The MIT team estimates their thermal “battery” designed for long duration – 100 hours or more – would be half the cost of today’s cheapest grid-scale energy storage; pumped hydro. A very intriguing idea for long-duration gigawatt-scale grid thermal energy storage proposes to store renewable electricity from the grid by charging a “battery” of molten … Continue reading MIT Proposes PV to Discharge Energy from 2,400°C Silicon Thermal Storage