Chinese Battery Maker Unveils 30-Year Sodium Storage System

Imagine a battery that lasts three decades and costs pennies to run. That's exactly what Chinese battery maker Hithium just unveiled with its new sodium-ion energy storage system.

The company announced its ∞Power N4.0MWh system, which stores enough electricity to power hundreds of homes using batteries made from sodium, the same element found in table salt. Unlike lithium batteries that rely on rare, expensive materials, sodium is one of the most abundant elements on Earth.

The real game changer is the lifespan. Hithium's new system is designed to last 30 years, or 10,950 days of continuous operation. That's roughly three times longer than typical lithium batteries used today.

The company achieved this breakthrough in less than two years. In December 2024, they launched their first sodium-ion battery for large-scale storage. Now they've quintupled the capacity with their new 785Ah cell that can charge and discharge 20,000 times without wearing out.

Hithium plans to start full production in 2027 using their existing manufacturing lines. The system will initially power utility grids, then expand to businesses and eventually homes. The company is targeting an operating cost of just 1.5 cents per kilowatt-hour, making it one of the cheapest energy storage options available.

The new design takes up 30% less space than previous models thanks to stacked cells. A smart cooling system uses weather data to decide whether to use air or liquid cooling, cutting energy waste by up to 50% during standby mode.

The Ripple Effect

This technology arrives at a critical moment for renewable energy. Solar panels and wind turbines only generate power when the sun shines or wind blows. Affordable, long-lasting batteries solve that puzzle by storing excess energy for cloudy days and calm nights.

By using abundant sodium instead of scarce lithium, Hithium's approach could democratize energy storage worldwide. Countries without access to lithium deposits can now build their own battery supply chains using locally available materials.

The 30-year lifespan means less waste, fewer replacements, and lower lifetime costs. For a homeowner or business owner, installing one of these systems could mean three decades of reliable backup power from a single purchase.

When affordable energy storage becomes reality, clean energy becomes practical for everyone.