Boeing, global aerospace company,has unveiled a 3D-printed solar array substrate that reduces build times by up to six months and cuts production cycles by 50%. The first arrays are set to carry Spectrolab solar cells aboard small satellites built by Millennium Space Systems, both subsidiaries of Boeing. Flight-representative hardware was tested and is moving through the qualification process for customer missions. The design prints harness paths and attachment points directly into panels, replacing dozens of separate parts and tooling. This approach allows parallel assembly with cell production, supported by robot-assisted assembly and automated inspection at Spectrolab. Boeing has already used more than 150,000 3D-printed parts across its portfolio, including 1,000 radio-frequency parts per Wideband Global SATCOM satellite. The arrays are expected to scale up to Boeing 702-class spacecraft by 2026.