Long Duration Energy Storage is one of the few technologies that actually changes that equation.
Not by adding more generation, but by changing when and how we use it.
You store energy when it’s abundant. And release it when it’s needed. Hours later. Days later. Even seasons later.
That sounds simple.
You reduce the need for fossil backup.
You lower exposure to volatile fuel markets.
You build energy systems that are less dependent on geopolitics.
Recent filings show where things are heading. Take WO2023235289A1. A subterranean thermal storage system designed for seasonal storage at high energy density. Not a simple tweak, but a different way of thinking about energy systems.
Or take WO2023183851A1. A geothermal and geopressured “battery” that stores energy in fractured underground reservoirs during off-peak periods and releases it when demand rises.
The technology is there.
The business case is getting stronger.
The bottleneck in most cases remains scaling and financing.