“Space-based solar power” (SBSP) sounds great in theory: giant solar farms in space collect unobstructed sunlight 24/7 and beam it to Earth stations, all using technology that already exists. It isn’t getting off the ground (pun intended!) primarily because of the cost of launching thousands of tonnes into space, plus assembly and maintenance. The attraction is that, if it can happen affordably, it could provide a hundred times the energy the … [Read more...]
Clean Energy Innovation: investment continued to rise despite a turbulent 2022
In a turbulent year, financially and geopolitically, investment in energy innovation still rose. Public spending on energy R&D grew by 10% in 2022 (estimated at $44bn), with 80% devoted to clean energy. Listed energy-related companies saw a similar rise. And early-stage venture capital investment reached a new high of $6.7bn. But risks remain, explains Simon Bennett at the IEA who summarises the innovation chapter in their latest “World … [Read more...]
Farming Algae for Carbon Capture: new research cuts “fouling.” Scale-up in 3 years?
Natural marine algae already account for 50% of global CO2 removal. Farming it at scale in artificial tanks or tubes would take up a fraction of the land footprint of terrestrial plants. And algae can grow up to 50 times more quickly than land-based plants. It could be a game-changer that brings carbon capture costs down and make it a commercial reality. Here, David Chandler at MIT explains how new research there can make farming algae much more … [Read more...]
Ammonia from water microdroplets: lab demonstrates cheap, low-tech production
Very early stage research has discovered a new way of making ammonia cheaply, on a small scale (or large, if you want!), and with no harmful emissions, explains Adam Hadhazy writing for Stanford University. The process uses a cocktail of water, nitrogen gas, and a solid catalyst sprayed through a simple, low-tech instrument to make the ammonia. In contrast, the existing industry-standard Haber-Bosch process is energy intensive, large scale, and … [Read more...]
“Flow Batteries” for grid-scale storage: modelling cheaper alternatives to Vanadium
Flow batteries are a promising new technology for grid storage. Rather than the standard batteries that store charge in a solid material, they use a solution to store that charge, making large-scale long-duration electricity storage much easier. Vanadium electrolytes have been the preferred choice so far, but affordable supplies are limited and a cheaper alternative will be needed for global scale-up, explains Nancy Stauffer at MIT who describes … [Read more...]
Perovskite: abundant, cheap, printable solar cells demonstrated, ready to generate power
Laboratories around the world are racing to make printable perovskite solar cells, produced in abundance and so thin they can be wrapped around almost anything. It’s a huge advantage over the typical silicon cell that is relatively big and fragile. And perovskite is much less expensive to produce. David Beynon at Swansea University describes research there that has demonstrated how a roll of plastic film can be loaded into a printing press to … [Read more...]
“Exascale” computing algorithms can deliver new Wind Turbine designs and on-site power-maximising strategies
Advances in exascale computing algorithms and models for multiscale atmospheric flows are leading to new wind turbine designs and on-site power-maximising strategies previously not possible, explains Brooke Van Zandt at NREL. The models can contain and process two billion grid points, simulating the air flow around turbines in a large wind farm with unprecedented accuracy. Van Zandt describes how the new tools are being used to deal with highly … [Read more...]
“Rebound Effect”: cheap LEDs mean more lights everywhere. But brighter homes, offices and public spaces are worth having
LEDs are 90% more efficient than modern incandescent bulbs. Their rapid uptake has resulted in measurable cuts in energy demand and emissions. But their plummeting cost over the last ten years is also causing a “rebound effect” where people are using more and more LEDs, not least for outdoor lighting. Lucas Davis at the Haas School of Business believes we must embrace it, even if it’s counter to maximising energy savings. More and brighter … [Read more...]
Can Phytomining deliver Critical Minerals at scale: farming plants that accumulate high metal concentrations
Both Europe and the U.S. are making plans to secure supplies of critical minerals as the transition gains pace. Domestic mining or securing import deals with close allies is the main focus. Here, Maria Krol-Sinclair and Thomas Hale at CSIS review the prospects for a new method that will require neither: phytomining. Some plants, called hyperaccumulators, soak up high concentrations of metals into their leaves, bark, and roots. These plants can … [Read more...]
4 CEOs explain their innovations: EV charging, aviation fuel, hydrogen fuel cells, nuclear waste-to-energy
To meet our global climate targets, new solutions, technologies and pathways will be needed. Existing technologies, on their own, can’t be scaled up fast enough to do it. Robin Pomeroy and Kate Whiting at the World Economic Forum pick out highlights from their podcast that hears from four CEOs of innovative companies, covering EV charging, aviation, hydrogen fuel cells, and new nuclear. Today’s millions of EV charging points needs to rise to 450m … [Read more...]
“Combustion” can make cathodes for lithium-ion batteries more cheaply, quicker, using less energy
Burning things produce soot. And that soot contains materials that have been morphed into something else. As Nancy Stauffer at MIT explains, new research there has shown the burning process can be used to produce cathodes far more cheaply, quicker, more simply, and with less energy than the standard method. It’s another example, from an unexpected direction, of innovations cutting the costs of an essential component of the energy transition: … [Read more...]
Smart Glasses: experts can monitor and advise on power plant inspections anywhere in the world
The pandemic made on-site testing of power stations and their components more complicated – and considerably so in some cases. But it also made a wide range of product and services companies aware of the availability of technology to monitor, manage and repair units remotely. Rather than fly several experts to a single site, the experts can stay where they are and watch the inspection happen virtually, while giving advice and instructions on the … [Read more...]
From lab to commercialisation: what is the optimal pathway for Clean Energy Technologies?
It’s a considerable challenge to predict, decades in advance, what the world will need and get it from lab to market. Madeline Geocaris and Andrea Wuorenmaa at NREL summarise four case studies that reveal the key elements required: a good balance of technology, R&D, and public-private partnership; regulatory and market force alignment; good timing for market opportunities. The goal is the optimal pathway to the successful first … [Read more...]
Comparing the efficiency and progress of the 5 leading Solar PV cell technologies
NREL’s “Best Research-Cell Efficiency Chart” allows researchers to easily compare the performance of specific PV technologies, stretching back 50 years. It’s regularly updated and is free to use, explains Wayne Hicks and Harrison Dreves at NREL. A new “interactive” version is now available. The focus is on crystalline silicon cells, single-junction gallium arsenide cells, multijunction cells, thin films, and emerging PV. For example, you can … [Read more...]
Turning waste biomass into clean fuel: cheap, portable equipment, cuts emissions, earns income for rural poor
The burning of biomass accounts for 10% of primary energy used worldwide: wood, peat, animal dung, corn stalks, rice husks, hay, straw, and other agricultural waste. Billions of people, mainly in remote and poorer regions, rely on such fuels for cooking, heating, and other household needs. But it’s a major source of emissions as well as pollution. And, annually, an estimated $120bn worth of crop and forest residues are burned out in the open … [Read more...]
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