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Aerodynamic wake interactions between wind turbines reduce the total energy produced by wind farms. A flow-physics model, which predicts these negative interactions and the control strategy that minimizes them, is developed and validated. The collective operational strategy produced by optimizing this model increased energy production when implemented at a utility-scale wind farm.
Different policies to decarbonize transport are often enacted at once, such that it can be hard to know whether any particular mix is effective. Koch et al. search for structural breaks in CO2 emissions for European nations as a way of detecting impacts of known and a priori unknown policies.
Manufacturing of perovskite solar cells would benefit from the avoidance of hazardous solvents and multistep processing. Now, Yun et al. report an ethanol-based perovskite precursor solution that does not need an antisolvent step, enabling devices with 25% efficiency.
Solid-state polymers are promising electrolytes for CO2 electrolysers, but when pure water is used as the feed, they typically cannot create a sufficiently alkaline environment to favour multicarbon products. Here the authors use bifunctional ionomers as polymer electrolytes that activate CO2 at the catalyst–electrolyte interface, favouring ethylene synthesis, while running on pure water.
Understanding what drives household-level decisions to keep cooking with polluting cookstoves and fuels must be grounded in theory for sustained change to occur. New research examines the literature through a behavioural model and finds that affordability, technical aspects, and fuel supply are the main drivers of fuel stacking.
Individual operation of turbines in wind farms results in energy losses from wake interactions. Here Howland et al. report on an experimentally validated model to implement collective operation of turbines, which increases the farm’s energy production.
Managing climate risk exposures of assets and loan portfolios is increasingly important for actors within financial markets. This Review examines how such risks affect investor behaviour and hence the wider energy sector, and highlights areas for future research into the interactions between them.
The near-surface structure of oxide electrocatalysts during the oxygen evolution reaction is key to performance but remains elusive. Here the authors use operando X-ray absorption spectroscopy to track the size-dependent catalytic activity of CoOx(OH)y nanoparticles down to 1 nm and their structural changes under reaction conditions.
Hard to decarbonize homes represent a complex problem that has historically been neglected in favour of the lower hanging fruit of easier to treat properties. To enable an equitable net zero transition, we must understand these homes in a holistic manner take into account the impacts of different routes to decarbonization on occupants.
Flexible all-perovskite tandem photovoltaics open up new opportunities for application compared to rigid devices, yet their performance lags behind. Now, researchers show that molecule-bridged interfaces mitigate charge recombination and crack formation, improving the efficiency and mechanical reliability of flexible devices.
Realizing the full potential of clean cooking transitions requires an understanding of fuel stacking in which multiple fuels and stoves are used. Towards this end, Perros et al. analyse the literature on clean cooking interventions through a behavioural model and identify underlying drivers of stacking.