Posted by Rich Sweeney on March 19, 2008
Today’s NYTimes has a piece on an interesting new paper from Carey W. King and Michael E. Webber of UT Austin. The authors point out that converting our auto fleet from gasoline power to electric power would put substantial strain on our nation’s water resources. Water is used to both mine and process fuels and to cool power plants during the generation process. The study estimates that “For every mile driven by a gas-powered vehicle that is displaced by one driven by an electric vehicle, about three times as much water is consumed (that is, lost to evaporation) and about 17 times as much is withdrawn (used and returned to its source).” However, far from arguing against PHEVs, the authors lay out a series of steps that policymakers should begin taking now in order to prepare for the shift to plug-ins.
Though the paper doesn’t mention how climate change will affect things, it seems obvious to me that things could get even worse. Hotter temperatures mean more cooling for generators, and warmer water to cool with. Several nuclear plants were shut down during the droughts in the southeast last year. The NYTimes also had a long much talked about article on how climate change could affect water supplies.
Finally, the authors do point out that renewable resources like wind and solar use no water, which is yet another reason why we should encourage their development.
Posted in Auto, Electricity, Water Resources | No Comments »
Posted by Evan Herrnstadt on November 12, 2007
“The amount of water needed to grow the corn, process the fuel and dispose of the waste at a small ethanol plant is about equal to the water needs of a town of about 10,000, according to an Environmental Defense Fund report.”
–Wall Street Journal (subscription req’d, sorry)
Posted in Biofuels, Water Resources | No Comments »
Posted by Rich Sweeney on November 6, 2007
Much has been written of late about the Law of the Sea Treaty (MR, CS Monitor, Matthew Yglesias, NYTimes). These commentaries have tended to focus on the potential navigational and natural resource discovery implications, which are probably the main issues of contention. The New Yorker, however, ran an odd but fascinating piece on a different sort of conflict that has resulted from the current suboptimal governance of our planet’s waters: the rise of vigilante environmental pirates.
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Posted in Government Policy, International, Public Goods, Water Resources | 1 Comment »
Posted by Rich Sweeney on October 23, 2007
In the world of hydroelectric power, “spillover” is a term used to describe water that flows over or around a dam, as opposed to through the turbines. More commonly, of course, “spillover” is a term used by many to describe a side effect or unanticipated consequence. This weekend the New York Times published a very long but very good piece on how global warming could significantly impact the United States’ fresh water supplies. While the article was focussed primarily on the consumptive water demands of the nation, it’s also clear that one of the spillover effects of a warmer world could be an end to the phenomenon of spillover at dams across the country.
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Posted in Climate Change, Electricity, Water Resources | 1 Comment »
Posted by Daniel Hall on September 25, 2007
A California town is trying to clean up the water at Rincon Point, out near my old graduate school stomping grounds. What I found interesting about the article was the implied recreational value — and elasticity of demand — among surfers for use of one of the best point breaks in the country:
In Southern California, it is common practice for people to stay out of the water for days after rain because of runoff pollution. But surfers often opt to take their chances in places like Rincon Point and Malibu, which has problems similar to Rincon Point’s. …
Wayne Babcock, a cofounder of Clean Up Rincon Effluent, said that the beach at Rincon Point was “notorious” for making surfers sick and that the homeowners should be forced to stop using septic tanks. When asked why they continue surfing here, Mr. Babcock and other surfers waxed poetic. “You don’t have a choice,” Mr. Babcock said. “It’s Rincon. There’s nothing like it.”
“You don’t have a choice.” I never really was able to get into surfing, but this sounds like a pretty high use value to me. Of course, given the median income of the surfers I knew, it is perhaps reasonable to question an effectively infinite stated use value.
Posted in Pollution, Water Resources | No Comments »