> The system clearly doesn't exist, or we'd see pictures and video of it. > While this tech sounds nice for industrial processes, it's not anywhere near as pra

> The system clearly doesn't exist, or we'd see pictures and video of it. > While this tech sounds nice for industrial processes, it's not anywhere near as practical for domestic heating, where geothermal heat pumps will be more efficient. A family member had a heat storage system that used electricity to heat bricks about a decade ago. Worked great for home heating with time-of-day rates (especially with some solar to offset the peak rate daytime). And the purchase cost was very low, unlike any sort of ground source heat pump.