Arinna

Based in the US, Arinna designs and produces innovative solar technology tailored for space infrastructure, meeting the energy demands of the expanding space economy. Founded in 2024 and headquartered in South San Francisco, US, Arinna focuses on developing advanced solar solutions for space applications. The company has completed one deal, with its most recent funding round being a Seed round in March 2026, raising USD 4. 00 mn led by Spacecadet Ventures and with contributions from Anorak Ventures and Breakthrough Energy Ventures.

The total amount raised by Arinna to date is USD 8. 00 mn, reflecting its strategic position in the space sector. Arinna specializes in the development of ultra-thin, flexible solar technology engineered for the unique challenges of space infrastructure. This proprietary technology enhances power-per-mass capabilities while ensuring radiation hardness, suitable for extreme environments.

The primary application is to cater to the energy demands of the space economy, projected to require 3 GW of power in orbit by 2035. Arinna aims to replace traditional solar models that are often too heavy and costly for effective space use, serving a diverse clientele including private space enterprises and governmental agencies across North America, Europe, and Asia. Arinna generates revenue through direct partnerships and B2B transactions within the space sector, offering scalable solar technology for various applications. The company structures its revenue through negotiated contracts based on bulk orders and ongoing support services, potentially including milestone payments tied to product delivery.

While specific pricing plans are undisclosed, the flagship solar technology is expected to drive significant revenue within the evolving space economy. Following its recent Seed funding round on March 25, 2026, Arinna plans to utilize the USD 4. 00 mn raised to develop and qualify ultrathin solar panels made from new materials designed for spacecraft use, preparing for future scaled manufacturing. The company aims to expand its market reach, targeting new geographic regions and securing partnerships by 2028.