Best I could find [1]

> In its dry powered format, Vainikka compared Solein’s nutritional profile to that of soy, algae, or some animal-based proteins. It contains 50% protein with all the essential amino acids, 5-10% fat, 20-25% carbohydrates, as well as Vitamin B.

I am more concerned about the health implication of such foods. I don't think it's enough to say an artificially produced food does not contain any harmful substances. The specific ratios of micronutrients and amino acids and such have unknown impacts on our health, so, this is as scary as it is exciting.

[1] https://www.foodnavigator.com/Article/2019/07/15/Solar-Foods...