The Energy Dome, now launched in Sardinia. Image credit: energy dome
An Italian company has its first major “CO2 battery” factory that claims to store massive amounts of renewable energy and deliver it quickly to the grid when needed. Energy Dome provides their solution for the use of CO2 instead of lithium, energy storage will be possible at a much lower cost than traditional counterparts, and the first grid-level facility is now open to test their claims.
The facility will be a huge step towards both 100 percent renewable energy targets and solving the massive amounts of CO2 produced by industrial and daily processes.
So, how does an Energy Dome work? Carbon dioxide is gaseous at room temperature and pressure, and Energy Dome stores this gas in a huge flexible bladder, creating the dome. To charge the battery, CO2 is extracted from the dome and forced into a compressor, where it places the gas under a pressure five times greater than Earth’s atmosphere. Under these conditions, CO . will2 becomes a liquid, which is stored in pressurized tanks for later use.
When the energy is needed, the liquid CO2 is heated until it vaporizes back into a gaseous state before being forced through a turbine. Energy is drawn into the grid and the giant bladder is refilled, ready to be recharged.
The system produces no emissions to the atmosphere, is relatively cost effective and is highly efficient thanks to a system that captures the heat produced during charging and uses it for discharging. According to Energy Dome, this results in about 75 percent efficiency for a round trip, and the total system is about half the cost of a lithium solution.
While Energy Dome may not be the cheapest energy storage solution, most other options have the major drawback of releasing energy slowly, often making them respond late during times of increased energy demand. the CO2 solution is able to quickly supply energy to the grid.
The first Energy Dome has now been commissioned in Sardinia, Italy, where it will undergo final testing before entering the commercial scale phase.
“I am proud of our dedicated team and our results. We can now provide an answer to the most pressing problem of our time: climate change,” said Energy Dome founder and CEO Claudio Spadacini in a statement.
“Our groundbreaking technology, the CO2 Battery, is now commercially available to deploy cost-effective renewable energy worldwide.”
Energy Dome states that they have now signed an agreement to create large storage facilities in Italy, Germany, the Middle East and Africa in the coming years.