Energy Storage

Exploring everything within energy storage like lithium ion battery technology, pumped hydro, hydrogen and more.

How This Heat Pump Water Heater is Also a Battery

How This Heat Pump Water Heater is Also a Battery. Go to https://ground.news/undecided for an innovative way to stay fully informed on tech, energy, the climate and more. Save 40% on the Ground News unlimited access Vantage plan with my link. Heat pump water heaters have been around for over a decad

How 40-Ton Spinning Wheels Are Saving the Power Grid

When Spain's power grid failed on April 28th, 2025, it quickly became a very serious issue. Not only for the economic impacts, but life-or-death serious due to multiple, indirect deaths associated to the blackout. Emergency services, transportation, communication and other vital services were halted during this power outage.

Are Sodium Batteries Already Dead?

NOTE: An earlier version of this story incorrectly associated the failure of Northvolt to their sodium ion battery production issues, but their challenges weren't chemistry specific.  That section has been removed. I’ve got sodium batteries right here in my hands, but three sodium battery companies went bankrupt

Solid-State Batteries: Hype vs. Reality

If you've been following battery tech for the past decade, you've heard the solid state battery story before. Toyota promised them by 2025. Samsung said they were just around the corner. QuantumScape's stock soared on promises of revolutionary batteries. And yet here we are,