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29 Aug 09

Big Blue dreams of a big green battery

  • IBM is focusing on Lithium-Air batteries, which the company said has the potential to pack up to 10 times the power stored in Lithium-Ion batteries commonly found in cell phones and laptops.
07 Dec 08

CR4 - Thread: How big a capacitor to run a bus?

  • Any capacitor large enough to run the bus, would presently be many times the size of the actual bus, thus the capacitors would need to be in a string of trailers behind the bus to power it and leave room for the passengers.



    If such a capacitor-powered bus was ever designed, then consider how damaging the energy stored in the capacitor/s, if a sudden short circuit developed - it would demolish several city blocks in the resultant explosion.



    By comparison, energy stored in chemical form is far safer, small volume for large energy storage, easy to control.

12 Oct 08

GreenBizCafe » Blog Archive » How Much Electricity Does a Car Need?

  • (The Volt will be a ful-sized four-passenger car with a range of about 65 kilometres using only its batteries. It is scheduled to go into production in the United States in 2010.)
  • The Volt will use a battery with a capacity of 16 kilowatt-hours of charge. But that battery won’t dip below eight kWh of charge, so a full nightly charge would be eight kWh - about the same amount of power as is consumed by a water heater, a plasma TV or a computer and monitor left on all day.
24 Aug 08

untitled

The most efficient form of renewable energy may be right underneath us. Researchers at Worchester Polytechnic Institute (WPI) in Massachusetts announced today that they have discovered a method to use road surfaces for solar collection.

cleantechnica.com/...ke-roads-a-solar-energy-source - Preview

solar roads thermal storage

  • The most efficient form of renewable energy may be right underneath us. Researchers at Worchester Polytechnic Institute (WPI) in Massachusetts announced today that they have discovered a method to use road surfaces for solar collection.
18 Jul 08

IBM to prime pump for smart-grid start-ups | Green Tech - CNET News.com

  • The idea is to create a common set of communication protocols and data formats that utilities and smart-grid start-ups can adhere to.
  • The benefit of a more intelligent infrastructure is that load can be curtailed as needed and problems spotted more quickly. By flattening out spikes in demand, utilities may not need to build new power plants, which are expensive and opposed in some places for environmental and health reasons.
16 Jun 08

IEEE Spectrum: Lithium Batteries On The Way For Hybrids

  • In just one year, the whens and wheres of lithium battery packs for hybrid and electric cars have come into much sharper focus
10 Jun 08

California ISO: Integration of Renewable Resources Program (IRRP)

  • In support of the State of California Renewables Portfolio Standard, the California ISO (CAISO) has worked with Participating Transmission Owners, the California Energy Commission, the California Public Utilities Commission, industry experts, adjacent control areas and owners/developers of renewable resources to identify integration issues and solutions for the integration of large amounts of renewable resources into the CAISO Control Area.

Electronic Component Suppliers - Electricity Storage Association - electric utility, esco

  • While capital cost is an important economic parameter, it should be realized that the total ownership cost (including the impact of equipment life and O&M costs) is a much more meaningful index for a complete economic analysis. For example, while the capital cost of lead-acid batteries is relatively low, they may not necessarily be the least expensive option for energy management (load leveling) due to their relatively short life for this type of application.

Storage Boosts the Power of Renewable Energy

  • "Grid-scale storage is here now. Storage should be deployed now at the gigawatt (GW) scale...where capacity, ancillary services and energy time-shifting are clearly needed."
08 Jun 08

Flat Panel Technology Boosts Solar Efficiency

  • Xtreme Energetics has investigated the possibility of using mechanical trackers to perform the same light-focusing duties as other solar array manufacturers have. However, HP’s transparent transistor can do the job electronically, rather than mechanically, and significantly reduce the costs of such an installation. Such a solar array is known as a concentrating photovoltaic (or CPV) solar array. To date, CPV arrays are fairly expensive and cannot store energy, making them less useful. They also work best in specific sections of the world — those with the highest levels of solar radiation, such as the southwest United States and northern Africa.
23 Apr 08

Technology Review: Lithium-Ion Electric Car

  • Light and compact lithium-ion batteries sound great for electric vehicles--aside from their historical tendency to catch fire. But recent advances in electrode chemistry have made them much safer. One of the first vehicles to use the new batteries comes from a Norwegian company, Think. By year's end, Think plans to start selling ultracompact electric cars with a range of more than 100 miles. A123 Systems of Watertown, MA, and Indianapolis's EnerDel will provide the batteries.

Peak Energy: We're Off To See The Wizard - Storing Energy Using Ammonia

03 Mar 08

The Energy Blog: Sodium Sulfur Batteries to be Used for Energy Storage at MN Windfarm

  • Xcel Energy, (NYSE: XEL)in partnership with the University of Minnesota, the National Renewable Energy Laboratory and the Great Plains Institute, will soon begin testing a one-megawatt sodium-sulfur battery storage system to demonstrate its ability to store wind energy and dispatch it to the electricity grid when needed.
10 Feb 08

Peak Energy: Storing Energy Using Graphite

  • The company developing the technology is called Lloyd Energy Systems, which is prototyping solar energy storage, a wind-to-heat plant and a small-scale plant that combines water treatment, energy storage and steam turbine generation.

    The company has received a $5 million Federal Government grant as part of its advanced energy storage technology program in the western NSW town of Lake Cargelligo, with Country Energy agreeing to purchase the power generated. Lloyd Energy also has an agreement with Ergon Energy in Queensland to build a $30million plant at Cloncurry in Queensland, partially funded by the Queensland state government, which the Sydney Morning Herald reported on last year.
30 Jan 08

Water Powered Phones - Samsung's H2O Fuel Cell Ready for 2010?

  • Water-powered is a bit misleading. But possibly more promising than direct methanol fuel cells for consumer products? - keulenae on 2008-01-30
  • Samsung revealed a water powered phone at the 2007 Korea Electronics Show. 
13 Jan 08

GM-VOLT : Chevy Volt Concept Site » Lockheed Martin Signs Agreement with EEStor

  • We have previously discussed a secretive Texas company called EEStor, who are reported to be working on a new type of ultracapacitor that can hold 10x the energy in 1/10th the weight of typical batteries, at a fraction of the cost.


    They have an agreement to produce caps for Zenn electric cars but to date have not shown any prototypes. This has led some to suspect EEStor as not having the technology they report.


    Today, however, Lockheed Martin, the major U.S. military equipment manufacturer has announced a partnership agreement with EEStor to develop energy applications.

20 Dec 07

ScienceDirect - Renewable and Sustainable Energy Reviews : Review on thermal energy storage with phase change materials and applications

  • The use of a latent heat storage system using phase change materials (PCMs) is an effective way of storing thermal energy and has the advantages of high-energy storage density and the isothermal nature of the storage process. PCMs have been widely used in latent heat thermal-storage systems for heat pumps, solar engineering, and spacecraft thermal control applications. The uses of PCMs for heating and cooling applications for buildings have been investigated within the past decade. There are large numbers of PCMs that melt and solidify at a wide range of temperatures, making them attractive in a number of applications. This paper also summarizes the investigation and analysis of the available thermal energy storage systems incorporating PCMs for use in different applications.
21 Nov 07

New Geothermal Energy Project in Halifax to Use Cold Energy Storage

  • The project includes the first large-scale application of geothermal cold energy storage.
17 Oct 07

IEEE Spectrum: Can plug-in hybrid electric vehicles keep the electric grid stable?

  • After safety, the longevity of the batteries in a
    plug-in hybrid is the greatest unknown. Can a plug-in
    hybrid’s battery pack retain the bulk of its energy
    capacity over 10 years of daily use and more than 4000
    full-discharge cycles? (For a deeper look at the
    challenges facing plug-in hybrid batteries, see “Lithium
    Batteries Take to the Road”.)[ LINK:
    http://www.spectrum.ieee.org/sep07/5490 ] As Don
    Hillebrand of Argonne National Laboratory, in Illinois,
    said tartly, “Batteries are the showstopper.”


    Periodic demands from the grid, even for only a small
    fraction of the battery’s stored energy, would clearly
    affect the cells’ life span—but no one has data on how
    much. Another open issue is the development of creative
    financing models for replacement battery packs costing
    several thousand U.S. dollars even after mass production
    is achieved.


    Third-party battery leasing could be one answer, if
    combined with a secondary market for batteries whose
    performance has fallen below automotive levels.
    Carmakers, electric utilities, and large
    consumer-financing groups are quietly batting around
    these notions to see if they can build a financial model
    that makes sense for all three parties.

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