Open database analysis of scaling and spatio-temporal properties of power grid frequencies ||

The energy system, and in particular the electricity system, is undergoing rapid changes due to the introduction of renewable energy sources, to mitigate climate change. To cope with these changes new policies and technologies are proposed and a range of business models are implemented in various energy systems across the world. New concepts, such as smart grids, flexumers, or prosumers, are developed and tested in pilot regions. Still, studies rarely systematically compare different approaches, data, or regions, in part because freely available research data are lacking.

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Discovering more efficient storage of green energy |

“Today on a solar farm or a wind farm, storage is typically provided with batteries. But batteries are expensive, and can typically only store a fixed amount of energy,” says Sargent. “That’s why discovering a more efficient and highly scalable means of storing energy generated by renewables is one of the grand challenges in this field.”

This device efficiently splits water into its component elements, hydrogen and oxygen, storing energy as H2. The key is a new catalyst based on abundant metals tungsten, iron and cobalt, that is three times more efficient than the current state-of-the-art.

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