Category: Energy Storage

Here’s a piece on “hot rock” energy storage, where tanks of tiny stones, the size of peas, are heated to as much as 600 degrees C when energy from intermittent sources like solar and wind exceeds demand. How this could …

Hot Rock Energy Storage Read More »

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2GreenEnergy super-supporter Gary Tulie writes: Hi Craig,  Re something like this, I have to ask what’s the point?  The hydrogen energy store is 3 times the price of a Tesla Power wall to store 3 times the energy, so about the same …

Tesla Powerwall Rival Seeks to Bring Hydrogen Into Your Home Read More »

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I met the people from Eos at an energy storage event in San Diego many moons ago, perhaps 2010.  One of their reps told me that they were right around the corner from a commercially available zinc-air battery that would …

The Mysterious Eos Zinc-Air Battery Read More »

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Here’s an article that discusses the UK’s massive plans to replace fossil fuels with renewable energy and storage.  All well and good, until the author heads in the direction of vehicle to grid (V2G), the two-way flow of electrical energy …

Cheaper Energy Storage? Read More »

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Energy storage has the ironic virtue of helping out so many consumers of electrical power that it makes it hard to figure out how to integrate it into the market. It helps: • generation, by replacing expensive peaker plants,

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Here’s another one of those clean energy concepts that falls under the category: “will ‘work,’ but would be so ridiculously expensive that it will never be built.”  It’s an idea in the energy storage space that’s a variant of “advanced …

Concept in Energy Storage Read More »

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The integration of large percentages of renewable energy is notoriously limited because of variability, though there are several tacks engineers take to mitigate this. One, of course, is gas peaker plants.  In some parts of the U.S., large solar and …

Energy Storage Is Changing the Game Read More »

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Six or eight years ago, a client paid me a small fee to provide my opinion of a concept called “advanced rail energy storage,” or “ARES.” It’s essentially pumped hydro without the hydro.  In other words, it replaces water with …

New, Completely Unworkable Concept in Energy Storage Read More »

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Reader ‎Markus Dirnbacher‎ asks, Sustainable hydrogen – amongst all currently available technologies- will be the only possibility for long term storage of power! Do you agree? No, this is extremely unlikely to happen. Batteries are making great progress, and synthetic …

Feasibility of Hydrogen Read More »

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2GreenEnergy supporter Gary Tulie writes from his home in England:  Hi Craig,  If these people succeed in their target of achieving long term energy storage at a cost of $10 per kWh using sulfur flow cell batteries, they could change the …

Sulfur Flow Batteries Read More »

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