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Category: solar power – Page 70

The Air Force Research Laboratory’s (AFRL)and Northrop Grumman’s Space Solar Power Incremental Demonstrations and Research (SSPIDR) Project announced that they are one step closer to collecting solar energy in space and transmitting it to Earth using radio frequency (RF). The team has successfully conducted the first end-to-end demonstration of key hardware for the Arachne flight experiment.

A ground demonstration of novel components for the “sandwich tile” was used to successfully convert solar energy to radiofrequency (RF) – a fundamental step required to pave the way for a large-scale solar power collection system in space. For this to work, it is necessary to use receiving antennas on Earth to convert RF energy into usable power.

Space solar power is a key focus of AFRL, which awarded Northrop Grumman a $100 million contract in 2018 for the development of a payload to demonstrate the key components of a prototype space solar power system. The sandwich tile is currently under development as an essential payload component for Arachne and as a building block for a large-scale operational system.

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In a bit of good news, the spot price for solar grade polysilicon is dropping quite rapidly. If the trend holds, the cost of solar panels in Australia should follow suit soon-ish.

Polysilicon is used in the manufacture of conventional photovoltaic cells used in solar panels. The sought-after stuff was as cheap as chips in July last year, when it was below USD $7/kg. But a series of events including impacts from the pandemic and a couple of factory fires saw it skyrocket.

Polysilicon spot prices were as high as US$36.64/kg at the beginning of this month. But here’s what’s happened in the last few weeks as reported by Bernreuter Research.

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It’s the stuff of science fiction but it’s real.

Although it may sound like science fiction, space-based solar power has started making headway with several projects underway. In February, we brought you news of technology firm Redwire acquiring Deployable Space Systems (DSS), a leading supplier of deployable solar arrays capable of enabling space missions with the intention of using them to deploy space-based solar power.

Meanwhile, last August we brought you further news, of Caltech’s Space Solar Power Project (SSPP) that collected solar power in space to be transmitted wirelessly to Earth offering energy unaffected by weather or time of day. The project promised to make solar power that could be continuously available anywhere on earth.

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A multipurpose electric truck with a 400-mile range.

Wolfgang, a creative agency based in Los Angeles, California has recently unveiled the Thundertruck, an electric off-roader concept with dashing, futuristic features including bat wing-shaped solar panels.

The company says that the multipurpose EV offers superior on and off-road performance and an entirely new level of versatility and functionality without zero emissions.

The team behind Thundertuck figured that since there aren’t charging stations out in the desert, a solar roof to power the vehicle would come in handy. Since the sun is an endless power source, the bat wing-shaped collapsible solar awnings provide the vehicle with the necessary battery energy while also doubling as an auxiliary shade for when you’re camping or fishing.

The 800-horsepower Thundertruck EV boasts a 180 kWh battery, a 400-mile range, and an 800 lb-ft of torque. What’s more, it can go from 0 to 60 mph in 3.5 seconds. The truck comes in two models, 4×4 and 6×6. The company website states that “Our state-of-the-art TT Range Extender easily converts the Thundertruck into a 6WD monster that quietly delivers unparalleled power and performance.”

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An international team of experts has collected data on metal halide perovskite solar cells from more than 15,000 publications and developed a database with visualization options and analysis tools. The database is open source and provides an overview of the rapidly growing knowledge as well as the open questions in this exciting class of materials. The study was initiated by HZB scientist Dr. Eva Unger and implemented and coordinated by her postdoc Jesper Jacobsson.

Halide perovskites have huge potential for and other optoelectronic applications. Solar cells based on metal-organic perovskites achieve efficiencies of more than 25 percent, they can be produced cheaply and with minimal energy consumption, but still require improvements in terms of stability and reliability. In recent years, research on this class of materials has boomed, producing a flood of results that is almost impossible to keep track of by traditional means. Under the keyword “ solar,” more than 19,000 publications had already been entered in the Web of Science (spring 2021).

Now, 95 experts from more than 30 international research institutions have designed a to systematically record findings on perovskite semiconductors. The are prepared according to the FAIR principles, i.e. they are findable, accessible, interoperable and reusable. By reading the existing literature, the experts have collected more than 42,000 individual data sets, in which the data can be filtered and displayed according to various criteria such as material compositions or component type. Researchers from several teams at HZB were involved in this Herculean task.

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Combining two forms of sustainable energy into one range-extending propulsion system, Swiss Sustainable Yachts’ clean, quiet catamaran promises to jumpstart a future in which the word “range” becomes obsolete. The 64-footer harnesses solar energy to create its own hydrogen, powering a fuel cell-electric drive to potentially limitless autonomy, so long as the sun is shining and the captain isn’t pushing past cruising speed. The Aquon One might prove the ultimate luxury smart yacht of the sustainable generation.

The Aquon One has a 134-hp fuel cell-powered electric engine in each hull. Swiss Sustainable Yachts (SSY) explains that it opts for hydrogen power because of its light weight as compared to batteries or fossil fuels, long-lasting storage capability and lack of harmful emissions. Also critical to the Aquon One design is hydrogen’s ability to be created sustainably, in this case using a solar-powered electrolyzer that splits hydrogen from desalinated seawater. The 689 square feet (64 sq m) of solar panels covering the Aquon One’s hard-top generate all the electricity needed to develop the hydrogen, which is then stored away in carbon tanks.

The Aquon One does include a small battery bank for short-term energy needs, both for propulsion and onboard electrical usage. The hydrogen, on the other hand, is compressed and designated for longer-term use. SSY claims the hydrogen tanks hold more than 100 times the energy of a full-size modern battery system, offering more range and capability than it would get by expanding the size of its battery.

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And it could work in wearables and light aircraft.

Researchers at Stanford University are developing an efficient new solar panel material that is fifteen times thinner than paper, a press statement reveals.

Made using transition metal dichalcogenides (TMDs), the materials have the potential to absorb a higher level of sunlight than other solar materials at the same time as providing an incredibly lightweight alternative to silicon-based solar panels.

Searching for silicon alternatives The researchers are part of a concerted effort within the scientific community to find alternative solar panel materials to silicon. Silicon is by far the most common material used for solar panels, but it’s heavy and rigid, meaning it isn’t particularly well suited to lightweight applications required for aircraft, spacecraft, electric vehicles, or even wearables.

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