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Tesla Plans To Power Its Gigafactory With Renewables Alone 260

AmiMoJo writes In his press conference, Elon Musk stated that the factory will produce all of its own energy using a combination of solar, wind, and geothermal. Engineering.com looks at the feasibility of the plans. Spoiler alert: it looks possible, though some storage will be required. Fortunately, if there is one thing the Gigafactory won't be short of it's batteries. From the article: "The numbers don’t lie. The site could realistically produce more than 2900 MWh of renewable electricity each day ... 20% more than it needs. These are conservative estimates on production and worst-case estimates on consumption, and it’s clear that there’s enough renewable energy to run the plant with some to spare."
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Tesla Plans To Power Its Gigafactory With Renewables Alone

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  • by Mr D from 63 ( 3395377 ) on Monday September 08, 2014 @12:28PM (#47853403)
    I think it is wonderful that they will try this out, but don't want my tax dollar to finance 40% (or whatever) of their power costs. Embed the cost in the finances of the company and the product cost, please. Then I'll be cheering you on for success.
    • by Guspaz ( 556486 ) on Monday September 08, 2014 @01:04PM (#47853761)

      If you live in Nevada, then they're indirectly getting your tax dollars (in that they are getting cheaper rates and tax breaks, rather than actual money handed over). However, the economic impact of the gigafactory is apparently expected to outstrip the tax breaks by a ratio of 80:1, so it sounds like a good deal... if the economic benefits the governor of Nevada is claiming are realized.

      • What states do to incentive businesses to locate is up to them. I am talking about using federal tax money to pay the power bill.
        • by Anonymous Coward on Monday September 08, 2014 @01:33PM (#47854075)

          Tesla has paid back its department of energy loan a long time back and last I checked, didn't take out another.

    • Considering all their competitor's factories benefit from huge tax incentives you are trying to put Tesla at a big disadvantage! How are they supposed to compete?

    • by Lumpy ( 12016 )

      But you are OK with GM, Ford and Chrysler getting a monthly handout from not only the States but the Feds?

      If you dont like it then start writing to your congress critters to end all corperate welfare. The problem is in Washington.

      • Not OK with the handouts. And I am also not aware of those companies getting federal money specifically to pay their power bill. Which are you OK with?
        • by Lumpy ( 12016 )

          I am not OK with any corporation getting any federal money for any reason.

          But then I also am against paying farmers to not grow crops.

          • by geekoid ( 135745 )

            Do you know why we pay farmers not to grow crops?
            It costs less for the government to do that, then to pay to store grain they don't need.
            It's one of the reason food system in the US is so stable.
            The history of why we do that is pretty interesting.

            Stability is the reason for the fed loans to GM et. al.

    • by suutar ( 1860506 ) on Monday September 08, 2014 @01:50PM (#47854235)

      I'm not sure where you're getting the idea that they're getting taxpayer money to cover their power bill. The linked article doesn't discuss the tax breaks; do you have another source of information?

      • I didn't say the would get that tax money, I just said please don't take it. As we all know, there are generous tax incentives, often 33% to over 50%, to pay for certain renewable power installations and for forced purchase of power from those installation at much greater than wholesale rates. I don't mind a little help, and incentives for building the factory and creating the jobs, but don't put us on the hook to pay for their energy use, particularly from an overall highly expensive installation.
    • Tesla is now worth 20 billion dollars, and their battery partners (Panasonic) are also chipping in on building the factory. I doubt they need much help from the public.

      • by jfengel ( 409917 )

        They don't need it. They want it. Every dollar they save in taxes is a dollar that their shareholders (including Musk) get to pocket. And the state gives it to them willingly, in the hopes that it brings jobs to the area. Tesla really is a "jobs creator", unlike a lot of other self-proclaimed masters of the universe, and so the tax breaks really are win-win. It's not zero-sum because value is being added: raw materials come in and batteries go out.

        That's what business looks like when it's working, and state

  • by Maury Markowitz ( 452832 ) on Monday September 08, 2014 @12:34PM (#47853475) Homepage

    "all of its own energy using a combination of solar, wind, and geothermal"

    No, that's not what it says. It says it will be net-zero. That's a big difference.

    This plant will be grid-connected. It will simply produce as much energy as it uses. Not all the time, not 24 hours.

    • Obviously a battery factory will have some amount of batteries on site. The 2400 MWh/day figure from the article would be around 30 000 full Model S battery packs, so going completely off-grid using whatever batteries they have lying around is unfeasible. Anyway, no point in not using them, right?
    • The incentive package Nevada offered Tesla [usatoday.com] includes $8 million in discounted electricity rates. So it's definitely a net-zero thing, not off-grid. In fact I'm still trying to figure out if it's net-zero in electrical production, or net-zero in electricity cost (i.e. sell solar to the grid during the day when rates are high, buy it back at night when rates are lower).
  • by Black Parrot ( 19622 ) on Monday September 08, 2014 @12:36PM (#47853505)

    I figured they would power it with hype on Slashdot.

  • True North? (Score:5, Interesting)

    by Jodka ( 520060 ) on Monday September 08, 2014 @12:44PM (#47853579)

    from the linked article at engineering.com:

    "Musk said that the factory would be aligned with true north so equipment could be located with GPS ..."

    Can anyone here make sense of that statement? GPS only works when buildings are aligned with true north?

    • Re:True North? (Score:4, Informative)

      by Trepidity ( 597 ) <delirium-slashdot AT hackish DOT org> on Monday September 08, 2014 @12:53PM (#47853681)

      My guess, without having any particular knowledge, is that the factory will have some kind of internal grid system (fairly common), and aligning the factory with a compass direction means you can easily convert between internal coordinates and lat/lon GPS coordinates. Of course assuming you aren't converting by hand, it's not really hard to convert even if the factory were not axis-aligned.

      I could be way off, but I can't think of another way that statement could make sense.

      • My guess, without having any particular knowledge, is that the factory will have some kind of internal grid system (fairly common), and aligning the factory with a compass direction means you can easily convert between internal coordinates and lat/lon GPS coordinates. Of course assuming you aren't converting by hand, it's not really hard to convert even if the factory were not axis-aligned.

        Even if it has an internal grid system, I can't come up with a plausible why you'd want to convert from GPS to the inte

  • that's ironic, considering nevada has some of the cheapest electricity rates in the country, because of the hoover dam.

    • Re:ironic (Score:4, Insightful)

      by bobbied ( 2522392 ) on Monday September 08, 2014 @01:45PM (#47854205)

      Unless it starts raining and snowing upstream pretty soon, Hoover Dam isn't going to be a source of much electricity anymore.

      • The Hoover dam seems like an ideal candidate for pumped-storage hydro [wikipedia.org], turning it into the world's largest "battery" for renewable energy.
        • Pumped storage at Hoover dam? One problem is obvious, pumped from WHERE?

          If you look at the normal water cycle, that's pretty much what Hoover Dam is... We let the sun evaporate the water, it rains/snows up stream, and we recover the energy on the way down. Huge solar collector...

  • by mspohr ( 589790 ) on Monday September 08, 2014 @01:05PM (#47853777)

    This confirms my suspicion that Tesla is really a battery company masquerading as a car company. The cars are just a vehicle to sell lots of batteries ;).
    The grid in Reno might have a problem handling large swings in renewable power but since the factory should have lots of batteries, they can use them to smooth out the power fluctuations and use this as a demo site to sell battery grid backup systems.

  • So 1800 of the 2900 MWh of power is based on the ability to count the number of wind turbines shown in the marking picture of the factory? And we are taking this as truth of the number that are deploy-able in the area. This based on the fact that they are building the building Magnetic north aligned to help with GPS? Wow - lets grab Tesla's marketing materials and just swallow what comes out.
  • Wind is going for 2.5 cents per kWh http://www.greentechmedia.com/... [greentechmedia.com] and solar is going for 5 cents a kWh http://www.greentechmedia.com/... [greentechmedia.com] Why would you pay more?
    • by bobbied ( 2522392 ) on Monday September 08, 2014 @02:05PM (#47854369)

      Why would you pay more?

      Natural Gas is cheaper! Why pay more?

      Not to mention your numbers are a bit on the wishful thinking side of reality. http://en.wikipedia.org/wiki/C... [wikipedia.org]

      According to the government's numbers, Natural Gas is 73% the cost of wind on average, and Solar is nearly 3 times more expensive than Natural Gas. Of course this is IN THE USA (important to remember) and does NOT include tax incentives or funding deals afforded renewable projects, but only actual costs for construction, fuel, and decommissioning the plant after 30 years. (this is the fully burdened cost which actually is more favorable to renewables which have HUGE upfront costs and no fuel costs over time.)

      Of course if you WANT to pay more.. Feel free... Which is apparently the case with Tesla. There business model is not about selling cheap cars to the have not's to maximize profits, theirs is a niche market, selling high priced low volume vehicles to the super-rich "have's" who need to appear as champions of the environment and don't mind paying for the appearance of actually caring. Those who want to drive carbon free to catch their chartered jet for their tropical vacation.

      • by MrL0G1C ( 867445 )

        Natural Gas is cheaper! Why pay more?

        Because the price of gas is expected to go up, reasons being: dozens of gas power stations currently being built and the fact that gas is currently so cheap that some of the Frackers are selling their gas at below cost. Also relevant is that the cheapest resources are typically mined first, this is particularly the case with the current gas fracking boom, the current low gas price is highly unlikely to remain low after a handful of years.

        Wind and sunlight OTOH are expect

      • So, gas is trading around $4/MMBTU and you get about 175 kWh of electricity from that $4 with a good combined cycle gas plant. So, the fuel cost is about 2.5 cents per kWh, about the same as delivered wind power. For a peaker plant, competing with solar, the fuel cost would be over 5 cents per kWh. That is just the fuel cost. So, why pay more?
      • by geekoid ( 135745 )

        well..
        A) Natural gas is finite.
        B) Natural gas has other uses instead of just generating power. I thing saving a natural resource for other thing is a better long term strategy.
        C) Natural gas price will continue to rise.

        Don't be caught in the natural gas bubble. It's temporary. Waiting until we are out of other source would be a pretty bad time to start trying to get more renewals.

        "Those who want to drive carbon free to catch their chartered jet for their tropical vacation."
        ad hom and a non sequitor.
        You have

        • well.. A) Natural gas is finite. B) Natural gas has other uses instead of just generating power. I thing saving a natural resource for other thing is a better long term strategy.

          A and B are obviously true, although A is arguable in practical ways. Creating methane is not that hard. I agree with you on B, Natural Gas is better suited to other things (motor fuel and heating) but it is a CLEAN source of heat to generate electricity from and that's why it's being used, well that and it burns really clean compared to other fuels.

          C) Natural gas price will continue to rise.

          However, C is where we really part company. Short term, Natural Gas is NOT going to rise in price. In fact the projections are for steady to falling natural

      • by dfsmith ( 960400 )

        Here's a chart of 25 years of natual gas prices [barchart.com]. See if you can work out why NG is not a panacea.

  • by YesIAmAScript ( 886271 ) on Monday September 08, 2014 @02:16PM (#47854499)

    From the article:

    "Reno gets an average of five peak sun hours per day."

    Remember, as soon as you say the word "average" you are counting on a huge amount of storage so that you get the average amount of energy every day, even if that day is below average. And even if every day for the last two weeks has been below average.

    In in fact, if you are using solar, you have to understand that nearly every day between the autumn equinox and the spring equinox is below average. That means you need enough storage to store up electricity all summer so you can use it in the winter! This is not at all realistic. More realistic is to make sure you produce more than you need in the summer and enough in the winter.

    This does use more than solar though. However, I can't believe this guy counted the windmills in a PR picture.

    Anyway, buying and erecting a 3MW windmill costs about $10M. That would mean Tesla would spend $850M on windmills. You cannot seriously think that Tesla is going to spend $850M on windmills before the plant even opens.

    • "you are counting on a huge amount of storage"

      Remember, this is a battery manufacturing plant. They may have an idea or two about huge amounts of storage.

      • And those batteries cannot hold a charge for 6 months anyway.

        Even if they could, you're talking about a deficit of about 1/3rd at the peak of winter and a corresponding surplus in the summer. So let's assume you have a 1/3rd total energy surplus for 2 months in the summer and have to hold it 6 months until winter where you use it up.

        That'd be 2900MWh times 61 or 177GWh. that's 177M kWh. A Tesla pack holds 85kWh, let's assume it's about to become 100kWh. And the pack costs over $10K, we'll assume it costs $5

  • They'll test the batteries? Wonder if they'll ship them charged? Wonder if there might be lots of storage available if the answers are yes and no respectively.
    • by tomhath ( 637240 )
      The logistics of connecting, charging, discharging, disconnecting enough batteries to make a difference seems very uneconomical.

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