of barium nickel niobate adds another potential advantage over interfacial solar cells. he parent's bandgap is in the UV rangesays Jonathan E. Spanier

which is another very useful trait. nother way to get around the inefficiency imposed by the Shockley-Queisser limit in interfacial solar cells is to effectively stack several solar cells with different bandgaps on top of

These multi-junction solar cells have a top layer with a high bandgap which catches the most valuable photons

and cost of the solar cell. he family of materials we've made with the bulk photovoltaic effect goes through the entire solar spectrumrappe says. o we could grow one material

but gently change the composition as we're growing resulting in a single material that performs like a multi-junction solar cell.?

and earth-abundant elements unlike compound semiconductor materials currently used in efficient thin-film solar cell technology. he research was supported by the Energy Commercialization Institute of Ben Franklin Technology Partners the Department of energy's Office of Basic Sciences

and tuned to capture microwave signals researchers have designed a power harvesting device with efficiency similar to that of modern solar panels.

It operates on a similar principle to solar panels which convert light energy into electrical current. But this versatile energy harvester could be tuned to harvest the signal from other energy sources including satellite signals sound signals

what is achieved in solar cells.?It s possible to use this design for a lot of different frequencies

In fact it should be possible to construct these power cells out of the excess silicon that exists in the current generation of solar cells sensors mobile phones

since it is very expensive and wasteful to produce thin silicon wafers. int s group is currently using this approach to develop energy storage that can be formed in the excess materials or on the unused backsides of solar cells and sensors.

#Ceramic converter tackles solar cell problem Stanford university rightoriginal Studyposted by Mark Shwartz-Stanford on October 21 2013coating a solar cell component in ceramics makes it more heat resistant

which can be absorbed by solar cells to make electricity a technology known as thermophotovoltaics. Unlike earlier prototypes that fell apart before temperatures reached 2200 degrees Fahrenheit (1200 degrees Celsius) the new thermal emitter remains stable at temperatures as high as 2500 F

A typical solar cell has a silicon semiconductor that absorbs sunlight directly and converts it into electrical energy.

while lower energy waves simply pass through the solar panel. n theory conventional single-junction solar cells can only achieve an efficiency level of about 34 percent

Instead of sending sunlight directly to the solar cell thermophotovoltaic systems have an intermediate component that consists of two parts:

which is beamed then to the solar cell. ssentially we tailor the light to shorter wavelengths that are ideal for driving a solar cellfan explains. hat raises the theoretical efficiency of the cell to 80 percent

and his colleagues at Stanford who confirmed that devices were still capable of producing infrared light waves that are ideal for running solar cells. hese results are unprecedentedsays former Illinois graduate student Kevin Arpin the lead author of the study. e demonstrated for the first time that ceramics

and determine if the experimental thermal emitters can deliver infrared light to a working solar cell. e ve demonstrated that the tailoring of optical properties at high temperatures is possiblebraun says. afnium

which may make it useful for protecting solar cells from the elements Lou says. ssentially this can be a very useful structural material coating

Researchers say the discovery could one day lead to bigger harvests of biomass for renewable energy.

and thus better harvest bioenergy. ong and Daniel Cosgrove professor and chair in biology at Penn State are the lead authors.

That is roughly the same efficiency at which the best commercially available solar cells convert sunlight into electricity.

Photovoltaic solar panels, by comparison, typically have an overall energy efficiency of around 15 percent. When used in the autoclaves in the tests,

Commercial applications in small electronic devices solar cells batteries and even medical devices are just around the corner.

The entire process is like a solar cell in reverse Kim says.##In a solar cell you use light to form excitons

and separate them into an electron and a hole electrically#she says.##We bring together an electron

APS has contracted to buy all of the 280 MW of solar energy from the Solana solar thermal plant 70 miles southwest of Phoenix. That could provide enough solar electricity for 70

when it comes to the residential solar panel industry. As clean energy options get cheaper starting with large utility solar farms,

and wind farms more companies that offer colocation and cloud services will be able to afford to offer clean energy options to customers.

Fuel Since the Biolite will burn almost any biomass fuel; from wood, pine cones, leaves, pellets, rice husks, even dung, it means fuel need not be carried,

"In particular, the GEDI data will provide us with global-scale insights into how much carbon is being stored in the forest biomass.

And that, in turn, enables scientists to estimate how much biomass the trees contain and how much carbon they are storing.

and along with an LED lighting array features photovoltaic panels, a wind turbine, a battery pack, and an electronic control system that manages the flow of energy between those components.

The commercial version of the streetlight should feature two 100-watt polycrystalline solar panels, an array of Philips LEDS that put out either 3, 500 or 4,

This means that in principle this technology could turn out as an interesting, more versatile alternative than transparent solar cells, a technology

What's more wind farms and solar power plants need to be able to store generated electricity effectively for

#Roll to roll manufactured decorative solar panels to be 10 times cheaper Based on printing technologies, VTT Technical Centre of Finland has developed

and utilized a mass production method allowing the manufacturing of decorative, organic solar panels. Freedom of design increases the range of panel applications on the surfaces of interior and exterior building spaces.

VTT is also studying the feasibility of printing technology in the mass production of solar panels made from inorganic perovskite materials.

The new mass production method enables to create interior design elements from organic solar panels (OPV, organic photovoltaics) harvesting energy from interior lighting or sunlight for various small devices and sensors that gather information from the environment.

The solar panel manufactured with VTT gravure and screen printing technologies is only around 0. 2 mm thick,

VTT is also currently examining how well the roll-to-roll printing methods are suited to the manufacturing of inorganic solar panels made from perovskite materials.

The first perovskite solar cells manufactured in the laboratory using solution-based processes have been promising. The performance of this solar cell is roughly five times better than that of an organic photovoltaic cell,

and the material costs can be even ten times lower. Freely designed decorative organic solar panels are applicable also in indoor use to harvest energy from indoor Light production methods are cost-effective

and materials can be recycled after the use. New materials such as perovskite can be printed with same methods and increase efficiency in future.

The research scientists have tested the feasibility of the method by printing leaf-shaped photovoltaic cells. Active surface of a one leaf is 0 0144 m2

Two hundred OPV leaves make one square metre of active solar panel surface that generates 3. 2 amperes of electricity with 10.4 watts of power at Mediterranean latitudes.

Organic solar panels are flexible and light, but their efficiency is lower compared to conventional, rigid silicon-based solar panels.

The solar panels are manufactured with printing machines based on conventional printing methods using the roll-to-roll method,

which enables the rapid mass production of the products: the printing machine can produce up to 100 metres of layered film per minute.

The market for organic photovoltaic cells is developing, with a market breakthrough expected within three years.

VTT is also developing a method to utilize light in wireless data transfer by using solar cells as data receivers.

This will open new application possibilities to utilize printable solar cells e g. in Iot (Internet of things) type applications, in

because it can be powered by a simple solar panel that generates five volts of energy, he said. t is a simple technology

and solar panels at the other, can pivot from straight overhead down to a 45-degree angle to chase the sun. directed by a CAD design from a connected laptop,

the electronics, cameras and a laptop all run on batteries charged by the solar panels PRINTING Kayser first designs the object he wants to print in a CAD program.

It is also thanks to advancements in solar technology which brought costs down, and innovative new forms of financing that make#going solar more affordable for consumers.#

#Companies like Vivint, Solarcity and Sunrun have raised all upwards of $500 million to finance residential solar projects around the country.

#Tesla batteries are powering an energy revolution Solarcity generator Tesla motors lithium-ion battery packs aren t just powering electric luxury sports sedans for wealthy any more.

They ve started#appearing in a small number of California homes to store electricity generated by rooftop solar panels,

and Solarcity, the Silicon valley solar installer, will start providing Tesla batteries for businesses that want to cut their utility bills.#

#A big box retailer like Walmart could charge up a Tesla battery pack with cheap energy produced by its Solarcity rooftop photovoltaic array

And the cost of the Solarcity s system, called Demandlogic? Effectively zero, according to Solarcity, since the monthly payments for energy storage would be less than the money saved by not forking over cash to the utility.

And if that sounds like a threat to century-old monopoly utilities, it is.####Our business model is to become the energy company of the 21st century,

##Solarcity chief executive Lyndon Rive told#The Atlantic.####You re still connected to the grid but the grid would be your secondary provider

such as those in California and parts of Massachusetts and Connecticut where Solarcity is offering Demandlogic.

And to get the Tesla battery pack you have to sign up for a solar array, which means only businesses with low-rise buildings and flat roof##retailers,

While Stem is a startup the utilities should be particularly wary of Solarcity and its partnership with Tesla motors.

Tesla chief executive Elon musk serves as Solarcity s chairman and is Rive s cousin.)Tesla and Solarcity s combined market cap##$21. 3 billion##exceeds that of the parent companies of Pacific gas & electric and Southern California Edison, the two big California utilities

whose customers Rive covets. And Solarcity is pioneering#the securitization of solar##giving it the ability to dip into a potentially vast pool of capital by packaging leases for photovoltaic systems into asset-backed notes that are sold to pension funds,

hedge funds and other deep-pocketed investors. Rive says Demandlogic should save commercial customers 20 percent in demand charges.

but would be able to store roughly 30 percent of the electricity generated by the solar array.

and Rive and Solarcity spokesman Jonathan Bass was sketchy on the details on how the economics pencil out

But growing economies of scale are in Solarcity and Tesla s favor.####In places with high costs of electricity,

It would##enable construction of large support structures for systems such as multi-hundred-kilowatt solar arrays, large solar sails,

But a just-completed design analysis for a 300-kilowatt orbital solar array verified that Spiderfab can provide the projected tenfold decrease in stowed volume

Terrestrial solar arrays have achieved grid parity Davis said, but without storage they cannot provide the baseload power utilities need.

Meanwhile, in Arizona yesterday, the state s utility regulator turned back a request by Arizona Public service (APS) to#impose steep new fees on homeowners who install solar panels#on their roofs.

In Arizona, for instance, there were 900 solar arrays installed on Arizona residential rooftops in January 2009. By June of this year, that number had grown to 18,000 with 500 more photovoltaic systems being installed each month.

homeowners receive a credit for the solar electricity they send to the grid that is used to pay for the power they use

half the planet s population may be served best with pay-as-you-go solar technology, not grid services.

Selling cheap basic services like solar electricity into this market through#micropayment schemes#is what makes pay-as-you-go solar not only economically viable,

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