Posts Tagged ‘batteries’

Another Opinion About Alternative Energy

Sunday, April 25th, 2010

     This week we’re continuing our discussion on alternative energy by introducing another voice.  A couple of articles ago you were urged to seek a second opinion on the realities of alternative energy.  The following article in the Washington Post by Robert Bryce will constitute another attempt to get a full understanding of the picture.  Consider it your third professional opinion on the matter…
Five myths about green energy
By Robert Bryce

      Americans are being inundated with claims about renewable and alternative energy. Advocates for these technologies say that if we jettison fossil fuels, we’ll breathe easier, stop global warming and revolutionize our economy. Yes, “green” energy has great emotional and political appeal. But before we wrap all our hopes — and subsidies — in it, let’s take a hard look at some common misconceptions about what “green” means.

1. Solar and wind power are the greenest of them all.

     Unfortunately, solar and wind technologies require huge amounts of land to deliver relatively small amounts of energy, disrupting natural habitats. Even an aging natural gas well producing 60,000 cubic feet per day generates more than 20 times the watts per square meter of a wind turbine. A nuclear power plant cranks out about 56 watts per square meter, eight times as much as is derived from solar photovoltaic installations. The real estate that wind and solar energy demand led the Nature Conservancy to issue a report last year critical of “energy sprawl,” including tens of thousands of miles of high-voltage transmission lines needed to carry electricity from wind and solar installations to distant cities.

     Nor does wind energy substantially reduce CO2 emissions. Since the wind doesn’t always blow, utilities must use gas- or coal-fired generators to offset wind’s unreliability. The result is minimal — or no — carbon dioxide reduction.

     Denmark, the poster child for wind energy boosters, more than doubled its production of wind energy between 1999 and 2007. Yet data from, the operator of Denmark’s natural gas and electricity grids, show that carbon dioxide emissions from electricity generation in 2007 were at about the same level as they were back in 1990, before the country began its frenzied construction of turbines. Denmark has done a good job of keeping its overall carbon dioxide emissions flat, but that is in large part because of near-zero population growth and exorbitant energy taxes, not wind energy. And through 2017, the Danes foresee no decrease in carbon dioxide emissions from electricity generation.

2. Going green will reduce our dependence on imports from unsavory regimes.

     In the new green economy, batteries are not included. Neither are many of the “rare earth” elements that are essential ingredients in most alternative energy technologies. Instead of relying on the diversity of the global oil market — about 20 countries each produce at least 1 million barrels of crude per day — the United States will be increasingly reliant on just one supplier, China, for elements known as lanthanides. Lanthanum, neodymium, dysprosium and other rare earth elements are used in products from high-capacity batteries and hybrid-electric vehicles to wind turbines and oil refinery catalysts.

     China controls between 95 and 100 percent of the global market in these elements. And the Chinese government is reducing its exports of lanthanides to ensure an adequate supply for its domestic manufacturers. Politicians love to demonize oil-exporting countries such as Saudi Arabia and Iran, but adopting the technologies needed to drastically cut U.S. oil consumption will dramatically increase America’s dependence on China.

3. A green American economy will create green American jobs.

     In a global market, American wind turbine manufacturers face the same problem as American shoe manufacturers: high domestic labor costs. If U.S. companies want to make turbines, they will have to compete with China, which not only controls the market for neodymium, a critical ingredient in turbine magnets, but has access to very cheap employees.

     The Chinese have also signaled their willingness to lose money on solar panels in order to gain market share. China’s share of the world’s solar module business has grown from about 7 percent in 2005 to about 25 percent in 2009.

     Meanwhile, the very concept of a green job is not well defined. Is a job still green if it’s created not by the market, but by subsidy or mandate? Consider the claims being made by the subsidy-dependent corn ethanol industry. Growth Energy, an industry lobby group, says increasing the percentage of ethanol blended into the U.S. gasoline supply would create 136,000 jobs.  But an analysis by the Environmental Working Group found that no more than 27,000 jobs would be created, and each one could cost taxpayers as much as $446,000 per year. Sure, the government can create more green jobs. But at what cost?

4. Electric cars will substantially reduce demand for oil.

     Nissan and Tesla are just two of the manufacturers that are increasing production of all-electric cars. But in the electric car’s century-long history, failure tailgates failure. In 1911, the New York Times declared that the electric car “has long been recognized as the ideal” because it “is cleaner and quieter” and “much more economical” than its gasoline-fueled cousins. But the same unreliability of electric car batteries that flummoxed Thomas Edison persists today.

     Those who believe that Detroit unplugged the electric car are mistaken. Electric cars haven’t been sidelined by a cabal to sell internal combustion engines or a lack of political will, but by physics and math. Gasoline contains about 80 times as much energy, by weight, as the best lithium-ion battery. Sure, the electric motor is more efficient than the internal combustion engine, but can we depend on batteries that are notoriously finicky, short-lived and take hours to recharge? Speaking of recharging, last June, the Government Accountability Office reported that about 40 percent of consumers do not have access to an outlet near their vehicle at home. The electric car is the next big thing — and it always will be.

5. The United States lags behind other rich countries in going green.

     Over the past three decades, the United States has improved its energy efficiency as much as or more than other developed countries. According to data from the Energy Information Administration, average per capita energy consumption in the United States fell by 2.5 percent from 1980 through 2006. That reduction was greater than in any other developed country except Switzerland and Denmark, and the United States achieved it without participating in the Kyoto Protocol or creating an emissions trading system like the one employed in Europe. EIA data also show that the United States has been among the best at reducing the amount of carbon dioxide emitted per $1 of GDP and the amount of energy consumed per $1 of GDP.

     America’s move toward a more service-based economy that is less dependent on heavy industry and manufacturing is driving this improvement. In addition, the proliferation of computer chips in everything from automobiles to programmable thermostats is wringing more useful work out of each unit of energy consumed. The United States will continue going green by simply allowing engineers and entrepreneurs to do what they do best: make products that are faster, cheaper and more efficient than the ones they made the year before.

Robert Bryce is a senior fellow at the Manhattan Institute. His fourth book, “Power Hungry: The Myths of ‘Green’ Energy and the Real Fuels of the Future,” will be out Tuesday, April 27.

To visit the Washington Post article above go to:


Alternative Energy And Its Impact On Our Electrical Grids

Sunday, April 11th, 2010

     This week’s blog is a re–publication of a web article by Alex Salkever which appeared on April 6, 2010, in Daily Finance, an AOL Money and Finance site.  It’s an excellent followup to last week’s blog on wind turbine energy, which raised concerns as to the feasibility of its widespread use.  It’s always good to have multiple sources of information when assessing the value of anything, such as when you seek a doctor’s second opinion, and this article serves that purpose.  Enjoy!

Too Green, Too Soon? Renewable Power May Destabilize Electrical Grid

By Alex Salkever

     Boy, that was fast. Only five years into the world’s renewable energy push, many utility companies are so concerned about grid instability that they’re saying they can’t accept any more electricity from intermittent sources of power. Translation: Solar power only runs in the day time and can’t re relied on for so called “baseload” capacity. Wind power primarily produces current at night and, likewise, can’t be relied upon for baseload capacity. Geothermal, meanwhile, is perfect for providing baseload. But geothermal projects take an excruciatingly long time to build out. And then there have been the recent spate of earthquake scares around geothermal sites.

     The upshot: Utilities such as Hawaiian Electric in President Obama’s home state are voicing concerns about plans to integrate more solar and wind power into the grid until they develop methods to more effectively absorb intermittent sources of power without destabilizing the whole shebang. In Europe, Czech utility companies are concerned that “feed-in tariffs,” which require power companies to repurchase all home- and business-generated renewable power at elevated rates, might wreak havoc on the Central European grid.

     This growing push-back from utilities could prove to be shock to energy project developers, lawmakers and homeowners. In the U.S., project developers and state lawmakers have assumed that the ambitious laws mandating as much as 40% of some states’ power come from renewable sources within the next few decades would ensure huge demand for green power as utilities scaled up their use of such resources from low single-digit levels. Likewise, homeowners have tended to assume that if they could put a panel on their roof (or a windmill on their property), they would be guaranteed a market for the extra power produced.

Storing Excess Power in Ice, Salt or Even … Caves?

     The ability to sell back power to a utility at retail rates (meaning the rates they charge the public) is dubbed “net metering,” and many states have limitations on what percentage of total baseload power on a grid a utility must buy back. It was broadly assumed net metering would go away in hurry when the Green Revolution came of age. Now, that appears unlikely. The alleged problems with absorbing intermittent green power point to a more fundamental issue with the existing power grid — namely, that the system isn’t really ready to handle a significantly more distributed power production footprint.

     One possible remedy would be for utilities to build more power storage systems, and many new forms for those are on the drawing boards. One solution could be massive battery installations from the likes of A123 Systems. Another could be a system such as that offered by Ice Energy, which uses cheap power at night to make ice, reducing the power requirements of air conditioning systems in the daytime. This effectively arbitrages the price differential between nighttime and daytime power generation — something that potentially could be a huge boon for wind power. Other, more exotic “battery” systems that have been proposed include storing power in molten salt or injecting compressed air into sealed caves, both of which create potential energy that can later be used to power electric generators.

     Power storage is already being recognized as essential to new renewable energy projects. A wind farm on Maui will be the first in the country to have an added power storage component in the form of a bank of lithium-ion batteries. But most green power developers are still having trouble competing with coal and natural gas fired plants on a level playing field — even without adding in the costs of power storage. If the issues of dealing with intermittent power sources are as disruptive to grid stability as some traditional utilities are claiming, the Green Revolution may be a case of “too much, too soon” — at least until the engineers can figure out better, cheaper ways to capture sunshine and wind in a bottle. 

From DailyFinance:


When It Comes to Energy, There’s No Free Ride

Sunday, March 28th, 2010

     Electric cars are a win-win proposition, right?  They’re the solution to many if not most of our vehicle emission problems, right?  They’re all good, whereas power derived from petroleum-based fuels is all bad, right?  Unfortunately, just as nothing in life is all good or all bad, so goes the reality behind electric cars.  Sure, they will most certainly reduce our reliance on foreign oil, which is a good thing, but they also come with some not-so-good things attached to them.

     Those of us who drive hybrids know that its battery must continually recharge.  It is able to do this through various means, many of which take their beginnings in the power that is derived from the fossil fuels that also run the car.

     So, too, will the batteries that charge electric cars eventually run down, and when they do, they must be plugged into a source of electrical energy to recharge.  So where does this electrical energy come from?  It comes from an electric utility grid, the same grid that provides powers to our homes and businesses.  And this is where the pretty picture converges upon some not so pretty elements, because the utility grid is largely fed by fossil fueled power plants that burn coal, natural gas, and, yes, even oil, the very thing we were trying to get away from when designing the concept for our electric cars.

     Presently, the US Department of Energy reports that 71.2 percent of our power is generated by burning fossil fuels, and ultimately this is what will be providing the power behind electric cars.  We all recognize the fact that the smoke that rises from the stacks of fossil fuel plants release pollutants into the environment, and we’re trying very earnestly to do something about that.  Would adding pollution control devices to them serve to curb their emissions?  Yes, but they would come at a high price as these devices are extremely expensive to build, operate, and maintain.  In fact, they are so expensive they would add a hefty price tag to our already high-priced electric utility bills.

     There’s got to be a better way to make the electricity to power a car, right?  What about using alternative energy sources?  We’ll explore these options next week.