Arinna is a startup developing solar technology designed for space applications. According to the website, Arinna is building “ultra-thin, truly-flexible solar technology” with high power-per-mass and radiation resistance, which the website states is based on semiconductor research. As reported by TechCrunch, Arinna builds solar cells for spacecraft using ultrathin semiconductor materials. The publication also reported that Arinna raised a $4M seed round in March 2026 led by Spacecadet Ventures, with participation from Anorak Ventures and Breakthrough Energy. Visit the #WebsiteWednesday link in our bio to learn more. #SpaceTech #SolarEnergy #WW