I read in Fortune Magazine the NaS (Sodium Sulfur) Battery energy storage system of NGK Insulators of Japan. They have up to 15 years life and can come in containerized form for easy installation. They have installations of as low as 50 kW up to 300 kW in various locations.
This makes wind and solar energy more stable with the storage system. We all know that there is no energy from solar panels 2/3 of the day or during rainy or inclement weather. Or when there is no wind.
Thus an energy storage system would be a necessity. An ideal RE system would consist of a wind, solar farm, and storage system.
NGK would seem to have come with a viable ready solution
The only supplier of NaS battery is NGK. It bought the technology from Ford Motor Corporation jointly developed this with TEPPCO (the one that runs the nuclear power plant) The battery is made from readily available materials: aluminum, sodium from sea water as well as sulfur. The battery has 15 years life and good up to 2,500 cycles. It operates at temp of 300 degrees. The sodium is can tach fire when oxidized or when it contacts with water and thus safety is important in its use\usage
The only other viable system for power storage is the hydro as in Kalayaan Laguna. The output of hydro at night is used to pump up Laguna lake water which generates energy during daytime for industrial consumption. But such facilities are limited by geography.
NaS works for wind, solar, and concentrated solar power (where the suns rays are collected to generate steam to generate electricity. Electricity generated at daytime can be stored at the batteries, and the heat can be stored at salt towers too.
Cost would be about $0.08 per kwatt hour (P4.00) so that makes solar power using storage very expensive even if LCOE is P5.00
There was a fire incident in its plant in Tsukuba Japan and NGK has temporarily suspended its production. NGK has requested those who bought the batteries to refrain from using the batteries until such time that the cause of fire has been determined. From Greentech media
Xtreme power also experienced a small fire at its plant in Hawaii and farm.
From Energy Storage News
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