Welcome to Silk Logic’s Sustainability Daily Podcast – your go-to brief on the world’s most inspiring green innovations in business and technology. I’m your host, ready to kick off a fresh wave of optimism for entrepreneurs and professionals working to build a cleaner, greener future. Today’s top story: a “sand battery” from Finland is reimagining energy storage, putting us one step closer to truly sustainable power. And that’s just the beginning – stay tuned for more actionable insights on driving sustainability in your business.

Let’s dive right in.

First up, it’s rare you hear the words “sand” and “battery” in the same sentence – but Finnish company Polar Night Energy just put both firmly on the world stage. Their pioneering sand battery technology, named one of Time Magazine’s Best Inventions of 2025, addresses a critical sustainability challenge: storing abundant renewable energy from solar and wind when the sun isn’t shining and the wind isn’t blowing.

Here’s the problem: As m