“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...]
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