'Closing in on the theoretical maximum efficiency, devices for turning heat into electricity are edging closer to being practical for use on the grid, according to University of Michigan research.
Heat batteries could store intermittent renewable energy during peak production hours, relying on a thermal version of solar cells to convert it into electricity later.'
#Grains of sand... are surprisingly roomy when it comes to energy storage —
"Capable of storing 100 MWh of #ThermalEnergy from #solar and #wind sources, it will enable residents to eliminate oil from their district heating network, helping to cut emissions by nearly 70[%]."