Archive for the ‘Energy’ Category.

Light Rail and CO2

The other day, I posted an update to my light rail bet saying that not only was light rail incredibly expensive for the amount of transportation it provides, it is not even clear that it provides any "green" benefits  (with "green" today meaning only the potential to reduce CO2, since the global warming hysteria has sucked all of the oxygen out of other environmental goals).

The Antiplanner has more information, this time from the transportation planners in Denver.  Normally, transportation planners grossly exaggerate the benefits of their proposed systems, so it is interesting that even they so no net CO2 savings from their proposed rail lines:

The Antiplanner's review
of rail transit and greenhouse gases found that Denver's light-rail
lines produce more greenhouse gases per passenger mile than a typical
SUV. The Gold Line DEIS agrees, admitting that the rail alternative
will result in a regional CO2 increase of 0.034% (see page 3.7-10).

By the way, the Denver system does not do so great on the financial part either:

Now, RTD says the line will cost more than $600 million, which is a
lot for a mere 11 route miles. Moreover, RTD has changed the proposed
technology to something it calls "electric multiple-unit commuter
rail," which sounds something like the Chicago Electroliners or some of
the Philadelphia commuter trains.

For this high price, the DEIS reports incredibly trivial benefits.
The proposed rail line is projected to take 0.0085 percent of cars off
the road. Of course, that's for the region as a whole, but in the
corridor it will take a whopping 0.227 percent of cars off the road. A
handful of buses could do as well.

While that might seem terrible, it actually outdistances our guys here in Phoenix, who are projecting that the next 3.2 mile line here will cost $306 million.  While the Denver line is projected to cost $10,300 per foot, the Phoenix line will cost at least $18,000 per foot.

Update on My Light Rail Bet: The Energy Issue

I generally have a bet I make for new light (and heavy) commuter rail systems.  I bet that for the amount the system cost to build, every single daily rider could have instead been given a Prius to drive for the same money; and, with the operating losses and/or subsidy the system requires each year, every one of those Prius drivers could be given enough gas to make their daily commute.  And still have money left over.  I have tested this bet for the systems in Los Angeles and Albuquerque.

Well, it turns out I left something out.  Many people are interested in commuter rail because it is perceived to be greener, which nowadays generally means narrowly that it uses less energy and thus produces less CO2.  But in fact, it may not.  Blogger John Moore sent me a link to this article by Brad Templeton analyzing energy usage in various transportation modes.  While a full train can be fairly efficient (just as a full SUV could be if 7 passengers were in it), cars and trains and busses are seldom full.  When you look at their average load factors, trains are seldom better than cars:
Transenergy

In fact, a car at its average load factor (1.57 pax) has about the same energy use as busses or light rail per passenger mile.  The analysis is difficult to do well, but even with errors, its clear that rail projects do not dominate over car travel in terms of energy use  (One must be careful to differentiate rail project construction decisions from individual choice of mode decisions -- an individual at the margin shifting from car to train saves a lot of energy;  a city choosing to invest in a large new rail system to entice drivers off the road does not).

In fact, relevent to my bet, Mr. Templeton says this:

My first conclusion is that we would get more efficient by pushing
small, fuel efficient vehicles instead of pushing transit, and at
a lower cost.

He explains his results, which are counter-intuitive to many

A full bus or trainload of people is more efficient than private cars,
sometimes quite a bit more so.   But transit systems never consist
of nothing but full vehicles.   They run most of their day with light
loads.  The above calculations came from figures citing the
average city bus holding 9 passengers, and the average train (light
or heavy) holds 22.   If that seems low, remember that every packed
train at rush hour tends to mean a near empty train returning down
the track.

Transit vehicles also tend to stop and start a lot, which eats
a lot of energy, even with regenerative braking.   And most
transit vehicles are just plain heavy, and not very aerodynamic.
Indeed, you'll see tables in the DoE reports that show that over the past 30 years,
private cars have gotten 30% more efficient, while buses have
gotten 60% less efficient and trains about 25% worse.   The
market and government regulations have driven efforts to make cars
more efficient, while transit vehicles have actually worsened.

In order to get people to ride transit, you must offer frequent
service, all day long.  They want to know they have the freedom to leave at
different times.  But that means emptier vehicles outside of
rush hour.   You've all seen those huge empty vehicles go by, you just
haven't thought of how anti-green they were.    It would be better
if off-hours transit was done by much smaller vehicles, but that
implies too much capital cost -- no transit agency will buy enough
equipment for peak times and then buy a second set of equipment for
light demand periods.

A lot of his data can be checked at the US Department of Energy data book here.  In particular, you can see the key numbers in table 2.12.  After perusing this data for a bit, I had a few other reactions:

  • Commercial air travel gets a bad rap.  On a passenger mile basis, it is really not worse than driving and only about 20% worse than Amtrack  (and probably the same as Amtrak or better if you leave out the Northeast Corridor). (table 2.14)
  • Busses have really gotten way more inefficient over the years, at the same time cars have become substantially more efficient.  While the government criticizes its citizens for not practicing enough energy conservation, in fact its citizens have been buying more and more fuel efficient vehicles while the government has been buying less efficient vehicles.  (table 2.13)
  • While passenger cars have increased substantially in efficiency, over the road trucks have seen no progress, and have actually gotten less efficient over the last 10 years (table 2-18)

Make sure to read the whole article.  I think the author is pretty fair at achnowleging where the uncertainties are in the analysis.  He also has comparisons of mass transit energy numbers between cities.  A few individual cities seem to beat even the most efficient cars -- most, including places like New York, do not.

Postscript:  I don't think numbers for New York include taxis.  If they did, New York would likely look terrible.  From an energy standpoint, taxis are a horrible transportation option, perhaps the worst possible.  It would be interesting to know how many New Yorkers who look down on SUV's routinely get around town using taxis.

Solar Concentrating Plants

For a while, I have been writing that traditional silicon/germanium based solar-electric panels are not yet economic as an electricity source.

I have hopes for other technologies eventually making direct solar conversion to electricity.  However, there seems to be some activity in solar concentrating plants, where solar energy is reflected onto tubes to boil water and drive traditional steam turbines to generate electricity.  Fortune has an article on one such plant opening recently:

The completed solar arrays will be trucked to California where Ausra
is building a 177-megawatt solar power station for utility PG&E (PCG)  on 640 acres of agricultural land in San Luis Obispo County. (To see a video of the robots in action, click here.)
The arrays focus sunlight on water-filled tubes to create steam to
drive a turbine. Ausra manufacturing exec David McKay points to where
standard-issue boiler pipe will be fed into a machine and treated with
a proprietary coating that transforms it into a solar receiver.

I would love for this to work, but the article goes on to say that this approach still requires federal tax subsidies to compete with other electricity sources.  I am not very familiar with the economics of such plants.  Does anyone have a link or source that delves into the economics.  I am increasingly frustrated of late with alternate energy articles that fail to give any of the relevent economic info.  For example, I read an article in the Arizona Republic (sorry, lost the link) about Arizona's first wind project, but I could not get a sense from the article if the power was being purchased at market rates or some special inflated rate.

Duh

From the Interagency Task Force on Commodity Markets, via Mark Perry:

The Task
Force's preliminary assessment is that current oil prices and the
increase in oil prices between January 2003 and June 2008 are largely
due to fundamental supply and demand factors. During this same period,
activity on the crude oil futures market "“ as measured by the number of
contracts outstanding, trading activity, and the number of traders "“
has increased significantly. While these increases broadly coincided
with the run-up in crude oil prices, the Task Force's preliminary
analysis to date does not support the proposition that speculative
activity has systematically driven changes in oil prices.

The
world economy has expanded at its fastest pace in decades, and that
strong growth has translated into substantial increases in the demand
for oil, particularly from emerging market countries. On the supply
side, the production of oil has responded sluggishly, compounded by
production shortfalls associated with geopolitical unrest in countries
with large oil reserves. As it is very difficult to rely on substitutes
for oil in the short term, very large price increases have occurred as
the market balances supply and demand (see top two charts above).

If
a group of market participants has systematically driven prices,
detailed daily position data should show that that group's position
changes preceded price changes. The Task Force's preliminary analysis,
based on the evidence available to date, suggests that changes in
futures market participation by speculators have not systematically
preceded price changes. On the contrary, most speculative traders
typically alter their positions following price changes, suggesting
that they are responding to new information "“ just as one would expect
in an efficiently operating market.

Congress and other agencies have commissioned studies of this type on oil markets and prices approximately every 90 days or so for the last 35 years, and every one of them have come to the same conclusion:  Oil markets move based on the participant's best guesses about trends in supply and demand.  Duh.  As I wrote previously, the last hydrocarbon price manipulation case I have seen in court was aimed at a group that allegedly manipulated prices for 30 seconds at the end of a trading day whose closing price affected certain contracts.  And it is not clear that they were successful. 

I Would LOve to See This Happen

San Francisco has a ballot initiative this November to seize all PG&E transmission lines and assets in the city such that all city power comes from a new government owned utility.  Further, the initiative would require that this new entity get 100% of its power from renewables, particularly wind and solar, by 2040.  It is similar to a 2001 initiative.

All due respect to PG&E's private property, but I would love to see this happen.  If I were governor, I would be seriously tempted to encourage them to proceed, with the only proviso that no one else in California be allowed to sell electricity to San Francisco on the hugely unlikely possibility that there might be a day without sunshine in San Francisco.   (I find it hilarious that San Francisco's solar future is trumpeted in the "fog city journal.")  This might actually be a big enough disaster that even the media would have trouble ignoring its spectacular failure.  It would also do wonders for the Arizona and Nevada economy, as major industries would move our way.

I am sure San Francisco is well on their way to success.  After all, the city just completed its largest ever solar project

            The solar system is expected to generate 370,000 kilowatt hours of
electricity annually, enough to power 80 San Francisco homes.

Wow.  It can power 80 whole homes, as long as its not night time or winter (when it is seldom sunny in SF).

More on Wind Capacity

The other day I wrote to beware of rated capacity for wind and solar, because such plants tend to run way below their rated capacity on a 24-hour average.  MaxedOutMamma reads the wind report of the largest utility in Germany, which is as a country is among the largest adopters of wind power.  She finds this interesting bit:

As
wind power capacity rises, the lower availability of the wind farms
determines the reliability of the system as a whole to an ever
increasing extent. Consequently the greater reliability of traditional
power stations becomes increasingly eclipsed.

As
a result, the relative contribution of wind power to the guaranteed
capacity of our supply system up to the year 2020 will fall
continuously to around 4% (FIGURE 7). In concrete terms, this means
that in 2020, with a forecast wind power capacity of over 48,000MW
(Source: dena grid study), 2,000MW of traditional power production can
be replaced by these wind farms.

This is an even lower substitution factor than I mentioned previously, and is so because this report looks not just at the percent of time wind is blowing at full speed, but also at the peak load conventional power plants that must be kept running on standby due to the unreliability of wind.  At this 24:1 substitution ratio, folks like Al Gore and Boone Pickens will bankrupt us.  But of course, their investment portfolios, laden with alt-energy investments, will be paying off.


Twisted Into Pretzels

A few weeks ago, Kevin Drum had a post on shale oil development, quoting from a speech by Congressman Ken Salazar.  It is hard to really excerpt the piece well, but my take on their argument against shale oil leasing is:

  • Shale oil technology is unproven
  • The government is leasing the shale oil rights too cheap
  • There is already plenty of shale oil land for development, so new leases won't increase development
  • This is just being done by the Bush Administration to enrich the oil companies
  • The administration is rushing so fast that Congress has not had the chance to put a regulatory regime in place

In many ways, the arguments are surprisingly similar to those against new offshore and Alaskan oil leasing.  Through it all, there is this sort of cognitive dissonance where half the arguments are that the oil won't be developed, and the other half seem to be based on an assumption that a lot of oil will be developed.  For example, how can the leases be "a fire sale" if shale oil technology is unproven and development is not likely to occur?  I would say that if these assumptions were true, then any money the government gets for a worthless lease is found money. 

Similarly, how are oil companies going to enrich themselves by paying for leases if the technology is not going to work and no development is going to occur?  This same bizarre argument became Nancy Pelosi's talking point on offshore oil leasing, by saying that oil companies were somehow already cheating us by not drilling in leases they already have.  Only the most twisted of logic could somehow come to the conclusion that oil companies were enriching themselves by paying for leases were they found no developable oil.

From the standpoint of Democratic Party goals, there is absolutely nothing bad that happens if the government leases land for oil shale or oil drilling and oil companies are unable to develop these leases  (there is some small danger of royalty loss if leases are not developed when they could be economically, but most private royalty agreements are written with sunset periods giving the lease-holder a fixed amount of time to develop the lease or lose it -- I don't know how the government does it).  The net result of "no drilling" or "oil shale technology turns out not to work" is that the government gets money for nothing. 

Here is the problem that smart Democrats like Drum face, and the reason behind this confusing logic:  They have adopted environmental goals, particularly the drastic reduction of CO2 in relatively short time frames, that they KNOW, like they know the sun rises in the east, will require fuel and energy prices substantially higher than they are today.  They know these goals require substantially increased pain and lifestyle dislocation from consumers who are already fed up with fuel-cost-related pain.  This is not because the Democrats are necessarily cruel, but because they are making the [faulty] assumption that the pain and dislocation some day from CO2-driven global warming outweighs the pain from higher priced, scarcer energy.

So, knowing that their policy goal is to have less oil at higher prices, and knowing that the average consumer would castrate them for espousing such a goal, smart Democrats like Drum find themselves twisted into pretzels when they oppose oil development.  They end up opposing oil development projects because in their hearts they want less oil around at higher prices, but (at least until their guy gets elected in November) they justify it with this bizarre logic that they oppose the plan because it would not get us oil fast enough.  The same folks who have criticized capitalism for years for being too short-term focused are now opposing plans that don't have a payoff for a decade or so.

At the end of the day, most Democrats do not want more oil developed, and they know that much higher prices will be necessary to meet their climate goals.  It sure would be refreshing to hear someone just say this. As I wrote at Climate Skeptic, the honest Democrat would say:

Yeah, I know that $4 gas is painful.  But do you know what?  Gas
prices are going to have to go a LOT higher for us to achieve the CO2
abatement targets I am proposing, so suck it up.  Just to give you a
sense of scale, the Europeans pay nearly twice as much as we do for
gas, and even at those levels, they are orders of magnitude short of
the CO2 abatement I have committed us to achieve.  Since late 2006, gas
prices in this country have doubled, and demand has fallen by perhaps
5%.  That will probably improve over time as people buy new cars and
change behaviors, but it may well require gasoline prices north of $20
a gallon before we meet the CO2 goal I have adopted.  So get ready.

Postscript:  By the way, oil companies have been trying to develop shale oil since the 1970s.  Their plans went on hold for several decades, with sustained lower oil prices, but the call by the industry to the government for a clarified regulatory regime has been there for thirty years.  The brief allusion in Salazar's speech to water availability is a valid one.  I saw some studies at Exxon 20+ years ago for their Labarge development that saw water availability as the #1 issue in making shale oil work.

PPS:  I mention above that the pain of fuel prices not only hits the wallet, but hits in term of painful lifestyle changes.  One of the things the media crows about as "good news" is the switch to mass transit from driving by a number of people due to higher oil prices.  This is kind of funny, since I would venture to guess that about zero of those people who actually switched and gave up their car for the bus consider it good news from their own personal life-perspective.  Further, most of the reduction in driving has been the elimination of trips altogether, and not via a switch to mass transit.  Yes, transit trips are up, but on a small base.  95%+ of reduced driving trips are just an elimination of the trip.  Which is another form of lifestyle pain, as presumably there was some good reason to make the trip before.

Update: Updated on Canadian Oil Sands production here.  Funny quote:

Fourth, and potentially most important, the U.S. "green" lobby is
pushing legislation that could limit purchases of oil sands products by
U.S. government agencies based on its GHG footprint.  It would be well
beyond stupid for Congress to prohibit our buying oil from Canada while
we increase buying it from countries that threaten our security.  But
just because something is stupid certainly does not mean Congress may
not do it.