Rheinmetall's Baltic Ammunition Arc: From Baisogala to a Pan-European Shell Network

TL;DR: Rheinmetall broke ground on a 155mm shell plant in Baisogala, Lithuania, in November 2025 — one node in a pan-European ammunition network spanning eight countries and targeting 1.5 million shells per year by 2027. The binding constraint is not factory floor space but explosives and propellants: Europe depends on a single major TNT producer and globally scarce nitrocellulose. Lithuania, spending 5.38 per cent of GDP on defence in 2026, is building an entire industrial ecosystem around this facility — from tank assembly to a state defence holding. The question is whether the energetics supply chain can keep pace with the factory construction.

Rheinmetall broke ground on a EUR 300 million 155mm artillery shell production facility in Baisogala, central Lithuania, on 4 November 2025 — attended by President Nauseda, Prime Minister Ruginiene, and Rheinmetall CEO Armin Papperger. The 340-hectare site, operated by joint venture Rheinmetall Defence Lietuva with Lithuanian state energy company EPSO-G as partner, is projected to produce 35,000 shells by mid-2026, ramping to 100,000 per year by 2027. A companion Centre of Excellence for propellant charges, signed the same day, will manufacture energetic components with output projected in the hundreds of thousands annually.

The plant is not a standalone investment. It is one node in a Rheinmetall ammunition network that now spans eight countries, with a corporate target of 1.5 million 155mm shells per year by 2027 — a figure that would make a single German company the largest artillery ammunition producer in the Western world.

1. The Pan-European Shell Network

The Baisogala plant is best understood not in isolation but as part of Rheinmetall's decentralised production architecture — a deliberate strategy to distribute manufacturing across NATO's eastern and southern flanks, reducing single-point-of-failure risk and shortening supply chains to the forces most likely to consume the ammunition.

Rheinmetall is not alone. KNDS Belgium inaugurated a third automated 155mm line in November 2025. Nammo is investing in a tenfold production increase at Raufoss, Norway, operational by end of 2026. BAE Systems' Glascoed plant in Wales will boost 155mm output sixteenfold, though it is already six months behind schedule after a mid-2025 decision to double capacity. Poland received PLN 2.4 billion in state funding to reach 150,000 shells per year by 2027.

Aggregate European production is projected to reach 2.8 to 3 million 155mm shells annually by 2026 — an eightfold increase from 2022 levels. Whether this closes the gap depends on consumption: Ukraine fires 5,000 to 7,000 shells daily, and Russia produces approximately 250,000 rounds per month.

2. The Energetics Bottleneck

The binding constraint on all of the above is not factory floor space. It is explosives and propellants.

Europe depends on a single major TNT producer — in Poland. Global nitrocellulose supply is constrained; Rheinmetall acquired Hagedorn-NC in 2025 specifically to secure this input. CEO Papperger has stated publicly that propellant production needs to double from 10,000 to 20,000 tonnes per year. France restarted explosive powder production at Eurenco Bergerac in 2025 — the facility had been dormant since 2007.

This is why Rheinmetall's investment pattern has shifted. The company is spending as heavily on propellant and energetic materials facilities — Romania (EUR 535 million), Lithuania's Centre of Excellence, Bulgaria's gunpowder lines — as on shell forging and filling plants. The Baisogala companion facility for propellant charges is not an afterthought. It addresses the bottleneck that will determine whether the 1.5-million-shell target is achievable or aspirational.

3. Lithuania's Defence Industrial Transformation

Baisogala sits within a broader Lithuanian strategy that has no parallel among NATO's smaller member states. Lithuania's 2026 defence budget of EUR 4.79 billion — 5.38 per cent of GDP — represents a 43 per cent increase over 2025 and places the country at or near the top of the alliance in spending as a share of national output.

The spending is not abstract. It is translating into a domestic industrial base:

The pattern is deliberate: Lithuania is not merely buying foreign equipment. It is building co-production partnerships that anchor German and Nordic defence industrial capacity on its territory — 150 kilometres from Kaliningrad.

4. The Baltic Ammunition Corridor

Lithuania is not acting alone. Latvia signed a EUR 275 million deal with Rheinmetall in September 2025 for a mirror-image 155mm plant, with construction beginning spring 2026. Estonia is spending approximately 5.4 per cent of GDP on defence and has launched a EUR 100 million DefenceTech Fund. All three Baltic states committed to sustaining 5 per cent of GDP or above through 2030.

What is emerging is not three national defence budgets but a coordinated Baltic defence-industrial corridor:

• Joint CV90 procurement across six Nordic-Baltic nations — aligned requirements, shared production contracts
• A Baltic Defence Line — joint fortification programme for border infrastructure
• Coordinated defence spending floors (5 per cent GDP minimum) creating a predictable demand signal for industry
• Government target: triple Lithuanian defence exports, generating over EUR 1 billion in sector value by 2030

The Atlantic Council has described the Nordic-Baltic bloc as "Europe's reliable security engine." The Carnegie Endowment characterised the approach as "regional pragmatism in Northeastern Europe" — a strategy of building defence-industrial capacity where the threat is closest, rather than waiting for centralised EU mechanisms.

5. What Baisogala Signals

The significance of the Baisogala plant is less about one factory and more about what the investment pattern reveals.

First, Rheinmetall has made a strategic bet that ammunition demand is structural, not cyclical. The company is not hedging — it is building eight factories across eight countries simultaneously. The implicit assumption is that European defence budgets will sustain current trajectories through the end of the decade and that NATO's ammunition consumption baseline has permanently shifted upward.

Second, the decentralisation is itself a capability. Distributing production from Spain to the Baltics to South Africa means no single strike, no single political decision, and no single supply chain failure can halt output. This is industrial resilience by design — a lesson drawn directly from the early months of the Ukraine war, when centralised European stockpiles proved shockingly thin.

Third, the energetics bottleneck determines whether any of this works at scale. Europe's shell forging capacity is expanding faster than its ability to fill those shells with explosives and propellants. Rheinmetall's parallel investment in propellant facilities in Romania, Lithuania, and Bulgaria suggests the company understands that the constraint has moved upstream — from the factory floor to the chemical plant. Whether that constraint is resolved by 2027 is the open question on which the 1.5-million-shell target rests.

Lithuania, 150 kilometres from a Russian military exclave, has decided that the answer to Europe's ammunition deficit is not coordination studies or procurement frameworks. It is concrete, factory floors, and production lines — built fast, built locally, and built to scale.

Sources and Further Reading

• Rheinmetall: Groundbreaking ceremony for munitions factory in Lithuania
• LRT: Rheinmetall ammo plant to be launched by mid-2026
• Lithuanian MoD: Record defence budget 2026
• Rheinmetall: Latvia orders ammunition factory
• Defence Industry Europe: Rheinmetall Expal reaches 450,000 annual output
• Carnegie Endowment: Regional pragmatism in Northeastern Europe
• Atlas Institute: The Strategic Ammunition Gap