Grid-Level Energy Storage
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Israeli company BaroMar is preparing to test a clever new angle on grid-level energy storage, which it says will be the cheapest way to stabilize renewable grids over longer time scales. This innovative system lets water do the work.
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This remarkable project promises to open up zero-carbon energy storage to a broad range of areas without huge hills, delivering 2.5 times the power of water-based hydro. A pilot plant has been greenlit, with full-size, grid-scale projects to follow.
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A new industrial-scale “sand battery” has been announced for Finland, packing 1 MW of power and a capacity of up to 100 MWh of thermal energy for use during those cold polar winters. The new battery will be 10 times bigger than a prior pilot plant.
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Fourth Power says its ultra-high temperature "sun in a box" energy storage tech is more than 10X cheaper than lithium-ion batteries, and vastly more powerful and efficient than any other thermal battery. It's hoping to prove it with a 1-MWh prototype.
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Sage Geosystems has pioneered a new form of cheap energy storage that uses the Earth as a giant bellows, pumping water into underground fractures, then letting it squirt back up at 70% efficiency – or 200% efficiency if you also harvest heat energy.
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Renewable energy grids need lots of energy storage – and EVs plugged into charging stations represent a huge, city-wide battery just waiting to help out. The Dutch city of Utrecht is about to pioneer a clever way to kickstart two-way charging.
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Bill Gates-backed startup Antora Energy is preparing to roll out a containerized, modular heat battery, designed to store renewable energy at the lowest possible cost – then release it efficiently as electricity or industrial process heat.
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UK company RheEnergise is quietly rolling out an interesting new approach to pumped hydro energy storage, aiming for a capacity of at least 100 MW by 2030. It works with small hills instead of mountains, making it relevant in many more areas.
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PNNL researchers have discovered that dissolving a simple sugar into the electrolyte in a flow battery boosts peak power output by a remarkable 60%. What's more, after being constantly cycled for a year, the battery lost almost none of its capacity.
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Gates- and Bezos-backed startup Form Energy is one of the most exciting companies in the grid-level renewable energy storage space, with a multi-day iron-air battery system just 10% the cost of lithium. A 10-MW/1-GWh demo system has now been approved.
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The state that built the world's first grid-level "big battery" is striking out on an even more ambitious green energy project: the world's biggest hydrogen power station, fed by an electrolysis facility 10 times larger than anything running today.
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One of the most exciting companies in grid-level renewable energy storage is Form Energy, whose innovative iron-air technology promises to outperform lithium "big battery" projects at 10% of the cost. It's preparing to scale up with its first factory.
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