Imagine an organisation that operates vehicles of every size and type. It houses, feeds, and protects hundreds of thousands of people, 24 hours a day, 365 days a year, from urban headquarters to desert camps. It consumes nearly 28 million megawatt-hours of electricity per year and over 3 billion gallons of fuel.
That organisation isn’t imaginary, it’s the U.S. Department of Defense. As one of the world’s largest consumers of energy, it faces growing pressure to cut costs, reduce emissions, and strengthen operational resilience. The answer lies in electrification, which means replacing fuel-based systems with technologies powered by electricity. This includes hybrid and fully electric vehicles, advanced battery storage, and deployable microgrids that can generate, store, and distribute energy independently of traditional fuel supply chains.
The United Kingdom is pursuing the same goal. The Ministry of Defence currently produces around 1.8 million tonnes of operational greenhouse gas emissions each year but aims to reduce fuel consumption by a further 10% by 2026. Battlefield electrification, supported by advances in batteries, hybrid platforms, and microgrid technology, sits at the centre of that strategy.
It might be a battery energy storage system (BESS) keeping the lights on at a remote outpost, an electric heavy goods vehicle delivering critical supplies across rough terrain, or an exoskeleton suit powered to enhance human performance. In every case, reliable and portable energy, especially from advanced batteries, is becoming as vital as food, water, and communication.
Yet while examples of electrification are starting to appear across military operations, the transition will take time. According to the British Army’s Approach to Battlefield Electrification, large military platforms are unlikely to have full electric drive before the 2040s and will benefit much more from hybrid drive solutions in the meantime. Hybrid systems extend range, cut fuel use, and improve mobility without sacrificing reliability, marking a practical step between conventional and fully electric fleets.
Even so, momentum is building. The global military vehicle electrification market was valued at $7.5 billion USD in 2024, with forecasts suggesting it could reach $80.4 billion USD by 2035, as armed forces invest in technologies that balance immediate performance with long-term sustainability.
Historically, militaries were wary of battery technology pointing to limited range, long charging times, and the challenges of transporting heavy energy systems. Yet, the battery industry has evolved dramatically. Today’s batteries are lighter, faster-charging, and longer-lasting.
Both the U.S. and British Armies are testing new ways to bring these technologies into the field. In the UK, for example, trials are under way to fit existing military vehicles with hybrid-electric engines to see how they perform in real conditions. One of the main test vehicles is the Jackal, an all-terrain patrol vehicle designed for speed and agility across difficult landscapes. The goal is to understand how hybrid systems can extend range, improve handling, and enable quieter movement, which is especially valuable for missions that demand flexibility and endurance.
For any modern force, the ability to operate without fragile fuel supply lines is critical. Traditional backup systems rely on diesel generators, but these need constant maintenance, refuelling, and storage, each creating another point of failure.
Microgrids offer a more flexible, sustainable, and reliable alternative. They are compact power networks that can generate and store electricity on site, often using a mix of renewables, BESS, and small generators. If cut off from the main grid, they can run independently, keeping bases and equipment powered.
While the military may represent an extreme example, its challenges mirror those faced by industries everywhere from logistics and mining to transportation and grid management. Each is wrestling with the same fundamental question: how do we move, build, and connect in a world no longer powered by fossil fuels?
The answer, increasingly, lies in battery innovation; the quiet revolution reshaping how energy is produced, stored, and used across every sector.