Showing posts with label greenhouse gases. Show all posts
Showing posts with label greenhouse gases. Show all posts

Monday, February 29, 2016

Combatting Air Pollution:

A Role for Nuclear Power

We have all gotten so caught up in the climate change discussion in recent years, that we have nearly forgotten that fossil fuel emissions have been an issue for a very long time.  We used to worry about air pollution.  A recent article noting that air pollution kills over 5 million people a year worldwide suggests we still should think about air pollution. 

It's not hard to guess why air pollution was pushed off our radar screens--it is generally a more localized phenomenon, so maybe you don't think about it if you live far from major cities or industrial centers.  And in some areas, a big contributor to air pollution is from automobiles, which perhaps diverts attention from the fossil fuel power plants.

So perhaps it seemed like climate change was a more universal issue.  But focusing just on climate change has led to debates about whether climate change is real.  And in some circles, focusing on climate change has diverted attention to discussions of ways to slow climate change by geoengineering schemes such as injecting aerosols into the upper atmosphere to reflect sunlight, or by sucking carbon dioxide from the atmosphere, or by adaptation strategies such as seawalls.

Of course, arguments can also be made that this or that portion of air pollution is due to other causes--transportation, the use of coal, wood and charcoal to cook and to heat homes in some countries, etc.

However, looking at the two issues together makes a compelling argument that fossil fuels are a key contributor to two very important environmental concerns--air pollution and greenhouse gas emissions.  Therefore, we should try to get away from the single argument about climate change, and instead address both air pollution and greenhouse gas emissions simultaneously.

In the long term, this means a number of things.  In the developing world, this means moving away from wood, charcoal and coal for home heating and cooking.  All over the world, it means turning to clean sources of electricity generation--nuclear power and renewable energy.  It also means moving away from the use of petroleum for transportation.  And that, in turn, may mean yet greater demands for electricity, and therefore, greater demands for electricity from nuclear power and other clean energy resources.

The bottom line is that, if we look at energy sources and effects holistically, the case for turning to clean energy sources becomes even stronger.  And the resulting growth in demand for these sources means that we will have to exploit all clean energy sources at our disposal. 

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Saturday, June 7, 2014

EPA's New Rule and Nuclear Power:

Another Renaissance?

It's been a big week.  In France, the world celebrated the 70th anniversary of the D-Day invasion.  I heard one report call it one of the most historic wars in the history of the world.  And in the U.S., the Environmental Protection Agency (EPA) released its new rules for the reduction of carbon dioxide emissions.

I am not particularly trying to draw any connections between the two events (although I am sure that some will say the EPA rules are an epic war on coal!).  I just mention this because, with D-Day being celebrated this week, it was a little hard for me to start by saying the biggest news was the EPA announcement.  It is the event of the day that is likely to have the most impact on the future, just as D-Day had a profound effect on the course of history in its time..  Well, I suppose there's my parallel.

To get serious, the pundits are now lining up to predict what effect the rules are going to have--on the coal industry, on renewables, on natural gas, and on nuclear power.  I personally think there is still a lot uncertainty about this whole initiative.  Will Congress find a way to undercut it?  Will there be legal challenges?  What will happen if the next Administration opposes it?

And even if it succeeds, it pointedly does not spell out a single, uniform solution.  It does not follow the path of some states have adopted in the past by mandating a percentage of renewables (or any other energy source).  It merely spells out the carbon dioxide reduction goals and identifies several possible approaches to reaching those goals.

In that sense, it doesn't mandate--or handicap--either renewable energy sources or nuclear power.  This looks like it should be a good thing for nuclear power.  We have just been going through a bleak period where we have seen some plant closures spurred by a flawed marketplace, and have heard warnings that there could be more such closures.  There have been calls to fix that marketplace.  This EPA rule doesn't directly do that, but it may create incentives to modify the marketplace rules in order to create a more level playing field for all clean energy sources. 

At a minimum, it should help halt the premature closures of the current fleet of nuclear power plants.  The longer-term impacts are more difficult to project.  It should encourage the completion of the current nuclear power plant construction projects, and it may revive some that are on the books that have stalled in recent years.  It could even spur the initiation of some new projects, although that is less certain.  It will probably give at least some encouragement to advanced reactor development plans.  However, realistically, the goals in the EPA plan are relatively short term, so designs that are not yet ready for prime time may not help meet the goals.

On the other hand, one prominent point that has been made about the EPA goals is that they still fall short of US commitments to the global community for greenhouse gas reductions, specifically, the broader targets of the 2009 United National Copenhagen Accord.  Therefore, if this is viewed as a first step, and if even more stringent goals are expected to follow, the incentive to develop new designs could be very strong.

As is often the case with government rules and regulations, the landscape is very complex.  There are a lot of interacting factors.  There are a lot of special interests who are going to weigh in heavily on this.  We already see the coal lobby lining up.  And although this rule is very favorable for renewable energy, we already see complaints that it has the fingerprints of the nuclear lobby on it.

Realistically, the most reliable predictions are the nearest-term ones, and the primary near-term prediction for nuclear power is that the rule will help stave off the threat of closures of operating plants.  This rule has the potential to set the stage for longer-term R&D as well--for a variety of energy sources, including clean coal, renewables, and advanced nuclear power.  But a lot of things have to happen before we are sure of just how much this rule may help longer-term projects.  It is a bit too early to break out the champagne.  But perhaps we can put it in the frig to chill.

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