Wind and solar need cheap, long-duration storage to even out its inherent weather-determined intermittency. Deborah Halber, writing for MIT News, describes the development of iron-air batteries. Iron is cheap and available worldwide. Storage duration is multi-day. They are much heavier and take up more space than lithium-ion batteries, but that doesn’t matter for immobile grid storage. The target price tag of $20/kWh (one-tenth the cost of … [Read more...]
France’s €100/month EV “social leasing” plan was oversubscribed, then closed. How to keep the momentum going
On January 1st France launched its flagship EV “social leasing” programme, at a typical price of €100/month, targeting 25,000 users. Within six weeks it was oversubscribed, forcing the government to close the scheme and alter the subsidy regime to accommodate the new total of 50,000. The programme’s popularity demonstrates its relevance and justifies its future expansion. However, the system needs to change if it is to meet the challenges … [Read more...]
Infrared Fabric heat-emitting “wallpaper” avoids the disruption and expense of Heat Pumps
Hundreds of millions of buildings across the world need clean heating. But retrofitting them all for heat pump installation is going to be expensive, disruptive, and take a long time. Michael Siebert at Nottingham Trent University describes a completely different approach, using new high-tech infrared fabrics that emit heat. Made of graphene, they can be installed as easily as wallpaper. The radiated heat can be felt instantly, unlike the slow … [Read more...]
Green Steel: pathways for the new hydrogen-powered DRI-EAF projects
H2-DRI-EAF uses hydrogen (H2) to produce direct reduced iron (DRI), which is then processed in an electric arc furnace (EAF) to produce steel. The two main challenges are ensuring an adequate supply of DR-grade iron ore, and cutting the end-to-end cost of making hydrogen. But right now, clean green hydrogen production is in its infancy, and therefore so are green steel plans. Soroush Basirat at IEEFA surveys the landscape, looking at the U.S., … [Read more...]
Buildings: how can Europe reduce emissions from Construction?
11% of global energy-related carbon emissions are embedded in the construction of buildings. Though focus has been on reducing operational emissions (28%, from heating and cooling, power etc.) there is not enough attention paid to construction, explains Carolina Kyllmann at CLEW. She looks at all the issues, including production of materials, transport to the site, construction, renovations, demolition and reuse of materials, and more. Kyllmann … [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...]
Organic cathode can replace Cobalt in Batteries: similar performance, faster charging, cheaper to make
In most lithium-ion batteries, the cathode contains cobalt. But cobalt is a scarce metal, found mostly in politically unstable countries, its extraction is hazardous for miners and generates toxic waste. And as demand for batteries globally keeps rising, so too will the cost of cobalt. Anne Trafton at MIT describes the development of an alternative cathode made of organic materials. Its structure is similar to graphite. It can conduct electricity … [Read more...]
Batteries are still getting exponentially cheaper, more efficient: ready to displace half of global fossil fuel demand by 2045?
A new report by RMI says batteries are on the path to replace 175 EJ of fossil fuel demand in the power sector, 86 EJ of fossil fuels from road transport and can put at risk another 23 EJ from shipping and aviation. That equates to a phaseout of half of global fossil fuel demand in the next two decades. Daan Walter, Sam Butler-Sloss and Kingsmill Bond at RMI summarise the findings in six graphs with explanations. Battery sales are growing … [Read more...]
Geothermal Heat Pumps at scale avoid the cost of expensive long-distance transmission lines
A new analysis reveals that installing geothermal heat pumps in 70% of U.S. buildings can reduce the need for new long-distance transmission lines by 33%, explains Kelly MacGregor at NREL. The main message is that, though geothermal deployment is seen as expensive, the avoided costs are significant. Those transmission lines won’t be needed because geothermal is always local and can be deployed in both urban and rural places. Though the widespread … [Read more...]
Global inflation: high borrowing costs threaten the continued growth in Renewables. What must be done?
Over the last decade, investors and governments got used to two supportive trends: relatively cheap capital from low interest rates, and steadily falling costs. However, this changed as the world emerged from the Covid pandemic and into the global energy crisis. In a new era of high interest rates, the impressive growth in renewables deployment is under threat, explain Tim Gould, David Fischer, Paolo Frankl and Heymi Bahar at the IEA. Renewables … [Read more...]
Building and financing the expansion of Europe’s electrical interconnection market
In the first of a series of four articles covering the expanding market for electrical interconnections in Europe, Jean-Baptiste Vaujour at the Emlyon Business School sets the scene by presenting the main points and current developments around the difficulties of building and financing these assets. Interconnectors allow power to be sent across borders to meet the shortfall where supply is not meeting demand. For example, European electricity … [Read more...]
Four net-zero opportunities for 2024: wind, solar, lab-grown meat, positive tipping points
Will de Freitas at The Conversation draws attention to four reasons to celebrate 2023 and their implications for our drive to tackle climate change. Most will be familiar with the continued progress made with wind and solar, though they deserve repeating given its immense significance. Wind turbines now stand more than a quarter of a kilometre high, and will get taller. At that size, one turn of the blade will power an average home in the … [Read more...]
Heat Pump + Gas Boiler hybrids can reduce bills and emissions faster than a 100% heat pump roll out
The reduction in buildings emissions is well off track, not least in the residential sector. Something governments and millions of households are well aware of. The problem with replacing a gas boiler with a heat pump is the up-front cost and disruption. Installing the heat pump alone can cost several thousands more than replacing a gas boiler. On top of that, you should properly insulate your home and replace the radiators. Jovana Radulovic at … [Read more...]
Investing billions in new cross-border Electricity Transmission capacity can cover its costs within a few years
The huge divergence of electricity prices between nations after the energy crises of 2021 and 2022 exposed Europe’s pressing need to increase cross-border transmission capacity, explain George Dimopoulos, Conall Heussaff and Georg Zachmann at Bruegel. Without it, generation costs will be higher, emissions too, and new generation will continue to be badly congested. The author’s calculations reveal that one additional MW of cross-border capacity … [Read more...]
New Solar study: 50% of global power by 2050, even without more ambitious climate policies
Nadia Ameli at UCL and Femke Nijsse and Jean-Francois Mercure at the University of Exeter present their study that shows solar is on track to make up more than half of global electricity generation by 2050, even without more ambitious climate policies. This far exceeds any previous estimates: last year’s IEA World Energy Outlook predicted that solar would account for only 25% by 2050. The authors’ macroeconomic model takes the latest … [Read more...]
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