Showing posts with label nuclear power. Show all posts
Showing posts with label nuclear power. Show all posts

Wednesday, October 29, 2008

Election 2008: Non-Renewable Energy

Non-Renewable Energy Policy

It’s usually easy to identify the candidate who has sounder environmental policy, scroll to the Democratic ticket row of your voting machine, and pull the lever. But not this year. It’s a crazy political year, I daresay. Red is blue, blue is red and up is down. The Republicans have nominated a senator who proposed the first legislation to fight global warming and the Democrats have nominated a senator who has made his support of coal and nuclear power a major portion of his energy bill. In my opinion neither candidate would be an environmental disaster, which is a stark change from the past few elections. Both candidates have good environmental records, and we owe it to them to consider their policy in detail. With that in mind, let’s take a close look at the candidates environmental policy on Non-Renewable Energy. I think there are a lot of things we could talk about, but in the interest of time we’re going to focus on coal burning, nuclear energy and off-shore drilling.

I’ve already talked about the difference between alternative and renewable fuels, but here is how we define a renewable fuel.


A renewable energy source is one that the fuel or energy source is rejuvenated quicker by natural processes than we consume the fuel.


As such all fossil fuels (oil, natural gas and coal) are non-renewable. As is nuclear power, as the fuel (uranium or plutonium) does not regenerate.

Coal Burning


The positions: Both candidates support additional development of coal fueled energy.

McCain: McCain says:


John McCain Will Commit $2 Billion Annually To Advancing Clean Coal Technologies. Coal produces the majority of our electricity today. Some believe that marketing viable clean coal technologies could be over 15 years away. John McCain believes that this is too long to wait, and we need to commit significant federal resources to the science, research and development that advance this critical technology. Once commercialized, the U.S. can then export these technologies to countries like China that are committed to using their coal - creating new American jobs and allowing the U.S. to play a greater role in the international green economy.


The McCain-Palin website mistakenly identifies coal use as a both “clean” and an “alternative” energy source. Coal energy is neither clean nor it is an alternative energy source as it is a fossil fuel.

McCain has expressed steady support for coal technology through the years. This position is fairly popular with the large American oil companies, who have strongly supported McCain this election cycle. If McCain wins the election there is no doubt that coal energy will be a major point in his energy policy.

It is unclear from his policy point if this coal energy development would be subject to McCain’s proposed market driven cap-and-trade system for carbon credits (we will discuss this in the future).

Obama:


Whereas McCain professes unwavering support of coal energy, Obama appears to be tying his support of coal into the development and deployment of clean coal technology. Coal use would also be subject to regulation from the carbon permit trading program.

Obama appears particularly interested in developing technologies that convert coal to oil or gas. This application is also strongly supported by the U.S. military.

The case for coal:
Abundance. Both candidates favor “clean coal technology” as a major part of their energy plan. A major reason for such thinking is our abundant energy reserves of coal could make coal an excellent way to achieve energy independence. At our current consumption rates, it is estimated that we have well over 100 years of coal reserves in North America, as opposed to about 15 years of oil and 50 years of natural gas.

Infrastructure. We have the infrastructure in place to utilize our coal reserves. There are many, many coal burning power plants (especially east of the Mississippi). No federal funds would be required to continue using coal, and industry has plenty of economic incentive to invest in additional coal plants because the energy is so cheap.

It’s cheap. Because it’s so abundant and we have the infrastructure in place, coal energy will produce cheap energy, which is a very important factor given today’s economy.

Swing States. The table below shows that a number of the major coal producing states are considered in play by both candidates. By my estimation West Virginia (#2), Pennsylvania (#4), Montana (#5), Colorado (#7), Indiana (#8) and North Dakota (#10) are all being actively campaigned in by both sides, and all of these states are major coal producers.

Table. Coal production by state in 2007. Coal production in thousands of short tons. Data taken from the Department of Energy. States of interest highlighted in red.



Home State Influence. Senators Biden and Obama (IL - #9) both come from states where coal is an important industry, and thus are under tremendous pressure to support it in the senate. (Little known fact, Joe Biden grew up in Scranton, PA., they really should talk about that more.) Senator McCain represents Arizona which is the #18 coal producing state, and Governor Palin hails from Alaska which is then #22 coal producing state.

The Case Against Coal:
Coal is filthy. Coal is the dirtiest form of energy available to man for consumption. Burning coal produces ash (particulate matter) which possess a major threat to human health. Burning coal produces air born mercury, which is highly toxic and accumulates in fish before humans consume it. Burning coal produces loads of sulfur dioxide, which in the presence of water vapor in the atmosphere produces acid rain. Burning coal produces nitrogen dioxide, which contributes greatly to ozone formation, which is a major air pollutant.

Coal mining is environmentally unsound. The process by which coal is removed from the Earth is terribly dangerous to coal mine workers. The process by which coal is removed from the Earth is incredibly environmentally destructive to the mountains from which it is removed, often as a product of strip mining, which can lead to acid mine drainage into local waterways.

Clean Coal Technology. First of a definition. Clean coal technology is any technology that reduces the quantity of pollution produced from coal burning. The most common form of "clean" coal technology is scrubbers, which remove fly ash from coal plants. Clean coal technology isn’t actually clean. Today, clean coal technology reduces the amount of fly ash (and other particulate), mercury (and other toxic metals), and to a lesser extent reduces the amount of sulfur dioxide (leads to acid rain) and nitrogen oxides (leads to ozone formation) produced from coal burning. However, today these “clean” coal technologies do not remove these pollutants from the emission process, just reduce them. Most of the time, even with “clean” coal technology coal burning plants still produce tremendous quantities of air pollutants, greatly exceeding that produced from natural gas.

Greenhouse Gasses. Coal burning produces prodigious quantities of carbon dioxide. As such coal burning is a major contributor to global warming, increasing especially quickly in China. Both McCain and Obama support investing in carbon sequestration, a process by which carbon dioxide is removed from the coal driven pollution, and returned to the ground. These technology has not yet been produced, and the environmental impacts of the sequestration is poorly known.

Portability. Coal burning produces energy for electricity, but is not used to produce fuels for transportation so it’s utility is somewhat limited at the current time.

Conclusion. I support neither candidates platform on this issue as both candidates support this environmentally unfriendly process. Obama attaches more conditions to the development of this energy source, but both would feature clean coal technology in their energy plan.

Nuclear Energy


The positions: Both candidates support additional development of nuclear energy.
Obama:




Obama supports development of nuclear power, but only after we have developed a system for handing the waste process. This position puts Obama at odds with his more liberal supporters, who in general strongly oppose the development of nuclear energy. He opposes the use of Yucca Mountain in Nevada as a repository.

Illinois is home to many nuclear reactors, six plants with a total of 11 reactors. This no doubt impacts Senator Obama’s position on the issue.

McCain:

John McCain Will Put His Administration On Track To Construct 45 New Nuclear Power Plants By 2030 With The Ultimate Goal Of Eventually Constructing 100 New Plants. Nuclear power is a proven, zero-emission source of energy, and it is time we recommit to advancing our use of nuclear power. Currently, nuclear power produces 20% of our power, but the U.S. has not started construction on a new nuclear power plant in over 30 years. China, India and Russia have goals of building a combined total of over 100 new plants and we should be able to do the same. It is also critical that the U.S. be able to build the components for these plants and reactors within our country so that we are not dependent on foreign suppliers with long wait times to move forward with our nuclear plans.


McCain expresses unwavering support for nuclear energy. He proposes constructing 45 new nuclear plants by 2030. This number is thought by engineers to be unreasonable, as there are no industrial facilities in the United States presently capable of constructing commercial nuclear power facilities. Also, at present the United States does not have sufficient nuclear engineers needed to run 45 additional nuclear power plants. Senator McCain supports use of Yucca Mountain in Nevada as a repository of spent fuel.

Arizona is home to a nuclear plant, with three reactors. Arizona has a large portion of our nation’s uranium ore. Development of nuclear power would likely provide a boost to the Arizona economy.

The Case for Nuclear:
The Only Alternative. Nuclear power at the present time represents the only alternative fuel capable of meeting America’s electric power consumption at the present time. It may be a viable short term solution between now, and when alternative, renewable energy sources (i.e. wind, solar, tides, geothermal…) are available and technically feasible.

It’s safer. Technological developments have made nuclear energy safer than ever. Reactors used at Chernobyl or Three Mile Island are now obsolete and have been replaced with much safer designs.

The Case Against Nuclear Energy:
Cost. Nuclear energy is significantly more expensive than energy produced from fossil fuels, and even some alternatives.

NIMBY. Not in my backyard. It is very difficult to find a location for a nuclear power plant, since no communities want to take on the risk of nuclear incidence.

Nuclear Waste. Upon use, nuclear fuel produces a radioactive waste stream. At the current time, the United States has no central location to handle nuclear waste. Instead it is stored at the site of the nuclear power plant. This represents a security and health risk. It would be advisable to store all nuclear waste in a central location that could be monitored, and the nuclear waste health impacts limited to a small location.

Lacking Infrastructure. When fuel is used in a nuclear power plant, a percentage of the fuel that is produced as waste is recoverable and could be used as reprocessed fuel in the future. At present, this excess fuel is dumped in with the waste fuel and not recovered. The United States needs to develop a central re-processing plan to handle this nuclear fuel, and recover as much usable fuel as possible, if we are to develop nuclear energy on a federal level.

Transport of Waste. Even if the United States develops a central repository and reprocessing center, many states have regulations forbidding the transportation of nuclear waste through their borders. A safe transportation system would have to be developed.

Nuclear Proliferation. Even though the threat of global nuclear winter has been reduced, regional nuclear wars are still possible (i.e. India-Pakistan). Increasing the number of nuclear plants increases our countries ability to produces new nuclear weapons, which may be an obstacle to the bi-lateral weapon reduction program we are entered in with Russia.

Yucca Mountain. The United States has spent a tremendous amount of money developing Yucca Mountain as a nuclear waste repository. There is some debate as to whether or not Yucca Mountain is a safe place to store nuclear waste, due to the possibilities of earthquakes in the region.

Conclusion: Despite the risk, I am personally strongly in favor of additional utilization of nuclear energy. I realize this is not the popular environmental sentiment, but I believe the risk can be minimized, and positive from the reduction in greenhouse gasses outweighs the negative. Both candidates agree with my position. I prefer Senator Obama’s proposal because it includes a comprehensive discussion of the need to develop a repository and reprocessing plant, which would be vital if our nation moves in that direction.

Off Shore Drilling


The positions: Unlike the previous two energy possibilities, the two candidates differ strongly on this issue. Senator McCain has expressed strong support for off-shore drilling. Senator Obama has tepid support for it, and appears to intend to use it as leverage to get his energy legislation advanced.

McCain: “Drill, baby, drill.”


John McCain Will Commit Our Country To Expanding Domestic Oil Exploration. The current federal moratorium on drilling in the Outer Continental Shelf stands in the way of energy exploration and production. John McCain believes it is time for the federal government to lift these restrictions and to put our own reserves to use. There is no easier or more direct way to prove to the world that we will no longer be subject to the whims of others than to expand our production capabilities. We have trillions of dollars worth of oil and gas reserves in the U.S. at a time we are exporting hundreds of billions of dollars a year overseas to buy energy. This is the largest transfer of wealth in the history of mankind. We should keep more of our dollars here in the U.S., lessen our foreign dependency, increase our domestic supplies, and reduce our trade deficit - 41% of which is due to oil imports. John McCain proposes to cooperate with the states and the Department of Defense in the decisions to develop these resources.


Senator McCain strongly supports the exploitation of marine resources for the production of domestic oil. This is in strong contrast to his senatorial voting record where he has voted against his party on the exploitation of ANWAR.

Governor Palin is in strong favor of development of oil reserves off-shore and in Alaska.

Obama:


Obama appears to be pandering to public support of offshore oil development. His written policy supports development of these oil reserves in a limited capacity and only as part of a larger energy plan that includes alternative fuels.

Both Senator Obama and Senator Biden have voted against drilling in ANWAR.

The Case for Offshore Drilling:
None. There is no good reason to increase offshore drilling.

The Case Against for Offshore Drilling:
It won’t help soon. Oil from offshore drilling won’t arrive for 7 to 10 years, and will represent only a fraction of our oil consumption.

It won’t appreciably reduce the cost of fuel. The economic impacts of this additional oil income would be on the order of cents per gallon of gasoline.

False promises. A number of proponents of offshore drilling are suggesting that there is more oil present than what government studies performed in the 1970’s estimated was present. Likely the amount of oil reserves lies somewhere in between the two ranges of numbers.

The figure below shows proven oil reserves off the coast. The additional oil that will be tapped is a very small fraction of that which we are already drilling for. It would represent a drop in the bucket. The data for this figure is from the Department of the Interior, but I'm not sure exactly where this figure is taken. Please advise if you know the proper citation.



Addition Feeding. The U.S. reserves represent somewhere between 2% and 3% of the worlds oil supply. We consume 25% of the world’s oil use. Spending federal money to develop these supply only feeds our addiction, and will prolong our use of petroleum. We will not move towards producing alternative energies. This will prolong our addition to foreign oil, not sever it.

Environmental Impacts. Governor Palin’s famous quote about offshore oil drilling been clean and safe is untrue and unfounded. During both Hurricane Ike and Katrina large quantities of oil were released, entering the marine environment, causing extensive damage.

Conclusion: Neither candidate professes an environmentally friendly perspective on offshore oil development. Senator McCain’s policy represents a much greater threat to the environment than Senator Obama’s policy, however neither is ideal.

Tomorrow, we will move onto the candidates positions on alternative energies.

Friday, August 22, 2008

Alternative and Renewable Energies


Back at blogcentral today, working very hard on producing some utterly useless data (shown above). So far the past two days, 14 hours in the lab, zero chucks of useful data. I am told this is how the isotope cookie crumbles on a daily basis, so I had better get used to it.

Anyway, I wanted to discuss what exactly “alternative energy” and “renewable energy” means because I think the media often muddles the two expressions, and the definition is lost in the resulting fracas.


An alternative energy source is one that comes from a non-fossil fuel source.



A renewable energy source is one that the fuel or energy source is rejuvenated quicker by natural processes than we consume the fuel.


Let’s look at a few examples of energy sources and try to categorize them in terms of the definitions above.

Coal


Alternative: Coal is not an alternative fuel, as it is a fossil fuel.
Renewable: Coal is not renewable. Even though it is slowly regenerated, it is produced on a timescale much slower than we consume it.
Environmental Impact: Coal burning is a leading cause of emission of carbon dioxide, sulphur dioxide, and nitrogen bearing compounds to the atmosphere. The process of mining coal is also quite damaging to the environment, and generally to human health.

Natural Gas and Oil


Alternative: Natural gas and oil are not an alternative fuels, as they are fossil fuel.
Renewable: Natural gas and oil are not renewable.
Environmental Impact: Natural gas burning and oil consumption are the leading cause of emission of carbon dioxide to the atmosphere. Burning of natural gas and oil produces also generally produces volatile organic compounds and releases nitrogen oxides to the atmosphere. The process of extraction is damaging to the environment, and is expected to become moreso when we extracting oil shale and tar for oil.

Nuclear Energy


Alternative: Nuclear energy is an alternative fuel since it does not consume fossil fuels.
Renewable: Nuclear energy is not renewable. Uranium and plutonium ore are a limited resource.
Environmental Impact: Nuclear waste is an obvious concern. Retrieval of uranium and plutonium for refinement by means of strip mining can be quite damaging to the environment. Accidental releases, contrary to public opinion, from nuclear power plants are not a legitimate concern given significant advances in nuclear technology over the past 30 to 40 years.

Biofuels


Alternative: Biofuels are alternative fuels as they are not fossil fuel derived. Ethanol produced from corn should be considered a fossil fuel as significant quantities of fossil fuels are required to produce it.
Renewable: The major draw of biofuels is that is renewable. To be truly renewable in the long run, sustainable farming practices must be developed.
Environmental Impact: Varies strongly from biofuel to biofuel. Biofuels include wood, ethanol from corn or sugarcane, manure and vegetable oils. Some are relatively low impact, others like corn based ethanol are environmentally irresponsible and cause significant harm.

Solar


Alternative: Yes. Solar power is an alternative to fossil fuel.
Renewable: Yes. So long as there is a sun, we have solar power available.
Environmental Impact: The major challenge with solar power is improving the technology of converting sunlight to useable energy. Short of conversion of natural terrain to solar farms, the impacts of solar technology on the environment is minimal.

Hydro-Electric


Alternative: Yes. Hydro-electric is an alternative to fossil fuel.
Renewable: Yes. So long as there is a rain and the tides, hydro-electric power available.
Environmental Impact: Varies from application to application. The use of hydro-electric dams can impact rivers and lakes. The use of tidal dams or tidal turbines is somewhat less damaging.

Wind


Alternative: Yes. Wind is an alternative to fossil fuel.
Renewable: Yes. So long as there is a sun creating heating thermal imbalances on the Earth, we have wind power available.
Environmental Impact: Wind power is the most promising alternative energy source because wind is abundant and cheap. The challenge is placing wind turbines in the appropriate location. Chris J brought up some interesting thoughts regarding the viability of wind turbines in an urban environment that I will address in a future post.

Hopefully that clears up the difference between an alternative energy source and a renewable energy source. Next time we’ll pick up with alternative energy production in urban in the New York environment. We’ll try to tackle the question, what are the challenges and opportunities associated with each type of energy?