Blog Archives

Battery Prices Falling Through the Floor

If you’re wondering what will push battery prices down to previously unforeseeable levels, look no further. Up until recently, sushi has had far better storage technology than electricity, but that’s clearly no longer the case.  As described in the article






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Thermal Energy Storage

Yes, we’re continuing to make great progress in all aspects of energy storage via batteries,  most importantly, in terms of cost-effectiveness.  Yet it’s hard to conceive of a time at which batteries can compete with the storage of heat energy. 






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Energy Storage: The Latest in Supercapacitors

When modern-age electric vehicles first became “a thing” about 10 years ago, supercapacitors were a frequent topic of discussion, due to their value in delivering large amounts of power—far more energy per unit than batteries could provide.  As it turns






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Energy Storage Is Changing the Entire Energy/Transportation Landscape

Here’s a story about two very progressive companies dealing with 21st Century energy: Tesla and Sierra Nevada (a top-notch beer brewery).  The essence is that Tesla has installed a fairly large battery storage system, apparently to lower energy costs for






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Making Batteries from Carbon Dioxide: An Idea That Will Almost Certainly Never Come To Fruition

Here’s another example of a phenomenon so plentiful in cleantech: it’s doable, but there are no economic reasons that it will ever be done.  It’s a battery system that is built by taking carbon dioxide, perhaps from a point source






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Cool New Idea in Wind Turbines

Here’s a new idea in the quest to reduce or remove the variability of wind energy: an integrated water reservoir, making use of the huge watertight tower.  This creates a (small) pumped hydro energy storage solution without the elevation change. 






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Breakthrough in Energy Storage from the University of Wisconsin

Here’s an exciting development that lies squarely on the intersection of the main problems we face in making the migration from fossil fuels to renewable energy.  Combining solar energy with storage, it’s a device that converts incoming solar energy directly






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The Energy Storage Problem

2GreenEnergy megasupporter Cameron Atwood just sent me this from G.K. Surya Prakash (pictured), a chemistry professor at the University of Southern California: “Earth doesn’t have an energy problem. We have an energy storage problem.” There is no doubt that the advent






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This Report on Flow Batteries Will Make You Smile

A reader from the Unitarian Universalist Church of Palo Alto, CA, a group that’s heavily committed to sustainability, writes: For an emotional uplift check out the flow battery progress sponsored by ARPA-E (Advanced Research Projects Administration-Energy).






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How Abundant Is Lithium?

A reader asks, “Has it been determined whether the world’s supply of lithium is sufficient to produce enough battery capacity to make renewables reliable?” It’s a complicated question, unfortunately. Perhaps it’s best summed up by what the CEO of a






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