Pigs live in modular pens in barns with airy lattice-like facades on this Croatian farm designed by architecture studio Skroz.
Skroz designed the Eco Pig Farm for Sin Ravnice, one of the first professional breeders dedicated to the long-neglected Slavonian Black pig, which is indigenous to the Slavonia region of eastern Croatia.
The pig is prized for its bacon and the local specialty sausage “kulen”, but its numbers dwindled during the 20th century as factory farming increased, because the breed requires access to pasture.
GE is ready to rock the world of onshore wind turbines with 3D printing for a new concrete base.
Vast swaths of the US have yet to be tapped for wind energy, partly on account of politics and partly because wind speeds in those areas are less than optimal. Only the voting public can take care of the political end. Meanwhile, engineers and innovators are hammering away at the wind speed issue, which can be solved by building taller wind turbine towers. That’s not as easy as it sounds, but GE Renewable Energy is banking on 3D printing to overcome the obstacles.
Why Not Taller Wind Turbines?
Taller wind turbines have several advantages over their shorter cousins. They can reach heights where winds are stronger, without interference from trees, topography, or buildings. The greater height also allows for longer blades, which means a single turbine can harvest more energy. The cost efficiencies can also pile up for taller, longer wind turbines, at least on paper.
Musk’s latest compensation windfall, which must be certified by Tesla’s board, comes days after he offered to buy Twitter for $43 billion, with analysts suggesting he could sell Tesla shares to help finance the deal.
Musk already is the world’s richest person, according to Forbes.
Tesla reported quarterly revenue of $18.76 billion and so-called adjusted earnings before interest, taxes, depreciation and amortization (EBITDA) of $5.02 billion. Combined with the previous three quarters’ results, that surpasses milestones that trigger the vesting of the ninth through 11th of 12 tranches of options granted to Musk in his 2018 pay package.
A major challenge for producers of electricity from solar panels and wind turbines is akin to capturing lightning in a bottle. Both solar and wind increasingly generate electricity amid little demand, when market prices are too low to cover costs. At noon on sunny days, for example, wholesale power prices in areas with high quantities of solar and wind occasionally fall below zero.
Some renewable energy producers store their excess electricity as green hydrogen, using the electricity to produce hydrogen from water—labeled “green” because the process emits no carbon dioxide. Used to create fuels, fertilizer, and other chemicals, the global hydrogen market is about $125 billion, and it’s growing briskly in part due to increased interest in hydrogen as a fuel for buses, trucks, and even ships. The problem is that producing hydrogen with electricity remains fairly expensive, so it’s only profitable to sell at the higher prices paid by lower-volume customers.
But now, researchers at Stanford University and at the University of Mannheim in Germany have found a possible solution: integrated reversible power-to-gas systems that can easily convert hydrogen back to electricity when power prices spike higher.
Imagine growing crops with 95% less water, or producing meat through methods that free up 80% of the world’s agricultural land. And how about eliminating the CO2 of global supply chains by simply moving production facilities closer to customers and cutting the parts used in the final product a hundredfold? What might sound like crazy ideas are solutions available today through green technologies.
Green tech describes the technology and science-based solutions that mitigate the negative human impact on the environment in a broad range of fields from agriculture to construction. Sixteen per cent of global emissions are caused by transportation, 19% by agriculture, 27% by energy production, 31% by construction and production, with the remaining 7% caused by heating. Green technologies can be applied in all of these CO2-emitting sectors, thus offering broad solutions for sustainable growth.
The researchers behind an energy system that makes it possible to capture solar energy, store it for up to eighteen years, and release it when and where it is needed have now taken the system a step further. After previously demonstrating how the energy can be extracted as heat, they have now succeeded in getting the system to produce electricity, by connecting it to a thermoelectric generator. Eventually, the research – developed at Chalmers University of Technology 0, Sweden – could lead to self-charging electronic gadgets that use stored solar energy on demand.
“This is a radically new way of generating electricity from solar energy. It means that we can use solar energy to produce electricity regardless of weather, time of day, season, or geographical location. It is a closed system that can operate without causing carbon dioxide emissions,” says research leader Kasper Moth-Poulsen, Professor at the Department of Chemistry and Chemical Engineering at Chalmers.
The researchers behind the solar energy system MOST, which makes it possible to capture solar energy, store it for up to 18 years, and release it when and where it is needed, have now taken the system a step further. After previously demonstrating how the energy can be extracted as heat, they have now succeeded in getting the system to produce electricity, by connecting it to a compact thermoelectric generator. The research, which was carried out at Chalmers University of Technology in Sweden, could eventually lead to self-charging gadgets that are powered on-demand by stored solar energy. Credit: Chalmers University of Technology.
PG&E announced that they have turned on their giant Tesla Megapack project with 730 MWh of capacity, and the electric grid company expects that it will “enhance the overall reliability of California’s ever-changing energy supply.”
We first learned of the project at PG&E’s Moss Landing substation when it submitted it to CPUC and the company was in talks with Tesla in 2017. It involves four separate energy storage projects, and two of them, including the one using Tesla Megapack, should become the world’s largest battery systems.
In 2018, we obtained Tesla’s proposal for the project, and it showed that the company plans to use “Megapack” instead of its usual Powerpack for large utility-scale projects. It was one of the first projects announced to use the new battery system, but the actual deployment took so much time that many more Megapack projects came online since.
Perovskites, which have shown enormous potential as a new semiconductor for solar cells, are gaining attention as well as a potential next-generation technology to also power spacefaring missions. As scientists around the globe continue efforts toward harnessing the potential of perovskites on Earth, others are looking into how well the technology might work in the planet’s orbit.
A collaborative research effort to collectively address this important issue involving scientists from the National Renewable Laboratory (NREL) lays out guidelines to test the radiation-tolerating properties of perovskites intended for use in space.
“Radiation is not really a concern on Earth, but becomes increasingly intense as we move to higher and higher altitudes,” said Ahmad Kirmani, a postdoctoral researcher at NREL and lead author of the new paper, “Countdown to perovskite space launch: Guidelines to performing relevant radiation-hardness experiments,” which appears in Joule.
Solar energy has barely scratched the surface of its potential to decarbonize the global economy in time to avert catastrophic warming.
For all the activity in the solar energy marketplace, PV technology has barely even begun to hit the global economy in full force. Huge solar arrays filled with rows of super-efficient silicon solar panels are just one piece of an expanding universe. With that in mind, here are 4 new developments that could kick the slow pace of change into high gear.
1. Distributed Solar Energy
Distributed renewables are a big deal for the US Department of Energy and other solar energy planners, but they generally don’t catch the media spotlight. That’s because they tend to be small. On an individual basis, distributed energy resources range down to the kilowatt scale. They are easily eclipsed by huge multi-million megawatt PV arrays.
