CO2 Batteries That Store Grid Energy Take Off Globally
These innovative CO2 batteries from Energy Dome promise long-duration energy storage for the grid, and reliable 24/7 clean power for data centers.
So storing the excess for use when these resources are scarce just makes sense. LDES also makes the grid more reliable by providing backup and supplementary power. The problem is that even the best new grid-scale storage systems on the market—mainly lithium-ion batteries—provide only about 4 to 8 hours of storage.
Other grid-scale battery chemistries and approaches are in development, such as sodium-based, iron-air, and vanadium redox flow batteries. But the energy density, costs, degradation, and funding complications have challenged the developers of those alternatives.
All this excitement is based on Energy Dome's one full-size, grid-connected plant in Ottana, Sardinia, which was completed in July. It was built to help solve one of the energy transition's biggest challenges: the need for grid-scale storage that can provide power for more than 8 hours at a time.
Luigi Avantaggiato Lithium-ion battery systems could be increased in size to store more and last longer, but systems of that size usually aren't economically viable. Other grid-scale battery chemistries and approaches are in development, such as sodium-based, iron-air, and vanadium redox flow batteries.
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