The article discusses using a solid oxide cell (SOC) to store electricity as hydrogen and produce electricity, water, and heat. This technology can be used for hydrogen production, power-to-gas, energy storage, and power generation. By electrolyzing steam and CO2, synthesis gas can be made into fuels like methane, gasoline, or diesel. The high operating temperature and ability to reuse waste heat lead to high electrical efficiency. The researchers are testing SOC stacks for long-term performance in different operating modes, like electrolysis and reversible operation. They are also evaluating SOCs for co-electrolysis of CO2 and H2O to make synthetic fuels. The goal is to understand degradation processes and improve the technology for practical use.