A fascinating energy storage startup just emerged from stealth mode. The concept involves DC coupled PV feeding resistive heaters buried in dirt, providing hea

A fascinating energy storage startup just emerged from stealth mode. The concept involves DC coupled PV feeding resistive heaters buried in dirt, providing heat at 600 C for a capex of $.10/kWh-th of storage capacity. Storage is seasonal, from summer to winter. EDIT: dupe, darn it.