Sila’s $1.4bn Pentagon battery loan, announced Friday by the US Department of Defense, puts the Washington state startup at the centre of a broader American push to build a battery supply chain that doesn’t run through Beijing. It’s a large bet on a relatively young factory, and the defence establishment is clearly willing to write the cheque.
Why the Pentagon Is Paying for a Battery Factory
The context matters here. Most lithium-ion battery anodes rely on graphite, and the supply chain for that material is dominated by Chinese companies. Silicon-based anodes offer a route around that dependency, and Sila’s plant in Moses Lake, Washington, is one of the few operating sources of anode material that sits outside the reach of tariffs or geopolitical disruption.
The factory began operating in September and currently produces around 2 gigawatt-hours of anode material annually. Sila plans to expand it fivefold, which would generate enough material for more than 100,000 electric vehicles. The Pentagon loan is intended to help fund that scale-up.
The loan sits within the Department of Defense’s Office of Strategic Capital (OSC) loan programme, which was funded by the One Big Beautiful Bill Act that President Trump signed on 4 July 2025. According to a DOD Office of Strategic Capital announcement, that legislation provided the OSC with $500 million in credit subsidy funding, unlocking up to $100 billion in available loan capacity for critical minerals production and related industries. Sila’s loan is an early draw on that pool.
Silicon anodes store 20% to 40% more electricity than conventional graphite equivalents. That improved energy density means either longer-lasting cells or smaller, lighter batteries. For defence applications, drones in particular, the weight arithmetic is compelling. For EVs, range is the obvious prize.
Sila Pentagon Battery Loan Follows a Busy Few Months of Fundraising
The DOD loan lands just weeks after Sila closed a $300 million private equity round on 21 July 2026, led by Atreides Management and Sutter Hill Ventures. GeekWire reported that 8VC, Bessemer Venture Partners, Matrix Partners, and funds and accounts advised by T. Rowe Price Associates also participated, alongside other existing and new investors.
Prior to that July round, Sila had raised $1.3 billion and was valued at close to $2 billion two years ago, according to PitchBook data cited by GeekWire. The company’s total private funding now exceeds $1.5 billion, according to PitchBook. Sila employs around 400 people.
The July round, described in Sila’s own press release, was aimed at ramping ‘gigascale anode manufacturing’ and strengthening ‘America’s technology sovereignty.’ The Pentagon loan, arriving so quickly after, suggests the government found that framing persuasive. Or at least fundable.
Sila already has supply agreements in place with Mercedes and Panasonic. The DOD relationship could open a parallel pipeline into defence contractors, whose own procurement budgets have expanded as conflicts in Ukraine and the Middle East continue to drive hardware demand.
Sila is not alone in the silicon anode space. Group14 and Amprius are both pursuing similar material science, and the competitive pressure is real. Being the company with an operational US factory and a Pentagon loan on the books is, for now, a meaningful differentiator.
Three Other Companies Also Received DOD Funding
Friday’s announcement covered four deals in total. Sunrise Energy Metals, an Australian firm, will receive a $400 million loan to mine scandium, a rare earth element used in lightweight alloys. Minnesota-based Niron Magnetics landed $150 million to produce rare earth-free magnets for smartphones, missiles, and electric motors. Strategic Bauxite received an $85 million equity investment for mining bauxite, a primary source of aluminium.
Taken together, the four transactions sketch out a clear procurement priority: the US wants domestic or allied-nation supply of the materials that go into batteries, motors, and airframes. Sila Nanotechnologies drew the largest cheque in the package. Whether its Moses Lake expansion delivers on that confidence will become clearer once the fivefold capacity increase moves from planning into production.
