Rocket Lab Corporation and Japanese SAR satellite firm Synspective have agreed on an additional 10 dedicated launches aboard Rocket Lab’s Electron vehicle, raising their total contracted missions to 21. According to Rocket Lab, this is the largest single-customer order of dedicated Electron flights to date.

Rocket Lab has served as Synspective’s exclusive launch provider so far, having already deployed six StriX synthetic aperture radar (SAR) satellites from its New Zealand launch site. The new agreement stipulates that all 21 missions will also launch from that same facility, leveraging Rocket Lab’s flexible scheduling, tailored service, and streamlined operations.

Sir Peter Beck, Rocket Lab’s founder and CEO, commented that predictable and dependable launch access is vital for Synspective’s constellation expansion and added that Electron has been central to their progress to date. Meanwhile, Synspective’s founder and CEO, Dr. Motoyuki Arai, praised Rocket Lab’s consistency, noting that the extended contract is key to accelerating deployment of their SAR network and data services.

Rocket Lab emphasized that Electron’s reputation for reliability, fast timeline execution, and precise satellite deployment has helped it attract constellation customers. The company noted that many of its flights this year either extend existing multi-launch commitments or complete constellation rollouts within a year.

With this deal, Synspective plans to launch up to 21 StriX satellites by decade’s end. The SAR constellation is designed to support applications such as disaster response, environmental monitoring, and security operations. Rocket Lab also pointed out that while Electron remains their workhorse for small satellite launches, their broader portfolio includes spacecraft, payload systems, and the in-development Neutron vehicle for medium-lift missions.