A cheap solution for a growing need
Polar Night Energy
Theres more to green energy than just generation.
Finding efficient and environment-friendly mechanisms to store all that clean energy is just as important.
Sand has a very high melting temperature thats hundreds of degrees Fahrenheit.
Polar Night Energy
The battery takes the form of a silo thats filled with about 100 tons of sand.
Currently, the battery powers the central heating system for the district.
The Finnish sand battery has 100 kW heating power, and a total storage capacity of 8 MWh.
ZedamNabil Photography / Getty Images
… the economics hinge on system capital costs where thermal energy storage technologies show promise.
The company used this pilot to test, validate, and optimize the sand battery solution.
Round-trip efficiency specifies the percentage of electricity put into storage and later retrieved.
The higher the round-trip efficiency, the less energy is lost in the storage process.
“Instead, the economics hinge on system capital costs where thermal energy storage technologies show promise.”
