Interesting, a sort of artificial photosynthesis; converting CO2 + water + nutrients into edible food.<p>Edit: Found an interview with the founder: <a href="https://www.youtube.com/watch?v=_Iv0857U3UE" rel="nofollow">https://www.youtube.com/watch?v=_Iv0857U3UE</a>. Basically the idea seems to be to grow bacteria and use them for food instead of plants. Bacteria can probably be grown much more efficiently than plants can, so that saves on a bunch of resources.
They are cultivating bacteria using water (that is cheap in some places), CO2 (that is free but it has a low concentration) and electricity (that is never free).<p>This is equivalent of cultivating plants in a hydroponic system and using leds to illuminate them. Plants make food that appear from thin air.<p>The problem is that unless you can sell the product at a high price, the cost of the electricity is too high. So it is used in very special cases, not for staple food.
> <i>...is planning to bring to market a new protein powder, Solein, made out of CO₂, water and electricity</i><p>Huh... Literally from "thin air".