A few years ago, we saw what the future of data storage might look like and the research being done to get us there. This month, in light of some recent scientific breakthroughs, let’s look at the future of energy storage and see what’s being done to find the batteries of tomorrow.
Solid-State Batteries
Solid-state batteries have long been touted as the eventual successor to your everyday lithium-ion batteries, and recent breakthroughs in research could mean that that eventuality is closer than ever.
Like their data storage counterparts that replace finicky moving parts with solid electromagnetic materials, solid-state batteries aim to replace the liquid components of lithium-ion batteries with solid electrolyte materials that are just as efficient. The benefits of solid-state batteries are threefold:
Solid electrolytes aren’t flammable, making them much safer to use and store.
They can hold more energy in the same amount of space.
They charge much faster and have much longer lifespans.
Imagine being able to fully charge your cell phone in under 10 minutes and having that charge last for days. Or driving your EV car on a single charge for thousands of miles. That’s the kind of upgrade in technology we’re talking about here. Researchers are currently striving to maximize practicality and efficiency, but live examples of the technology are already in the wild and will continue to show up in the near future.
A Sand Battery
Unlike traditional energy sources such as oil and coal, renewables like solar and wind power do not add to the carbon footprint, making them vital for achieving net-zero emissions by 2050. However, the availability of solar and wind power fluctuates throughout the year, and so their supply can’t always meet demands reliably.
Thermal storage is one way of combatting this problem. Instead of storing electricity directly, thermal storage systems convert excess power from the grid into heat and then maintain that heat for extended periods in materials such as molten salts, ceramic blocks, or even sand.
Specifically, Finnish company Polar Night Energy has developed a “sand battery” that can store excess energy as heat for months at a time and release it when needed for district heating. It’s not a technology that will ever fit in a car or a laptop, but it offers a practical way to stabilize energy supply for buildings and industrial processes while utilizing a resource as abundant as sand.
Quantum Batteries
Quantum batteries are still experimental. They’re unlikely to power homes or vehicles anytime soon, but the idea is that they store energy not through chemical reactions like lithium-ion batteries but through the quantum states of atoms or molecules. Energy is injected into and extracted from a system using the following quantum mechanical effects:
Superposition allows particles to exist in multiple energy states at once, increasing storage flexibility.
Entanglement links particles so they charge cooperatively rather than individually.
The collective effect means that larger quantum batteries can charge faster, the very opposite of standard batteries.
Which all means what, exactly?
Essentially, quantum batteries can be charged using light as an energy source. When particles of light (called photons) interact with a quantum system, they raise the energy state of the particles, which effectively means they’re in a charged state. And because they’re entangled, the entire ensemble of particles actually absorbs energy in a single collective event which dramatically speeds up charging.
To then get energy back out, the system allows the excited quantum states to relax. In prototype devices, this energy can be extracted as light or electrical work, depending on the architecture. The first prototype capable of a full charge–store–discharge cycle was demonstrated in March of 2026 by Australian researchers at the CSIRO, their national science agency. Though only functional for a matter of nanoseconds, this proof of concept is a huge milestone towards the development of a practical application of quantum technology. Scaling up storage time is now the next major challenge.
Quantum batteries of the future could theoretically provide the following benefits:
Ultra-fast charging due to collective quantum effects
High efficiency because no chemical degradation occurs
Scalability advantages—bigger batteries charge faster
Potential integration with quantum computers and nanoscale devices
Summary
The future of energy storage is being shaped by researchers who are no longer looking for a single “perfect battery,” but instead exploring a range of technologies that solve different parts of the same problem. As the grid incorporates more renewable power and as devices—from cars to homes to factories—demand steadier and cleaner energy, storage has become the hinge on which the entire system turns. What’s emerging is a landscape where chemistry, physics, and materials science each offer their own path forward.
Steve Shannon has spent his entire professional career working in tech. He is the IT Director and Lead Developer at PromoCorner, where he joined in 2018. He is, at various times, a programmer, a game designer, a digital artist, and a musician. His monthly blog "Bits & Bytes" explores the ever-evolving realm of technology as it applies to both the promotional products industry and the world at large. You can contact him with questions at steve@getmooresolutions.com.