When I started studying the question of how nuclear power’s expansion was likely to transpire, I, like many, took it as  a given that there would be a substantial global expansion of nuclear power plant construction. I expected the “renaissance” would include both growth in countries that have long had a near de facto moratorium on plant construction (e.g. the United States) as well as some of the more promising aspirant countries that have not previously had commercial nuclear power such as Indonesia and Turkey. While I never believed that most of the states clamoring for nuclear energy would achieve it in my lifetime, I did expect a significant swing. After all, with a price on carbon and renewables not ready to take a chunk out of king coal at an affordable cost, nuclear power seemed to stand to be a big winner from climate change.

Today I am far less sanguine about an expansion that could be reasonably be termed a “global renaissance of nuclear power”. Perhaps it can be said that Asia is experiencing a nuclear boom. 57%  of the plants currently under construction are being built in just five Asian countries (China [over 25% of the total alone], India, Japan, South Korea, and Taiwan), and if you add Russia you have accounted for almost 3/4ths of the current construction. However, beyond rhetoric and political attempts to signal support for nuclear energy, there is little evidence of a full-fledged renaissance yet. The graph below shows the number of power plants being brought on-line each year, and the number of countries in which plants were brought on-line.

Just recently, the US government has signalled support for nuclear. The EPA predicted 180 new plants constructed by 2050 as a result of climate change legislation in its recent analysis (see: http://www.examiner.com/x-19285-Chicago-Economic-Policy-Examiner~y2009m10d26-EPA-sees-180-new-nuclear-power-plants-over-the-horizon ). Furthermore, there is evidence that the Obama Administration is backing nuclear expansion as part of a bid to get the required legislative support for passing carbon-constraining legislation. (see: http://www.washingtonpost.com/wp-dyn/content/article/2009/10/27/AR2009102704081.html )

Should we expand nuclear power? I believe that, if we want to slow the pace of and eventually reduce carbon output, nuclear will have to be part of the solution. When you consider the scale on which we use electricity, wind, solar,  geothermal, and conservation in their current state of development don’t do the job . Hopefully, one day we will be able to cost-effectively tap the power of the sun for most of our electricity needs and will be vastly more efficient in our use of power, but that day isn’t today and by the time it arrives we may have suffered a dire price. 

It is essential to  understand the differences between nuclear power and renewables in terms of scale. Nuclear plants are typically both rated higher in terms of the amount of electricity they generate, and have much higher capacity factors than renewable plants. The capacity factor is a percentage of the rated power that a unit actually produces over the course of a year. For nuclear, capacity factors tend to be above 90% on average, and can be 100% in years in which fuel is not changed out and there are no other disruptions. For wind, a reasonable capacity factor is about 33%. This means that a typically sized nuclear plant (1000 MW(e)) produces more than 4000  wind turbines of 600 KW (e) or almost the same as 500 massive 5 MW(e) wind turbines. (These are at conservative capacity factors of 85% for nuclear and 35% for wind.)

So what is the tough nut to crack if the legislative environment is suitable for nuclear power’s growth? If one asks what policies need to be put into effect to spur US nuclear renaissance, one might quickly note that said policies are largely already in place, and still the evidence of a resurgence is primarily on paper.

First, you would need to provide loan guarantees. Why? Because private utilities don’t typically have enough assets to get people to loan them billions of dollars over a relatively short timeframe. It is not that these firms are small or not profitable, but rather that the magnitude of costs and risks for nuclear is so high. This is exacerbated by the many examples of planned plants that have not panned out. Famously, the Shoreham Nuclear Power Plant in Long Island, New York was completed but never made a return on investment. The operator eventually went out of business / was subsumed by a government entity. The Energy Policy Act of 2005 provides for a program that would reimburse lenders up to a cap in case of default. Current discussions are considering increasing the $18.5 billion pot for this program as that, sadly, is a scant amount on the scale of spurring a massive increase in nuclear power.

Second, while the nuclear power industry has had a quite respectable safety record, the scale of possible consequences and liabilities makes it impossible for utilities to afford the kind of insurance they would need to ensure they could stay in business in the aftermath of an accident. The government has the utilities covered on that front as well with the Price-Anderson Act that caps the liability of private firms so that they only have to insure up to a certain level.

Third, a major problem in nuclear power plant construction, much as in Defense Department acquisitions, is a proclivity towards cost-overruns and delays. One can imagine that stretching out the interest payments on an $8 billion dollar loan could be quite costly proposition.

It is useful to understand that nuclear plants are cost-intensive in front-loaded construction costs, but are relatively cheap in terms of fuel and operations and maintainance. This means that, once plants are built, they are relatively profitable when the utilities no longer have to funnel a big chunk of the money back into paying off the capital costs. I’ve heard an employee from Georgia Power say that nuclear was by far their least expensive power source, but this was, of course, based on the fact that the plant costs had depreciated off their books. The Federal government has provided delay insurance to cover delays that are due to the regulatory requirements (i.e. if the NRC puts a hold on you, the government picks up the tab) for a limited number of early plants. Furthermore, some jurisdictions (i.e. Georgia and Florida) have approved the extremely controversial practice of allowing their utilities to charge customers for plants before they are even running (for that matter, before construction has even begun.)

Despite all these policies, I remain skeptical that we will see a major nuclear power plant construction boom given the magnitude of costs and risks involved. This puts me at a loss. While I believe in the benefits of nuclear power, I am also quite concerned about our massive deficit, so I’m not too sure about the one policy prescription that remains available to jump start a renaissance. That is, if the government buys or substantially increases subsidization of nuclear power that may make a difference. Any such policy would have to ensure that taxpayers got their investment back in terms of a cut of the earlier mentioned profitability.