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Solar Energy Becoming More Pervasive

TheUploader writes "RenewableEnergyAccess is reporting that Solatec LLC has released a stick-on solar panel kit that charges your hybrid while parked. In related news, the world's largest photovoltaic system will be built, not on the roofs of Priuses, but on the ground of Nevada, and will provide clean energy for the US military."

24 of 484 comments (clear)

  1. How to market!? by JDSalinger · · Score: 5, Informative

    The Prius has an MSRP of $21,725. At 10% the cost of the car, the solar panel kit ($2,195) seems like a reasonable deal, considering it facilitates 10% better gas mileage. At 55 mpg, the gas cost to drive 200,000 miles (at $2.20/gallon) is $8,000. At 60 mpg, the gas cost to drive 200,000 miles (at $2.20/gallon) is $7,333. The difference is $666. Considering the kit costs over three times what the gas savings amount to, it is hard to market on account of good money-sense. The only consolation is the concept of helping mother nature. I have limited understanding of the fabrication process of the solar panels, so it would be hard to say whether or not mother nature profits from this scenario.

    1. Re:How to market!? by 99BottlesOfBeerInMyF · · Score: 4, Interesting

      Yeah...but, it looks like CRAP. Can't they make these 'green' cars look nice and sporty?

      They hit the economy car segment first, because that is where is is marketable as a gas saving feature. For sports cars, however, you'll be seeing hybrids very soon from a number of different manufacturers and they will be very, very fast to accelerate off the line, given the benefits of stable power at the low end of the spectrum. Toyota and Mitsubishi's concept demos this year seemed particularly nice.

    2. Re:How to market!? by CastrTroy · · Score: 4, Insightful

      Why are people even buying cars in the first place? If you city has good public transit, you could take the bus back and forth to work each day, and rent a car for the weekends for less then the price of owning a car. $15 a day to rent a car, plus $15 a day for insurance, that's $30 a day, times 8 days for weekends in a month, and you at $240 a month. That covers insurance, and your car. You'd never have to pay for repairs, and you'd never have to worry about your car breaking down. You probably don't even need a car every weekend, so your costs go down. If you just rented a car every time you really needed to use a car, you'd probably spend a lot less. I realize that some people need to commute long distances to get to work, but there's plenty of people who don't. If you don't need your car to get back and forth to work every day, you probably don't need a car at all.

      --

      Anthropic principle: We see the universe the way it is because if it were different we would not be here to see it.
    3. Re:How to market!? by taniwha · · Score: 4, Informative

      can't agree more - my prius will drag just about anyone from a standing start, especially on a hill - it's that high torque electric motor that does it - instant power you just don't get from an gas engine without trashing your clutch

    4. Re:How to market!? by wattersa · · Score: 5, Interesting

      > Why are people even buying cars in the first place? If you city has good public transit, you could take the bus back and forth to work each day, and rent a car for the weekends for less then the price of owning a car. $15 a day to rent a car, plus $15 a day for insurance, that's $30 a day, times 8 days for weekends in a month, and you at $240 a month.

      I'll answer the economic question first and the philosophical question second. I live in San Francisco near SF State, my job is 12 miles away on the Peninsula, and my commute options are:
      *Driving*
      Ford Crown Victoria LX: $15488 in August 2000, pre-owned with 23,000 miles.
      4.6L V-8, 200 horsepower, 17/25 mpg (22 overall). 88,000 miles driven in 5.5 years = 16,000 miles/year. Gas costs at $2 per gallon avg over last 5.5 years = $1500 per year = $4 per day.
      Insurance: $68 per month with all my discounts = $2.27 per day.
      Maintenance: 3 oil changes per year at $60 at Jiffy Lube plus misc. maintenance averaging $300 per year = $480/yr = $1.30 per day.

      Total consumables cost per day of car use for ownership: $7.57 per day, assuming equal use on all days of the year (long trips on weekends make up for non-use, etc).
      Depreciation: car now worth $4500 = $11,000 depreciation over 5.5 years = $2000/yr = $5.50 per day.

      Total cost for car ownership, daily use for commuting and pleasure, etc etc: $13.07 per day.
      Time spent commuting: ~35 minutes per day for a 24 mile round trip. My car is in my apartment garage so I walk directly to it, drive to the office garage, and walk into the office.

      The question is whether public transit costs more than that amount per day.
      *Public Transit*
      Bus to Daly City BART station: $1.50, 10 minute walk away, ~5 minutes spent waiting for the bus. 5 minute ride to BART.
      $1.75 for BART ticket. 5-10 minutes spent waiting for train.
      20 minute train ride to Millbrae.
      Transfer to Caltrain, $1.50 ticket.
      10 minute train ride.
      Walk 5 minutes to office in downtown San Mateo.
      One-way cost: $4.75
      Time spent: 62 minutes.
      Double it for daily total: $9.50, 120 minutes avg.
      Assume use is halved on weekends for recreation, $4.75 and 60 minutes.

      Car: $4770 per year = $13.07 per day avg.
      Public transit: $2825 per year = $7.70 per day avg.

      Car: 35 minutes per day transit time
      Public transit: 98 minutes per day
      The question now is whether the time difference makes up for the higher cost of ownership. During the week I make $45 per hour. I save over an hour per day by driving. So I can work more per day and still have the same amount of leisure time as if I worked less and took public transit. If I work the full extra hour, I make an extra $39.63 per day by driving!

      Now the philosophical argument.

      For people under time pressure, public transit is the worst. You end up wasting a lot of time waiting around, getting tickets, waiting in line, waiting in the terminal, walking between trains, climbing stairs, and the like. Then you have the often neglected and graffittied vehicles filled with somber, depressed people. Not to mention panhandlers, drug addicts, and blabbermouths on their cell phones trying to catch up on work and not getting much done. I would rather work (and get paid for it) than spend time sitting in a train waiting to arrive at the next station. In my car I have the ultimate freedom in transport: I'm reverse commuting, which means no rush hour traffic and no waiting, I have my iPod hooked up and I can replay the same song 100 times in a row if I want, and I can take a beautiful leisurely drive on highway 280 south, "the world's most beautiful freeway," and luxuriate in the knowledge that if nothing else, I made it in life to the extent that I can afford to drive to work until gasoline reaches about $18 per gallon because I use less than two gallons per day and made that extra $39. Driving makes absolute sense to me, especially as cars get more efficient. Add to that the freedom of being able to go wherever I want at any

    5. Re:How to market!? by drinkypoo · · Score: 3, Interesting
      Actually, the problem is that you don't get instant torque from a gasoline engine. Electric motors make peak torque at 0 RPM. However, my car has only 155bhp and 155ft-lb stock, and I have nothing more than intake/exhaust for performance, and I will roast your little bimbo box hybrid off the line, because I have a hard suspension (no squat) and a close-ratio transmission. Trust me, I've done it before :P (And for all those others out there reading this, no, I don't think it was an impressive feat.)

      And uh, clutches were meant to be trashed :)

      --
      "You're right," Fisheye says. "I should have set it on 'whip' or 'chop.'"
    6. Re:How to market!? by Valdrax · · Score: 3, Insightful

      It isn't being superficial...it is getting what I want. Life is way too short not to do and get what you want to make your life happy.

      That sums up everything that is wrong about modern consumer society in two sentences.

      --
      If it's for-profit but free, you're not the customer -- you're the product (e.g., the Slashdot Beta's "audience").
    7. Re:How to market!? by bobcat7677 · · Score: 3, Insightful

      That figure of "0 battery packs replaced in prius ever" is misleading. Toyota is quick to make this claim...but it's based on some tricky definitioning. I have seen several accounts in different forums of people getting their battery packs replaced in the prius under warranty. Toyota claims that no batteries have been replaced for being "worn out". The way they get away with this is by labelling all the batteries they have to replace as "defective" instead of "worn out". I find it difficult to believe though that someone could have their car a year and put 70 - 100,000 miles on their car before deiscovering that their battery pack is "defective". Linakage: http://www.hybridcars.com/discussion/discussthread .php?thread_id=254&replies=9

  2. Let's triple the petrol cost. by CyricZ · · Score: 4, Insightful

    Let's triple or quadruple the cost of petrol, for instance, perhaps due to a stagnant American economy or an American attack on Iran. Now you may just see some benefits to such a system. Of course, if the prices rise quickly on such an essential commodity, things might change relatively fast. You may not have a job to drive to, for instance.

    --
    Cyric Zndovzny at your service.
    1. Re:Let's triple the petrol cost. by Rei · · Score: 3, Informative

      A good polyurethane substitute can be produced from soy. Most plastics, lubricants, hydraulic fluids, artificial rubbers, and the host of other petroleum products critical to modern society don't have very good biosubstitutes.

      However, if power becomes cheap, that's not a problem. Hydrogen + CO + pressure and heat produces a mixture of various hydrocarbons; that's how the Nazis produced oil late in WWII.

      --
      It's time for Operation Crazy Plan.
  3. Re:Economics working as usual. by gebbeth · · Score: 5, Insightful
    So often we hear fuss about our petrol supply running out. Sure, perhaps someday it will. But like usual, basic economics will take care of the situtation for us. When one energy source becomes increasingly scarce, it will become more expensive.

    Thats all well and good if all you use oil for is fuel. We use oil heavily in the production of all sorts of products, including plastics and a whole plethora of petrochemicals. We should curtail our oil user as a fuel now so that we can continue to use oil for its other users without having to pay 5 times the current price for a plastic toothbrush.

    --
    A closed mouth gathers no foot.
  4. Re:I thought that... by sonofagunn · · Score: 5, Funny

    Yeah, that would fit on the roof of a Prius.

  5. Re:Hybrids/Electic purity by CyricZ · · Score: 4, Funny

    It's widely known that those men want want loud and/or fast cars are often the men with the smallest penises.

    It is also widely known that compared to other men, American men have by far the smallest penises in the world. They try to make up for their genital deficit by driving the biggest, nosiest vehicles they can debt themselves into.

    Frankly, I'm glad I'm European, and I ride a bicycle. The only problem I run into is keeping my cock from getting tangled in the bike chain.

    --
    Cyric Zndovzny at your service.
  6. What about Stirling Engines? by AK+Marc · · Score: 3, Interesting

    I thought http://www.stirlingenergy.com/ was a better solution

    1. Re:What about Stirling Engines? by stefanlasiewski · · Score: 3, Informative

      I spoke to one of the engineers a few years ago. They clean it exactly as you would expect: with some light detergent and a hose. No rubbing-- scraches the mirrors and requires more effort then a simple hosing down.

      In one test, they attached little sprayers (I think they were using the sprayers from a drip irrigation system) to the panels to spray it down every morning. Worked pretty well.

      --
      "Can of worms? The can is open... the worms are everywhere."
  7. Facts don't see to match hype. by pdawson · · Score: 5, Informative

    Sadly, based on my understanding of the product described in the article, I don't see any way it can achieve any real MPG improvement. It only charges the small accessory 12V battery used for starting the car and running the power accessories(AC, steering, radio, etc). It provides no juice to the 28 200V main battery bank modules that power the engine.

    1. Re:Facts don't see to match hype. by pdawson · · Score: 3, Interesting

      It's called "conservation of energy". The energy in that 12V battery has to come from somewhere. If it comes from solar panels instead of from gasoline, you're using less gasoline. Period.


      Yes, but even if it eliminated the need to charge the single 12V battery at all, that does not account for 10% of the car's energy usage, 1-3% perhaps, as compared to the 28x 200V NiMh modules.
  8. Re:Not my kind of option... by Adult+film+producer · · Score: 3, Interesting

    You need something like this then... although it's not really suited for anything other than hotdogs. http://sci-toys.com/scitoys/scitoys/light/solar_ho tdog_cooker.html

    There are plenty of designs available for nice solar ovens & fryers.. anything collapsible is usually a little more work, but worth the effort.

  9. But you're not getting the full picture. by CyricZ · · Score: 5, Insightful

    Yes, a particular product today may require oil. But as the price of oil increases due to increased scarcity, manufacturers will instead switch to relatively cheaper non-oil alternatives. So often times you'll end up getting the same products, but they'll be made of a different, cheaper material.

    It's happened with coins, for instance. While certain coins one contained large amounts of copper, they now are made mostly of zinc with a thin coating of copper.

    Remember, plastic is only used so often today because it is so cheap. Once the price of plastic rises, people will switch to other materials which are relatively cheaper.

    I lived a good portion of my life before plastic became widespread. We used glass bottles instead of plastic bottles for many drinks, for instance. Somebody who grew up only using plastic might have a difficult time accepting the idea of not using plastic products. But it's more than possible, and was reality even just a few decades ago.

    --
    Cyric Zndovzny at your service.
  10. Slashdotted! by Frazbin · · Score: 5, Funny

    Looks like a CLOUD passed over their SERVER FARM!

    Ha! Ha ha! Ha! Ha, ha ha! Ha ha, ha, ha!

    Ah, renewable energy! Endless mirth!

  11. Hydrogen Farming by Nom+du+Keyboard · · Score: 3, Interesting
    I think it would make more sense to put solar cells out in the desert (there's lots of square miles of desert) near water and existing natural gas pipelines. Use the sunlight to make hydrogen, oxygen, and heavy water. Ship the hydrogen through the natural gas system (yes you can do this) as a substitute for natural gas. Take the oxygen away in tanker trucks for industrial use, and sell the heavy water to the government. There is no pollution, demand peaks, or major changes necessary to make use of this resource.

    Then pay me my commission on this idea that I never hear talked about otherwise in any serious manner.

    --
    "It's the height of ridiculousness to say for those 9 lines you get hundreds of millions."
  12. Re:Go VW! by RingDev · · Score: 3, Informative

    "Significantly, particulate emissions have been reduced by over 90 percent in the past 15 years." - http://www.greencar.com/index.cfm?content=features 13

    "The TDI is certified to the tough minimum Tier 1 requirement - this is the stringent California standard for what is permitted from a car's tailpipe. The TDI could have been certified to even stricter requirements if not for NOX and particulate emissions, which are naturally higher in diesel engines because of their exceptional combustion efficiencies.

    Volkswagen is confident these NOX levels can be lowered using new technology if the sulfur level in our nation's diesel fuel was reduced. For this very reason, Volkswagen and the other members of the Alliance of Automobile Manufacturers have advocated lower federal sulfur content standards in both diesel and gasoline fuels." - http://tedshelton.blogspot.com/2005/11/good-custom er-service-from-vw.html

    There's plenty more out on the web. the TDI with current US petrol diesel will have a higher particulate rate per gallon spent, but a lower rate per mile due to their improved efficiency.

    -Rick

    --
    "Most people in the U.S. wouldn't know they live in a tyrannical state if it walked up and grabbed their junk." - MyFirs
  13. Put solar on your house, not the car by protonbishop · · Score: 4, Interesting
    disclaimer: that's what I do(I have a electric car, so I plug it in at night).

    Putting solar cells on your car is dumb:

    1. deal with aerodynamics (not a problem with my house)
    2. can't orient cells correctly (hard enough finding a close parking space, now you have to have one in the sun, with a WSW tilt (for us northern hemispherians)
    3. ANY SHADE across solar panels, even a tree branch, dramatically decreases its efficiency (like having one dead battery in your flashlight: the whole thing fails).
    4. size matters... 1kW system is about 120 square feet -- that's just not going to power much of a car. Consider 400wh to power car one mile & assume you get 5 equivalent hours/day parking & 30 square foot car top. That's enough power to drive 4 miles when the sun shines.

    Having PV grid-tied, means you feed electricity onto the grid at typically peak usage times, then recharge your car at night at off peak rates.

  14. Re:Go VW! Diesel is more! by Kadin2048 · · Score: 3, Interesting

    The other thing that needs to be considered is what kind of driving you do.

    A gasoline hybrid like the Prius gets its best mileage in city, stop-and-go driving, because of the regenerative braking.

    A diesel engine gets its best milage while cruising on the highway at a basically constant speed, in the transmission's highest gear.

    I used to drive a diesel VW and *loved* it. It was fun to drive (torquey as hell) and had excellent highway range, well in excess of 500 miles to the tank. However that mileage went into the toilet if I had to do a lot of stop and go driving. Still better than a conventional gasoline car for the same driving, but nothing like a hybrid.

    I think there will be a place for both types of vehicles in the future, and which one is most efficient for you depends on the type of driving you do. For me, it's almost highway driving -- a hybrid wouldn't have much of an advantage.

    The other thing to consider is the air conditioning and heating requirements. I have heard it said that the hybrids derive a lot of their fuel savings by being able to shut off the gas engine when it's not needed (in city driving), but that if you have the A/C running, it won't shut off because there's no way to run the compressor electrically. If anyone can verify this I'd be interested ... but if it's true, it could seriously impact the efficiency numbers in certain climates. A diesel engine sees some efficiency hit as a result of the A/C compressor, but its not that significant. (I measured the MPG of my VW with the compressor running and not, and could never get a good handle on what the change was. It was below the error caused by month-to-month differences in my driving style, anyway.) I don't know about anybody else, but I am not prepared to drive without air conditioning, at least until gas is well into the double-digit dollars per gallon.

    What I would like to see is a diesel-electric hybrid: combine the best of both worlds.

    I also wish that there was some sort of tax relief for diesel passenger vehicles on the diesel fuel taxes, which are really excessive. They're aimed at truckers, but they've had the side-effect of making diesel artifically expensive relative to gasoline, and hurting diesel car development in the US. This is too bad, because it's a technology that really has a lot of potential. There are better/alternative ways of taxing trucking than putting a tax on diesel fuel. At the very least, we should have some sort of rebate program to allow diesel passenger car owners to get back the difference in taxes they pay over an equivalent amount of gasoline (if not the amount of gasoline that they would have needed to buy to drive the same number of miles, which would be more fair).

    --
    "Ladies and gentlemen, my killbot features Lotus Notes and a machine gun. It is the finest available."