Rising costs for the U.S. missile space shield.
General Michael Guetlein, the American Space Force officer responsible for the vast Golden Dome missile defense project, has estimated the cost of the first phase at $185 billion, an increase of $10 billion. “We were asked to acquire additional space capabilities, so we arrived at $185 billion for the target architecture,” the military official said during a conference in Washington on Tuesday. The program manager added that Lockheed Martin, RTX, and Northrop Grumman have joined the project as main contractors.
The project’s goals are to “deter and defend citizens and critical infrastructure from any foreign aerial attack on national territory.”
The program is still in its early stages, with funding and political directives already defined, but with limited public details on the final project. The Pentagon has refused to disclose details about initial tests of potential concepts or prototypes of land, naval, or space weapons.
The missile shield project announced a year ago by the U.S. president is considered a priority of the Trump administration. However, according to American lawmakers, the Pentagon has not provided budget details and justifications for the $23 billion allocated to the program under last year’s reconciliation bill, reported earlier this year by Breaking Defense.
The cost increase highlights the enormous, and imprecise, ambitions of Golden Dome, notes Bloomberg. Furthermore, experts say the actual cost will likely be much, much higher, comments Defense One.
All the details.
WHAT IS THE GOLDEN DOME
On Pete Hegseth’s first day as Secretary of Defense and just days after his return to the White House in January, on January 27, 2025, President Trump signed an executive order to introduce a new missile defense system, initially named American Iron Dome. Inspired by Israel’s Iron Dome air defense system, Trump wrote in the executive order that the new American missile defense system must be able to address “The threat of ballistic, hypersonic, and cruise missile attacks, and other advanced aerial attacks,” because “it remains the most catastrophic threat the United States faces.”
The “Golden Dome” project echoes the failed “Star Wars” program of President Ronald Reagan, criticized for being overly ambitious and for diverting funds from other national priorities.
Thus, Golden Dome is a proposed missile defense architecture to protect national territory from ballistic, hypersonic, and cruise missile threats, integrating sensors, interceptors, and terrestrial, aerial, and space command and control systems into a unified network. The concept includes a broad layer of space satellites for tracking and target identification, along with new interception technologies. Additional space elements are designed to detect, track, and potentially counter threats from orbit. These would include advanced satellite networks and orbital weaponry, still under debate, notes Reuters.
“STELLAR” COST ESTIMATES
President Donald Trump initially estimated the project cost at $175 billion, although independent analysts suggest the total figure could be much higher.
At the McAleese Defense Programs Conference in Arlington, Virginia, General Guetlein identified three programs that would benefit from the estimated additional $10 billion funding: the Advanced Missile Tracking Initiative, a space data network, and the Hypersonic and Ballistic Tracking Space Sensor, known as HBTSS. The HBTSS is a space sensor system designed to detect and track hypersonic and ballistic missile threats. Its inclusion in the accelerated funding package signals the Pentagon’s urgency to acquire persistent aerial tracking capability as adversaries expand their hypersonic arsenals.
At the same time, Guetlein dismissed external estimates placing the program’s potential cost beyond $1 trillion, arguing that such figures are based on applying costly autonomous combat systems, designed for overseas operations, to a national defense mission that requires a fundamentally different and more economical approach.
THE TIMELINE
So while the military official in charge of the project seems confident about the costs, he showed less certainty regarding the timeline.
President Trump has requested that Golden Dome be “fully operational” by 2028, a timeline Guetlein contested. He stated he wants to demonstrate “operational capability” by that year but is considering 2035—six years after the end of Trump’s second term—for the version that will fit within the $185 billion cost structure.
LOCKHEED MARTIN, RTX, AND NORTHROP GRUMMAN LEADING GOLDEN DOME COMMAND AND CONTROL WORK
Also at yesterday’s conference, the Space Force general indicated that Lockheed Martin, RTX, and Northrop Grumman are three of the main contractors collaborating with six other companies to develop the Golden Dome command and control (C2) layer.
PROJECT CHALLENGES
Regarding the project’s progress, Guetlein explained that there have been “numerous successful tests that I cannot discuss in this context.” However, he acknowledged that the biggest risk lies in trying to shoot down missiles in space in a cost-effective manner.
“Technology is not the problem, but scalability and economic accessibility,” he highlighted. “The real challenge will be to develop these solutions quickly and cheaply enough to make them effective against the threat.”
EXPERT COMMENTARY
Meanwhile, for this massive project in its initial stages, the cost has just increased by $10 billion, and experts fear this is only the beginning.
At Defense One, Todd Harrison, senior researcher at the American Enterprise Institute who has studied Golden Dome’s likely costs, stated that the $185 billion figure indicated by Guetlein probably includes only a basic capability for space interceptors, which is considered the most expensive and ambitious part of the project. Moreover, he added, this is just the start of expenses.
“As I understand it, this is only the short-term cost to acquire an initial level of capability. It is not the total acquisition cost and does not include long-term operating and replenishment costs,” Harrison emphasized. “It is also a good indicator that space interceptors will represent a relatively smaller part of the architecture, assuming they pass the demonstration phase.”
Given Guetlein’s budget estimate, it is unclear how much role space interceptors will have in the final architecture, Victoria Samson, director for space security and stability at the Secure World Foundation, also observed to Defense One. “Honestly, it won’t be cheap, but the largest cost item will be space interceptors,” Samson said. “This element will drive costs up, depending on how far the project decides to proceed.”
