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Two studies exploring battery costs for hybrids and plug-ins: LEESS, PHEV20, and PHEV40

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At the Department of Energy’s 2011 Hydrogen and Fuel Cells and Vehicle Technologies Programs combined annual merit review being held this week in Washington, DC, researchers presented results of two ongoing studies exploring the costs of three classes of battery packs: LEESS (Lower-Energy Energy Storage Systems—i.e.,

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Harvard team demonstrates new metal-free organic–inorganic aqueous flow battery; potential breakthrough for low-cost grid-scale storage

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The technology could fundamentally transform the way electricity is stored on the grid, making power from renewable energy sources such as wind and sun far more economical and reliable. Solid-electrode batteries maintain discharge at peak power for far too short a time to fully regulate wind or solar power output.

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Study Finds Bioelectricity Better Option Than Liquid Biofuels for Transportation Output and GHG Emissions

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The authors point out their study looked at only two criteria, kilometers travelled and greenhouse gas offsets, but did not examine the performance of electricity and ethanol for other policy-relevant criteria such as water consumption, air pollution or economic costs.

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Siemens presents three-point plan for implementing cost-efficient energy transition in Germany

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Relying on a higher share of efficient, low-emission combined cycle power plants and wind energy could save €150 billion (US$200 billion) by 2030 while attaining the same CO 2 targets, Siemens says. However, the financial cost of the shift is causing concern. Source: Siemens. Click to enlarge. One possibility here is auctions.

Germany 239
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PNNL study outlines requirements for grid storage, reviews four electrochemical energy storage systems: vanadium redox flow, Na-beta, Li-ion and lead-carbon

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Classification of potential electrical storage for stationary applications. In their study, Yang et al. To be successful, systems will need to evolve—in some cases, considerably—to compete financially with the cost of natural gas production. Credit: ACS, Yang et al. Click to enlarge. —Yang et al.

Li-ion 231