Tuesday, 21 June 2011
City financing: thoughts from the peanut gallery
Posted by
cherenkov
0
comments
Labels: Manitoba, math, things that I'm not qualified to comment on, Winnipeg
Sunday, 19 September 2010
Watt kind of a deal is this?
Are you shocked and concerned that Manitoba Hydro is selling electricity to the U.S. for barely 1/3 the price that we pay here in Manitoba?
most of Manitoba Hydro's export sales last year were made on the spot market and sold for an average of 2.37 cents per kilowatt hour, down dramatically from 2008-09 and a fraction of what Manitoba homeowners pay. -fp-You shouldn't be too concerned because spot market prices change, and we could be selling it for much more next year. Look at this as a blip. What you should be concerned about are the long term deals that Hydro is negotiating, and don't be surprised if the "locked in" prices are shockingly low. The hints are already on the Hydro web site:
- The extension of our existing contract with Xcel Energy was signed for 'close to' $3b for 375-500 mW of power for 10 years. This works out to about $0.068 / kWh. No additional generating power required.
- The new contract signed with Wisconsin Public Service is also for up to 500 mW of power, but it is for 15 years, will require new hydroelectric facilities and the bipole III line, but is only anticipated to be worth 'over $2b'. This works out to something more in the range of $0.03 / kWh
I don't know how much the Keeyask dam will cost, but Wuskwatim will cost $1.3b (if all goes well I assume) and it only produces 200 mW. I need to do some ball-parking here, but since Keeyask is a much larger dam (695 mW) I will guesstimate that it will cost as least twice as much ... say $2.6b. bipole III will cost $2.2b. How are we going to get our money back on this $6.1b investment? By selling our power for 3 cents?
If we sell our power to Wisconsin and to Minnesota Power (15 years, up to 250 mW) at that rate, the present value of that revenue using a modest 5% discount rate is only $2.08b. Using a 3% discount rate we'll break even after 100 years. With a 3.5% discount rate we never get our money back.
Of course it's much more complicated than that, but all I'm doing here is what we in the biz call a "sanity check", and to me the numbers aren't adding up. At the very least we can get a sense of the risk that the whistle-blower chick was talking about.
I took issue with M.A. Welch's statement in the paper that the east side bipole III route is "less green". I've suggested on this blog before that incremental line losses from the west side could have displaced coal power in the U.S. thereby eliminating 500 million pounds of CO2 pollution each year, or potentially much more.
I emailed Mary Agnes, who sent me a thoughtful response conceding that perhaps she could have worded it differently, but pointing out that all the environmental groups support the west side. My response (in part):
I'm not sure that every environmental group agrees the west side is greener. The ones that I've seen take a position on it -- Boreal Forest Network, CPAWS, etc. -- have a mandate to protect the forest. They may not be ambivalent towards pollution and global warming, but to them cutting down trees will trump the waste of 50 MW of power, even if the waste of power is more significant in the larger view.I have difficulty accepting that any objective environmentalist could advocate the waste of that much power, and I maintain that picking the west side route has nothing to do with saving the environment. If you want to know what it's really about read my last post on this subject.
Posted by
cherenkov
2
comments
Labels: Bipole disorder, Manitoba Hydro, math
Monday, 19 July 2010
Long form census
Canada must be a pretty damn boring country if the big issue of the month is scrapping the mandatory long form census. Still, while it might be a dry and esoteric subject, there is some significance to it. The significance is not just in the potential loss of accuracy in the data, or increased costs of collecting the voluntary surveys that will replace it; but in the bigger picture about how people view the government. Anytime the government implements a policy that costs more money, with explanations that don't make any sense at all, people get suspicious and cynical; and start hypothesizing about alterior motives -- very much like the Manitoba government and their unjustifiable direction regarding Bipole III.
Let me paraphrase some of the arguments:
Tony Clement: "We are scrapping the census because Canadians are complaining about the intrusion of their privacy."
Office of the Privacy Commissioner: "Uh, no, actually. We've only received three complaints in the last decade."
Tony Clement: "It was a recommendation from Statistics Canada. If it's good enough for them, why isn't it good enough for you?"
Statistics Canada: "Uh, not quite... You asked us for options, and that was the least recommended of the options we gave you."
Let's let Maxime Bernier get in on this:
The state does not belong in the bedrooms of Canadians and Canadians must have the freedom to choose if they want to answer it.Trudeau? Really, Maxime, you're going to pull a page out of the Trudeau playbook?
Then there was Dean del Mastro, who "has taken a number of statistics courses" in his life. Dean explains that, in fact, voluntary data is used all the time, and through the magic of random sampling, can be quite accurate within know parameters.
Hey, I've got a riddle for you: what has two thumbs, a green avatar, and has also taken a number of stats courses?
...
Me. It's me you idiot.
Maybe that would have worked better if you could see me. Anyhow, Dean is quite right of course ... voluntary surveys are used all the time. Money is spent and decisions are made based on the results of those surveys, and there is a whole science concerning the design of questionnaires and surveys, and the accuracy and biases therein. So why can't it be used in place of the long form census?
Well, for one, it's going to be more expensive because it's going to go out to more people. Also, if asking 1 out of every 5 people personal questions is wrong, is asking twice as many people personal questions not wrong?
There is also a question about potential biases: when response rates drop, accuracy becomes more questionable. With the sensitive nature of some of the questions on the census, one might expect response rates to drop significantly. This is more problematic when the response rates vary between different demographic groups. You might be able to adjust for that in some cases, but the long form census itself is one of the key sources for collecting that demographic data, and therefore is very important.
To me, this decision by the government is puzzling and disappointing. They still have failed to properly explain it, choosing instead to make unprovable claims about privacy concerns, and playing up the fear factor about soldiers smashing down your door and throwing you in the gulag if you don't fill it out.
My answer to them is this: if some of the questions on the long form are too personal and have outlived their usefulness, then change those. Shorten the form a little bit. Have a little chat with Stats Can and say, look, is this particular question really necessary? But you've lost this battle, and anything you say at this point will just make you look more foolish. Not only that, but Michael Ignatieff could run over a baby on his bus tour and nobody would notice because of this stupid census squabble.
Or maybe that's the point ... keep the press's attention turned away from Ignatieff's BBQ road trip, even if it means making a bad decision and creating a whole new wave of cynicism in the electorate.
Posted by
cherenkov
4
comments
Labels: government ineptness, Let's burn Ottawa to the ground, math

