Category Archives: Energy Storage

Intermittent wind, solar, and wave power can not replace fossil fuels and nuclear power electricity generation without energy storage

Is large-scale energy storage dead?

 April 8, 2016 by Roger Andrews at euanmearns.com Many countries have committed to filling large percentages of their future electricity demand with intermittent renewable energy, and to do so they will need long-term energy storage in the terawatt-hours range. But … Continue reading

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Utility, large-scale battery energy storage

Hodson, H. July 25, 2015. Power to the people. NewScientist. Demand for electricity varies every second, minute, hour, day, and season.  Production is easy to provide from always-ready natural gas and coal. But as we move towards a 100% renewable … Continue reading

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Turlock AB 2514 California Energy Storage

Notes from 29 page: Turlock Irrigation district Energy Storage Study. 2014. Willie G. Manuel 9/17/2014 Recommendation. The analysis performed shows that the benefits of deploying various types of storage systems fall short of the capital cost of such systems. Furthermore, … Continue reading

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Vernon VG&E AB 2514 Energy storage report

STAFF REPORT: VERNON GAS & ELECTRIC DEPARTMENT   September 2, 2014 [some of the 25-page report is shown below as I attempted to get up to speed on energy storage. Since California is the first state to mandate this, and … Continue reading

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Wind, solar, and storage impact on the California grid

California Energy commission. June 2010. Research evaluation of wind generation, solar generation, and storage impact on the California Grid. 131 pages. Excerpts: This report analyzes the effect of increasing renewable energy generation on California’s electricity system and assesses and quantifies … Continue reading

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Sacramento SMUD AB 2514 Energy storage report

[The state of California has realized that it’s unlikely a larger or national transmission grid will be built to share and balance variable renewable power, and is going to Plan B, energy storage. The problem is, all of the utilities … Continue reading

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Hydropower has a very low energy density

To store the energy contained in 1 gallon of gasoline requires over 55,000 gallons to be pumped up 726 feet (CCST 2012). As a thought experiment look at what it would take generate all of America’s 4,058 TWh electricity, where … Continue reading

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CSP Barriers and Obstacles

Location must be in the desert Southwest Unlike solar PV, CSP can’t cope with humidity or cloud cover, so it is limited to the southwest were the solar irradiation is high and there is no dust, haze, or smog.  Solar … Continue reading

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CSP with thermal energy storage is seasonal, so it can not balance variable power or contribute much power for half the year

Concentrated Solar Power not only needs lots of sunshine, but no humidity, clouds, dust, smog or or anything else that can scatter the sun’s rays.  Above 35 degrees latitude north or south, the sun’s rays have to pass through too … Continue reading

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Solar Thermal ESOI (Energy Stored on Invested)

Barton, N. April 17, 2013. ESOI for solar thermal. http://sunoba.blogspot.com/2013/04/esoi-for-solar-thermal.html Published information is available to evaluate the ESOI score for the most common solar thermal storage technology – a molten 60-40 mixture of sodium and potassium nitrates, commonly known as … Continue reading

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