It looks brilliantly simple. Why are onshore wind turbines smaller than offshore ones? Because you have to move them to their location by road, over bridges, through tunnels and around curves. That limits their size. As Michael Purton, writing for WEF, explains it’s why the company Radia is building the world’s biggest aeroplane called WindRunner (12 times the volume of a Boeing 747), big enough to carry turbine blades over 100m long. And the … [Read more...]
Superconducting overhead Transmission Lines that deliver 400MW (and targeting several GW)
How do you double or triple your existing power transmission capacity when costs are rising and you face local opposition to the disruption? Zach Winn at MIT describes a new innovation that uses superconductors designed to transport five to 10 times the amount of power of conventional transmission lines, using essentially the same footprint and voltage level, carried on otherwise standard overhead lines. The superconducting cables (with much of … [Read more...]
Private sector must jump start Lithium-ion Battery Recycling, as first wave of EVs now near end of life
The recycling of lithium-ion batteries is vitally important to the future of electric power, explains Gregg Smith at Orbia Advance, writing for WEF. Making a battery has a significant carbon footprint of its own. Yet recycling can be one tenth the cost of manufacturing a battery from scratch. And energy security is enhanced by lessening dependence on mining countries and other suppliers. It’s why Europe will require new batteries to contain at … [Read more...]
Forecasting the performance of new Solar PV module technologies over 20, 30, and 50 years
Solar PV technology continues to innovate and evolve at a rapid pace. Testing the modules is essential for predicting durability and future performance. But that inevitably means past experience is not a good predictor of the behaviour of the new materials and configurations. Sara Fall and Harrison Dreves at NREL explain how the Durable Module Materials (DuraMAT) Consortium has set up sophisticated testing and data gathering to use the … [Read more...]
New “Solar Thermal Trapping” process can generate 1,000°C for steel, aluminium and cement production
Many industries – production of steel, aluminium and cement being the most obvious – require high heat processes that today can only be achieved commercially using fossil fuels. Paige Bennett at EcoWatch, writing for WEF, describes a new process using solar thermal trapping to reach temperatures of a little over 1,000°C, hot enough to smelt metal. Scientists used semi-transparent materials, including synthetic quartz, to capture sunlight that … [Read more...]
New Concentrated Solar Power system delivers 1,000°C for industrial processes + more
Zach Winn at MIT describes a new method of building high-temperature concentrated solar power systems. The solar receiver heats air to around 1,000°C at atmospheric pressure. The system circulates the hot air with no combustion or emissions to drive a turbine. The system can deliver daytime power and overnight thermal energy storage to provide round-the-clock power. More interestingly, it can provide industrial-grade heat. It’s being … [Read more...]
Zero-Emission Trucks can be cost competitive by 2035 (and much sooner depending on size and range)
Zero-emission medium- and heavy-duty vehicles (MHDVs) such as battery electric and hydrogen fuel cell electric, in every size and range category, can be cost competitive with their diesel equivalents by 2035. In several of those categories it can be much sooner – within the next six years - explains Julia Thomas at NREL. Researchers there have modelled how the total cost of driving for zero-emission and diesel MHDVs can evolve over time under … [Read more...]
A global review of Battery Storage: the fastest growing clean energy technology today
The IEA report “Batteries and Secure Energy Transitions” looks at the impressive global progress, future projections, and risks for batteries across all applications. 2023 saw deployment in the power sector more than double. Strong growth occurred for utility-scale batteries, behind-the-meter, mini-grids, solar home systems, and EVs. Lithium-ion batteries dominate overwhelmingly due to continued cost reductions and performance improvements. And … [Read more...]
The benefits of Vertical-Axis Wind Turbines: omnidirectional, close-packed, easier to maintain + more
Most wind turbines are “horizontal axis,” pointing into the direction of the wind. “Vertical axis” turbines can capture wind energy from any direction, but current designs are less efficient and so get little attention and investment. Andrea Montanari at ECECP looks at innovative companies around the world that are trying to leverage the other advantages they have over the dominant horizontal versions. They are more stable (lower centre of … [Read more...]
Solar PV technology improvements are rapid. But how do you test the long-term reliability of the new designs?
Solar PV module technology moves fast, and is delivering improvements continuously. So fast that it’s no trivial matter to judge the long-term reliability of the changes. It’s a crucial issue as modules, once deployed, are expected to deliver results over lifetimes that span decades. Sara Fall and Jarett Zuboy at NREL describes a process designed to identify and address potential reliability problems quickly, before they are observed in the … [Read more...]
China’s CATL to cut its EV battery costs by up to 50% this year, heralding a price war
China’s CATL, the world’s largest producer of EV batteries, is saying it will slash the cost of its batteries by up to 50% this year as part of a price war with China’s second largest maker, BYD subsidiary FinDreams. The main cause is the overproduction of batteries in China: the oversupply means prices must fall. Muhammad Rizwan Azhar, Waqas Uzair and Yasir Arafat at Edith Cowan University look at the causes and implications, but add that … [Read more...]
ReDREAM pilot: mobile app for real-time green energy availability, prices, to control your usage
We already have the technology to allow households to monitor and control their energy usage so they can run individual appliances when the energy is cheapest and greenest. It just needs to be tested and then deployed at scale. Luca Arfini, writing for ESCI, describes the EU-funded ReDREAM project where over 700 people in four countries have had the monitoring installed in their homes, and been given the mobile app to control their usage. … [Read more...]
Danone to cut its methane emissions 30% by 2030: 58,000 dairy farms across 20 countries
Danone has pledged to cut its methane emissions by 30% by 2030 in its fresh milk supply. That makes it only one of three of the world’s top sixty livestock producers to have set a target. Methane has driven 28% of human-caused climate change, with almost a third of that from livestock. The key strategies are “improving herd and feed management, reducing manure-related emissions, and developing innovative methane inhibitor solutions.” The big … [Read more...]
Study: Marine Carbon Removal, and the Offshore Wind and Wave Energy to power it
Ocean-based carbon dioxide removal makes a lot of sense. The oceans are already carbon sinks that absorb about 30% of global carbon emissions. And the concentration of CO2 is higher in water than in air. Caitlin McDermott-Murphy at NREL looks at a new study of the technologies under development, and the opportunities for offshore wind and wave energy to power it. There are nature-based solutions like vast seaweed or algae farms. There are also … [Read more...]
Tandem solar cells (perovskite + silicon) can reach 40% energy conversion rates
Tandem solar lays new perovskite cells over standard silicon cells. Perovskite absorbs the shorter wavelengths of light that silicon misses. So the thin layer of perovskite collects the visible wavelengths, and lets the near-infrared light through to the silicon underneath. Martina GrĂĽnwald and Sarah Michaud writing for the WEF point at the results of R&D and demonstrations in Germany, Switzerland, Saudi Arabia and China. Energy conversion … [Read more...]
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