Which airline would become the first airline in the world to use Solar (sun-to-liquid) fuel?

Swiss and its parent company, the Lufthansa Group, have partnered with synthetic fuel group Synhelion to use its solar fuel. This will make Swiss the first airline in the world to use sun-to-liquid fuel. Swiss-based Synhelion, which is a spinoff from the Swiss Institute of Technology, has developed a technology for manufacturing sustainable aviation fuel (SAF) from renewable energy sources. The process uses concentrated solar heat to manufacture syngas (synthesis gas) which can then be turned into kerosene. When combusted the solar fuel will only produce as much carbon dioxide as went into its manufacture, helping to cut aviation emissions.