Large-scale CO2 battery plant comes online in Italy – pv magazine International


Energy Dome has built its first pilot plant in the Italian province of Nuoro. He said the battery was performing to expected standards for long-duration and round-trip efficiency and that he planned to build another full-scale commercial facility with a capacity of 20MW/200MWh by the end of the year. end of 2023.

Italian company Energy Dome has commissioned its first carbon dioxide (CO2) battery installation at an unspecified location in the Italian province of Nuoro, on the island of Sardinia, Italy.

“Energy Dome will commercially operate the plant on the Italian grid,” a company spokesperson said. photo magazine. “The commercial demonstration plant is expected to be commercially operated on the power grid, providing the most needed regulating services on the power grid as stand-alone storage. The electricity needed to recharge the plant is drawn from the national grid.

According to the company, the pilot is currently delivering expected performance in terms of long-term storage and round-trip efficiency. “The Sardinia demonstration project has proven this innovative process using off-the-shelf equipment available from a globally established supply chain, demonstrating that rapid global deployment of the CO2 battery is now possible without bottlenecks. throttling,” he said in a statement, without giving further details on the project.

Energy Dome, however, said it plans to build its first large-scale 20MW/200MWh commercial power plant soon and complete construction by the end of 2023. “To achieve this, Energy Dome has enlisted a team of turbomachinery, process engineering and power experts with proven experience in designing new turbines and building over 500MW of power projects,” he explained.

The company recently entered into a cooperation agreement with the Italian utility A2A for the construction of a 20 MW facility with a storage capacity of five hours. It has also signed an agreement with the industrial conglomerate Ansaldo to develop and build long-term energy storage projects in Italy, Germany, the Middle East and Africa.

The Energy Dome battery is based on compressed CO2 and, according to the manufacturer, it requires less space than systems based on compressed air. “The concept is the same as compressed air energy storage (CAES) and liquid air technologies,” said Energy Dome CEO Claudio Spadacini. photo magazine in a recent interview.

The system extracts CO2 from an inflatable atmospheric gas tank, which the company calls the “dome”, and stores it under a pressure of 70 bar at room temperature in a high-density liquid state. When the stored energy is needed, the CO2 is evaporated and transported through a turbine which generates electricity. After the implementation of this process, the CO2 returns to the atmospheric gasometer to be reused for another storage cycle, without any emissions into the atmosphere.

The Energy Dome battery won the Bloomberg New Energy Finance (BNEF) Pioneers 2022 technology competition.

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