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Carbon dioxide has a bad reputation for its role in climate change, but it could also be used to store renewable energy.
The world's first CO2 battery, built by Energy Dome, promises to store renewables on an industrial scale, which could help green energy compete with fossil fuels in terms of cost and practicality.
The company is bringing its technology to the US after successfully testing the battery at a small scale plant.
An Energy Dome spokesman told Electrek that the US is a primary market for the company. The inflation reduction act will be a key driver for the industry in the short term.
One of the biggest obstacles to the growth of renewable energy is the storage of power. Engineers need to find a way to save excess power when wind and solar aren't always available, or when there's more demand, since wind and solar aren't always available.
Conventional battery technology can be used to store the energy. It's expensive and wasteful to build giant batteries from rare earth minerals.
Energy Dome's CO2 batteries use mostly "readily available materials" such as steel and water.
The battery works by storing CO2 in a giant dome and using excess energy from a renewable source to make a liquid. The stored heat is used to charge the battery.
A turbine that feeds back into the power grid is powered by the stored heat. The entire process is self-contained so no CO2 leaks back into the atmosphere.
It could be a game-changer for renewable energy. Energy Dome wants to build batteries that can hold up to 200 MWh of energy. As it gains traction, we will have to see how it does.
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