Imagine walking into your kitchen, grabbing a bag of salt-and-vinegar potato chips, and realizing that the secret behind their tangy flavor holds the potential to transform energy storage. It sounds like science fiction, but in reality, Sunamp—a Scottish company pioneering in energy storage—has tapped into a chemical compound found in these chips to fuel a revolution in thermal battery technology.

The key ingredient? sodium acetate. Commonly used as a seasoning in salt-and-vinegar chips, this innocuous compound is much more than a flavor enhancer; it’s a phase-change material (PCM) with remarkable thermal properties. When sodium acetate is heated, it melts and stores energy. As it cools and solidifies, this energy is released in a controlled manner, which is the principle behind Sunamp’s thermal batteries.

Rethinking Energy Storage

Thermal energy storage, while not as well-known as lithium-ion batteries or hydrogen fuel cells, could be a game changer in our quest for sustainable energy solutions. Unlike electrical storage, thermal batteries focus on storing heat or cold energy, which can be utilized for temperature regulation in buildings, industries, and even transportation.

Sunamp’s innovative use of sodium acetate in its thermal batteries is based on a deceptively simple principle: store heat when it’s abundant and release it when it’s needed. The company’s batteries, which look like compact, insulated boxes, can capture excess heat generated from renewable sources like solar panels or wind turbines. This heat can then be released on demand to provide warmth, power hot water systems, or even cool spaces, by reversing the heating process.

A Solution to the Energy Crisis?

The world’s growing demand for energy is undeniable, and much of it comes with an enormous environmental cost. Renewable energy sources are essential to reducing our carbon footprint, but they face a significant challenge: their intermittent nature. The sun doesn’t always shine, and the wind doesn’t always blow. That’s where energy storage becomes vital.

By using sodium acetate—a compound so common it’s found in our snack food—Sunamp has created a scalable, cost-effective solution to this energy dilemma. sodium acetate’s ability to store and release heat efficiently makes it a low-cost and environmentally friendly alternative to more conventional batteries. It doesn’t require mining rare earth metals, and its production is far less toxic than lithium-ion batteries.

Empowering a Greener Future

What makes Sunamp’s innovation truly exciting is its potential impact on households and industries. Imagine homes where heating and cooling systems are powered by thermal batteries, capturing excess energy during the day and releasing it as temperatures drop in the evening. Or industries where heat-intensive processes are driven by renewable energy stored in simple, sodium acetate-powered batteries.

The implications are profound. Not only does this reduce dependence on fossil fuels, but it also allows us to better utilize the clean energy we’re already generating. As Sunamp continues to refine and scale up its technology, thermal batteries could become a critical part of our global energy infrastructure.

A New Age of Energy Storage

Sunamp’s use of sodium acetate serves as a reminder that sometimes the most powerful solutions are found in the least expected places. The humble salt-and-vinegar chip, with its distinctive tang, harbors a secret that could help reshape how we store and use energy.

As we stand on the brink of a new era in energy storage, Sunamp’s thermal batteries offer a tantalizing glimpse of the future—a future where the most unexpected materials could play a role in solving the world’s most urgent challenges. It’s proof that innovation often begins with a fresh look at the familiar and that solutions to even the most complex problems might just be found in our everyday lives.