Contrary to expectations, the U.S. Space Force is giving SpaceX latitude to design its secure next-generation low-Earth orbit satellite network, the Space Data Network. SpaceX will be responsible to look after the performance floors for coverage, capacity, and throughput, rather than simply prescribing how many spacecraft must fly or how they’re configured. SpaceNews reported the approach from National Harbor, Maryland, on 16 September 2026, framing the network at about $2.3 billion.
For a defence program, this is a considerable amount of free design latitude, as these types of programs are usually tightly controlled to prevent cost overruns and ensure that capabilities meet government or military design specifications.
Performance Floors, Not A Prescribed Fleet
For anyone following SpaceX’s defence constellation work, the flexibility in the design architecture is the difference here. Instead of flying a government-designed and built spacecraft, SpaceX can now size and configure the SDN LEO network to hit the stated performance requirements that the U.S. Space Force has requested.
This essentially means that the Space Force sets the line on what coverage, capacity, and throughput they need, and SpaceX designs the entire constellation from scratch. Essentially, the government is now asking for the requirements, and letting the contractor fill them on their own, rather than leaning into the details.
At this time, all of that information on what the Space Force requires or has requested is firmly a confidential matter, just like most defence-focused space news. SpaceX, however, will be working closely with the Space Force on the design and satellite count. After all, a multi-billion-dollar LEO data system can be built out several different ways, and SpaceX’s proposals will be analyzed and approved before they’re given the go-ahead to build and launch.
One of the biggest aspects to this is that the design can define the launch cadence, and that’s true for any satellite constellation. If SpaceX wants, they could design the new satellites to fit in Starship, rather than in Falcon 9 or Falcon Heavy. The freedom to do so is exactly what this change in contract now permits.
Same Multi-Billion SDN Effort
SpaceX previously won a $2.29 billion Space Force contract in May 2026 for the SDN Backbone, which is built around providing the Space Force the sensor capabilities it needs to support military actions. Today’s $2.3 billion SDN also sits on that same program family, rather than replacing it with a new dollar figure from scratch.
This really means that this is a contract amendment, and not another multi-billion-dollar contract ontop of another, pre-existing one. SpaceX has been working closely with the Department of Defence on their Starshield program, as well as providing Grok through SpaceXAI for government and military use.
