Iris Ferguson is a global adviser to Loom and a former U.S. deputy assistant secretary of defense for Arctic and global resilience. Ann Mettler is a distinguished visiting fellow at Columbia University’s Center on Global Energy Policy and a former director general of the European Commission.

After much pressure, European leaders delayed a decision this week amid division on whether to tighten market access through a “Made in Europe” mandate and redouble efforts to reduce the bloc’s strategic dependencies — particularly on China.

This decision may appear technocratic, but the hold-up signals its importance and reflects a larger strategic reality shared across the Atlantic.

Security, industry and energy have all fused into a single race to control the systems that power modern economies and militaries. And increasingly, success will hinge on whether the U.S. and Europe can confront this reality together, starting with the one domain that’s shaping every other: energy.

While traditional defense spending still grabs headlines, today’s battlefield is being reshaped just as profoundly by energy flows and critical inputs. Advanced batteries for drones, portable power for forward-deployed units and mineral supply chains for next-generation platforms — these all point to the simple truth that technological and operational superiority increasingly depends on who controls the next generation of energy systems.

But as Europe and the U.S. look to maintain their edge, they must rethink not just how they produce and move energy, but how to secure the industrial base behind it. Energy sovereignty now sits at the center of our shared security, and in a world where adversaries can weaponize supply chains just as easily as airspace or sea lanes, the future will belong to those who build energy systems that are resilient and interoperable by design.

The Pentagon already understands this. It has tested distributed power to shorten vulnerable fuel lines in war games across the Indo-Pacific; it has watched closely how mobile generation units keep the grid alive under Russian attack in Ukraine; and it is exploring ways to deliver energy without relying on exposed logistics via new research on solar power beaming.

Each of these cases clearly demonstrates that strategic endurance now depends on energy agility and security. But currently, many of these systems depend on materials and manufacturing chains that are dominated by a strategic rival: From batteries and magnets to rare earth processing, China controls our critical inputs.

This isn’t just an economic liability, it’s a national security vulnerability for both Europe and the U.S. We’re essentially building the infrastructure of the future with components that could be withheld, surveilled or compromised.

That risk isn’t theoretical. China’s recent export controls on key minerals are already disrupting defense and energy manufacturers — a sharp reminder of how supply chain leverage can be a form of coercion, and of our reliance on a fragile ecosystem for the very technologies meant to make us more independent.

So, how do we modernize our energy systems without deepening these unnecessary dependencies and build trusted interdependence among allies instead?

The solution starts with a shift in mindset that must then translate into decisive policy action. Simply put, as a matter of urgency, energy and tech resilience must be treated as shared infrastructure, cutting across agencies, sectors and alliances.

Defense procurement can be a catalyst here. For example, investing in dual-use technologies like advanced batteries, hardened micro-grids and distributed generation would serve both military needs and broader resilience. These aren’t just “green” tools — they’re strategic assets that improve mission effectiveness, while also insulating us from coercion. And done right, such investment can strengthen defense, accelerate innovation and also help drive down costs.

Next, we need to build new coalitions for critical minerals, batteries, trusted manufacturing and cyber-secure infrastructure. Just as NATO was built for collective defense, we now need economic and technological alliances that ensure shared strategic autonomy. Both the upcoming White House initiative to strengthen the supply chain for artificial intelligence technology and the recently announced RESourceEU initiative to secure raw materials illustrate how partners are already beginning to rewire systems for resilience.

Finally, we must also address existing dependencies strategically and head-on. This means rethinking how and where we source key materials, including building out domestic and allied capacity in areas long neglected.

Germany recently gave the bloc one such example by moving to reduce its reliance on Chinese-made wind components in favor of European suppliers. Moving forward, measures like this need EU-wide adoption. By contrast, in the U.S., strong bipartisan support for reducing reliance on China sits alongside proposals to halt domestic battery and renewable incentives, undercutting the very industries that enhance resilience and competitiveness.

This is the crux of the matter. Ultimately, if Europe and the U.S. move in parallel rather than together, none of these efforts will succeed — and both will be strategically weaker as a result.

The EU’s High Representative for Foreign Affairs and Security Policy Kaja Kallas recently warned that we must “act united” or risk being affected by Beijing’s actions — and she’s right. With a laser focus on interoperability and cost sharing, we could build systems that operate together in a shared market of close to 800 million people.

The real challenge isn’t technological, it’s organizational.

Whether it be Bretton Woods, NATO or the Marshall Plan, the West has strategically built together before, anchoring economic resilience with national defense. The difference today is that the lines between economic security, energy access and defense capability are fully blurred. Sustainable, agile energy is now part of deterrence, and long-term security depends on whether the U.S. and Europe can build energy systems that reinforce and secure one another.

This is a generational opportunity for transatlantic alignment; a mutually reinforcing way to safeguard economic interests in the face of systemic competition. And to lead in this new era, we must design for it — together and intentionally. Or we risk forfeiting the very advantages our alliance was built to protect.