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Energy Vault to provide 1.6 GWh of gravity energy storage to support DG Fuels SAF projects

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The composite blocks can be made from low-cost and locally sourced materials, including the excavated soil at the construction site, but can also utilize waste materials such as mine tailings, coal combustion residuals (coal ash), and fiberglass from decommissioned wind turbine blades.

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EIA: US electricity generation from coal and natural gas both increased with summer heat

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In August 2012, coal produced 39% of US electricity, up from a low of 32% in April 2012, when the natural gas share of generation equaled that of coal. The August coal share of generation is still notably lower than the 50% annual average over the 1990-2010 period. Other plants use PRB coal transported by rail.

Coal 236
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Georgia Tech study suggests unlinking EVs from CAFE and coordinating with power sector for low-cost benefits

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The controlled charging of EVs can reduce electricity costs and improve the integration of wind energy. The benefit per average vehicle is small at low to moderate EV adoption levels because EVs are a small fraction of the fleet. The orange increment, in the 20% EV and 100% EV cases, is from linking fuel efficiency standards.

Low Cost 236
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BloombergNEF: solar, wind, batteries to attract $10T to 2050; curbing emissions long-term will require other technologies

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Deep declines in wind, solar and battery technology costs will result in a grid nearly half-powered by the two fast-growing renewable energy sources by 2050, according to the latest projections from BloombergNEF (BNEF). Each year, NEO compares the costs of competing energy technologies through a levelized cost of energy analysis.

Wind 207
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To Store or Not to Store: That is the Question

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However, when peak demand is not required the inefficiencies of idling coal, nuclear and gas powered power plants has become both very uneconomic and non-responsive to changes in demand for today’s market. Supplementing baseload coal-, nuclear- and gas-powered power pants in a grid strategy for tomorrow. Click to enlarge.

Store 279
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Berkeley study finds renewable portfolio standards insufficient to meet 2030 GHG emission targets; new policy required

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The least expensive way for the Western US to reduce greenhouse gas emissions enough to help prevent the worst consequences of global warming is to replace coal with renewable and other sources of energy that may include nuclear power, according to a new study by University of California, Berkeley, researchers. —Daniel Kammen.

Renewable 231
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GE Capital, NRG Energy and ConocoPhillips form $300M JV to fund emerging energy technology

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The joint venture’s initial investments are in: Alta Devices, Santa Clara, CA, improving the production economics of advanced materials for high-efficiency, low-cost solar energy. Centennial, CO, developing technology to biochemically convert coal to methane at large scale and low cost. Ciris Energy , Inc.,

Energy 225