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  1. Re:Wait, what?! on Largest US Power Storing Solar Array Goes Live · · Score: 1

    How much if you include batteries for the solar cells?

  2. Re:14c/kWh on Largest US Power Storing Solar Array Goes Live · · Score: 1

    They do. Every single trough rotates to face the sun.

  3. Re:It's not a racetrack on World Solar Challenge To Start In Less Than Two Weeks · · Score: 1

    They used to be able to lie down. Now they have to be sitting.

  4. Re:We had the warning years ago with downloading.. on What Will Ubiquitous 3D Printing Do To IP Laws? · · Score: 1

    Yes, if you have the materials to print a solar panel (I estimate it will take about 5 years until somebody successfully prints a primitive one).

    you mean like this solar panel?

    http://mashable.com/2013/05/17/print-a3-sized-solar-cells/

  5. Re:Austrailians as stupid as Americans? on Australia Elects Libertarian-Leaning Senator (By Accident) · · Score: 1

    The instructions say you must fill in every square, but the savings provision of the act require that only 90% of the squares be filled in, and will allow a maximum of three sequencing errors. A sequencing error is any doubling up of numbers and any break in the number sequence.

    http://blogs.abc.net.au/antonygreen/2013/08/voting-below-the-line-in-the-senate.html

  6. Re:since you're there anyway... on How Africa Will 'Leapfrog' Wired Networks · · Score: 1
  7. Re: Sounds good to me on U.S. Gov't Still Fighting the Man Behind Buckyballs; Guess Who's Winning? · · Score: 1

    Bad burn, yes, and worse thinking. But that's just it: she wasn't thinking. Her lawyer was, and McDonalds caved. If I remember from the story, McD had already offered to pay her full medical bills and then some, but that wasn't good enough.

    If I recall correctly the amount they offered did not even cover her medical bills.

  8. Re:Hmm... on The Golden Gate Barrage: New Ideas To Counter Sea Level Rise · · Score: 1
  9. Re:Or... on The Golden Gate Barrage: New Ideas To Counter Sea Level Rise · · Score: 1

    Why have other hurricanes not hit Manhattan?

  10. Re:Or... on The Golden Gate Barrage: New Ideas To Counter Sea Level Rise · · Score: 1

    Sure if you built a very long tunnel through a mountain.

    Strangely they did not build at sea level when they built the canals but a series of locks instead.

  11. Re:Don't forget passenger comfort on Elon Musk's 'Hyperloop': More Details Revealed · · Score: 1

    Do Sapphires count?

    from wikipedia:

    https://en.wikipedia.org/wiki/Sapphire#Common_applications
    A common use of synthetic sapphire is in sapphire optical windows. The key benefits of sapphire windows are:

  12. Re: Why is this on Slashdot? on 10 Wearable Habitats To Shelter You From the Apocalypse · · Score: 1

    In the end of civilization as we know it you are really concerned for your concealed weapon to be legal?

    Because you want your weapon on hand and to do that means carrying it during non end of civilization times.

  13. Re:Voting in Australia is easy on Man Formerly Charged With Rigging Student Ballot Exposed As Labor Official · · Score: 1

    Not quite anyone in the country. If you are interstate only some of the stations allow interstate voting.

    You don't even have to be busy, if you live more then some distance away from a station you can absentee vote.

  14. Re:the Alberta Supernet on Small Town Builds Its Own Gigabyte Network; Cost To Citizens $57/month · · Score: 1

    Apparently UPS and Fedex actually use the post office to deliver some of the mail.

  15. Re:Depends on the energy source duh! on Electric Vehicles Might Not Benefit the Environment After All · · Score: 1

    I think the reduction in energy returns is not due to the refining but the drilling

  16. Re:CO2 at an active volcano? Who wudda thot? on CO2 Levels Reach 400ppm at Mauna Loa For First Time On Record · · Score: 1

    If they put it on the volcano then wouldn't all the measurements include the volcano emissions? In which case the increase must be from somewhere other then the volcano?

  17. Re:The betting pool is now open... on Microsoft Prepares Rethink On Windows 8 · · Score: 1

    I think this comic https://xkcd.com/1102/ shows the problem with percentage increase

  18. Re:The Stupidity, It Hurts! on Video Game Industry Starting To Feel Heat On Gun Massacres · · Score: 1

    http://www.theage.com.au/national/australians-restock-the-gun-racks-20130113-2cnmu.html

    AUSTRALIANS own as many guns now as they did at the time of the Port Arthur massacre,

  19. Re:The Stupidity, It Hurts! on Video Game Industry Starting To Feel Heat On Gun Massacres · · Score: 1
  20. Re:Bad headline again. on Walgreens To Build First Self-Powered Retail Store · · Score: 1

    http://www.windustry.org/resources/how-much-do-wind-turbines-cost
    Most of the commercial-scale turbines installed today are 2 MW in size and cost roughly $3-$4 million installed.

    so 9-12 million per 2MW (when you figure out a 33% usage) or 4.5 million - 6 million per MW

    ----

    http://www.powerengineeringint.com/articles/2012/07/chile-suspends-endesas-planned-14-bn-thermal-power-project.html
    1.8 million per MW

    http://hypertextbook.com/facts/2006/LunChen.shtml
    Each ton of coal consumed at an electric power plant produces about 2000 kilowatt hours of electricity (or 2 megawatt hours)

    10*24*365/2=43800tons of coal in 10 years

    http://www.indexmundi.com/commodities/?commodity=coal-australian&months=60
    Seems to be $100 per ton of coal

    43800*$100 = 4.38 million

    Cost for a new coal power station(including the coal over 10 years) = 6.18 million per MW
    ----

    For solar

    http://www.lowenergydevelopments.com.au/index.php?route=product/product&path=69_75&product_id=138
    $10,000 for a 5KW system (assuming $1,000 to install)

    http://aussiervproducts.com.au/webcontent4.htm
    Using 4.5 hours

    5kw,10years,4.5 average,365 days
    5*10*4.5*365=82,125KWh generated
    12.17c/kwh($122/MWh)

    Yes it is more then the $50/MWh the generators are getting here but a lot less then >$250/MWh we pay retail.

    Using just 2KW locally with no money for the excess would cost you $307/MWh for the system.
    The other 3KW that you export (at the $50/MWh) would get you to $229/MWh which is less then the price we pay for grid power.

  21. Re:Bad headline again. on Walgreens To Build First Self-Powered Retail Store · · Score: 1

    First it was a 50 watt bulb not a 100 watt bulb you were talking about.

    http://www.gsl.com.au/240v-inverters-pure-sine-wave.html has a 82% efficiency inverter.

    50/.82 is about 60 watts.

    50 watts at 12volts is the same amount of power as 50watts at 110V. The thing that changes when you change the voltage is the current.

    50 watts/12 volts = 5 amperes, 50watts/110V = 0.45 amperes

    100watts/110volts = 0.9 amperes. Just under 1.

  22. Re:Concrete? Steel? on Walgreens To Build First Self-Powered Retail Store · · Score: 1

    OK, call me cynical. How much energy will forging the steel, making the glass, and making the cement for the concrete burn? How much energy will transporting all these new materials to site, and transporting away the demolition rubble, burn? For how many additional years could you have run the old store for the environmental cost of building the new one?

    Car analogy, since we like car analogies round here. Your new Prius may be wonderfully energy efficient, but creating it burned so much energy that keeping your twenty-five year old V8 on the road for three years longer is better for the environment.

    Making a Prius consumes 113 million BTUs, according to sustainability engineer Pablo Päster. A single gallon of gas contains about 113,000 Btus, so Toyota's green wonder guzzles the equivalent of 1,000 gallons before it clocks its first mile.

    How many gallons does a normal car guzzles during it's production?

  23. Re:Bad headline again. on Walgreens To Build First Self-Powered Retail Store · · Score: 1

    When you take into account the inverter it would probably be a 60watt panel to power the light bulb.

  24. Re:Proportional voting == bad idea on The US Redrawn As 50 Equally Populated States · · Score: 1

    But they only have the power if the two groups of 45% disagree.

  25. Re:Place names on The US Redrawn As 50 Equally Populated States · · Score: 1

    Have you ever had a President who got more then 50% of the people who could vote?

    Unless you are talking about who actually voted. In which case he got 51% which is not a minority.