It's essentially your home's personal energy storage solution, commonly known as a home battery system. Picture it as a savings account for your electricity. It collects surplus energy, typically from solar panels, and stashes it away in batteries for future use.
[pdf] ESS Inc. (NYSE: GWH) is the leading manufacturer of long-duration energy storage solutions using iron flow technology. ESS was established in 2011 with a mission to accelerate decarbonization safely and sustainably through longer lasting energy storage.
[pdf] $280 - $580 per kWh (installed cost), though of course this will vary from region to region depending on economic levels. For large containerized systems (e.g., 100 kWh or more), the cost can drop to $180 - $300 per kWh.
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