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Power

Giant Tesla Battery Project Now Proposed For Silicon Valley (digitaltrends.com) 88

Digital Trends reports: Tesla's largest-ever Powerpack installation may be coming to Northern California. Pacific Gas and Electric Company (PG&E) applied to the California Public Utilities Commission for approval for a utility-owned 182.5 MW energy storage farm using Tesla Powerpacks at the company's energy storage site in Moss Landing... The Tesla project, however, would have an expansion capacity of 1.1 GW. The storage projects' purpose is to help keep electrical power levels even for PG&E customers. The storage facilities would feed power to the grid when consumption exceeds normal levels and during blackouts or other service interruptions.
Tesla's giant battery in Australia has already reduced grid service costs by 90%.

And speaking of power sources, long-time Slasdot reader judgecorp writes: A disused Stanley Black & Decker factory in New Britain, Hartford County.CT, will get a 20MW micro-grid powered by fuel cells, according to the first phase of a plan unveiled by the State Governor. It's a big deal because it will be the largest indoor micro-grid in the world, and will help provide a reliable power source for a data center in the old factory. Along with the other phases of the project, Governor Dannel Malloy hopes the deal will provide 3,000 jobs and lots of tax revenue.
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Giant Tesla Battery Project Now Proposed For Silicon Valley

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  • I'm confused, are these the Panasonic batteries Tesla uses, or are these produced by and is the IP owned by, Tesla? I'm trying to figure out which company owns what...

    • by Rei ( 128717 ) on Saturday July 07, 2018 @03:54PM (#56907566) Homepage

      The Powerpacks use Tesla's new 2170-format cells produced at the Gigafactory, which is a Tesla-Panasonic joint venture.

      • Do you know who owns the patents (Tesla, Panasonic, Gigafactory)?

        • by Rei ( 128717 )

          No - this has never been asked on any of the conference calls. One presumes that all Gigafactory IP is jointly owned, since GF1 is jointly owned.

        • no patents.
          The 2170 is supposedly based on Tesla's R&D and it is trade secrets, not patented. Panasonic contributed the equipment, that is all.
          • by tlhIngan ( 30335 )

            The 2170 is supposedly based on Tesla's R&D and it is trade secrets

            Well, the 21700 is not really a new battery. It's a new battery size, yes, just like you have the 18650 battery, Tesla "invented" the 21700 battery. If you can't read the number, the first two digits it eh diameter of the cell in millimeters, so Tesla bumped up the cell diameter to 21mm from 18mm. The last 3 digits are the cell length in tents of a millimeter (or hundreds of a micrometer, to be precise). So the cell length went from 65mm

    • I believe the battery chemistry IP is at least shared between Tesla and Panasonic.
      Tesla is funding some research in stuff like battery longevity, reducing reliance on scarce resources, etc.

      The production of the cells is done by Panasonic with Tesla as the client, but with Panasonic investing in the infrastructure.

      Everything above the cell level, integration of the cells into larger modules, cooling, software, electronics, etc is done by Tesla.

      • by Rei ( 128717 )

        This isn't exactly correct. Your description of the arrangement is accurate for the 18650 cells, but not the 2170s.

        • Please elaborate

          • by Rei ( 128717 )

            You described the arrangement of Tesla's purchase of 18650-format cells for the Model S and X. The model 3 uses 2170 format cells manufactured in GF1. Ownership and management of the plant is jointly held.

  • by Anonymous Coward

    Silicon Valley is a narrow stretch of the Santa Clara Valley, from Palo Alto to San Jose, where semiconductor companies were located during the 1980s. Moss Landing is a coastal area in Monterey County, which isn't even in the SF Bay Area.

  • Units! (Score:5, Interesting)

    by Roger W Moore ( 538166 ) on Saturday July 07, 2018 @04:55PM (#56907716) Journal
    When it comes to energy storage the usual number to quote is how much energy it stores. The rate you can drain energy from it, while not irrelevant, doesn't tell you much because it provides no idea of how long it can provide that power for: a few seconds to cope with surges, an hour or two while they start up a power station or 12+ hours to smooth out e.g. solar power.

    Since the article appears to confuse MW with MWh at one point I suspect that this is yet another example of journalists not understanding the difference between power and energy.
  • Not Silicon Valley (Score:4, Informative)

    by Local ID10T ( 790134 ) <ID10T.L.USER@gmail.com> on Saturday July 07, 2018 @05:05PM (#56907754) Homepage

    Moss Landing is on the coast, between Monterey and Santa Cruz. It is not silicon valley.

  • The Australia battery plant does not reduce grid costs 90%. It reduces the cost of frequency correction, which is a tiny percentage of the total grid cost. We should also be aware that this is only a power storage system, it does not produce any electricity on its own. The point here is that if there is an excess of solar, wind, hydroelectric, or fossil-fuel generated power at one point, this can be stored and released at another point in time. This release happens almost instantly, where with a more conven

    • by Anonymous Coward

      Except the battery is right next to a huge wind farm, placed there specifically to use excess output, so the combination does generate power.

    • Slow to respond coal can still just pay people to use its power.

      Though gas power plants were taken offline, nuclear and coal plants can’t be quickly shut down, so they went on running and had to pay to sell power into the grid for several hours, while industrial customers such as refineries and foundries earned money by consuming electricity.

      Or just shut them down and clean up the environment.

    • it does not produce any electricity on its own.

      But maybe you can take it to a Supercharger and charge it for free?

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