October 7, 2010

Heat, Thermostats and Serious Content (photo: Dan Zeng)
A few weeks ago I posted on the
MS Hohm blog about programmable thermostats — Energy Star no longer recommends them, but not because they don’t work, but instead because people don’t use them correctly.
Studies show that people can be lazy, intimidated, etc. But I want to discuss a significant reason pointed out in the study: people have an incorrect “mental model” of how programmable thermostats work (PDF).
A mental model is just how you picture something working — how you understand stuff in order to get through a complicated world, right or wrong. A classic mismatch of mental model and reality is that “the computer” is the the screen, rather than the part that has the CPU, Memory and Disk in it (leave it to Apple to make a computer that matches peoples’ mental models!)
Apparently a certain Alaskan Senator had the mental model of the Internet as a “series of tubes.” But I won’t go there.
My hope is that where it matters, we can get a proper mental model that helps us make good decisions. Here are some that caused people to not use programmable thermostats. (more…)
September 28, 2010

Always On (photo: uberculture)
As part of my participation in a beta test for
PlottWatt (very cool), I have come to understand that our house’s “always on” electrical load accounts for about one third of our consumption. Perhaps more
vampires? Doesn’t seem plausible.
The only way to find out: measure each outlet with a Kill-A-Watt! (Can you say “obsessive“?) But occasional obsessiveness is good for the soul. And budget.
So on the last grey Saturday, me and my trusty Kill-a-Watt
went around seeing if we could answer the question: how much could we save?
The answer was neither encouraging nor discouraging: it was simply illuminating. (And, another $70/year, tax free savings — see the link to my spreadsheet below.)
And isn’t that what it’s all about? (more…)
September 27, 2010
Say it isn’t so — my Macbook will not sleep! When I abandoned Windows for a Macbook, I hoped I would resolve a problem with not sleeping (entering sleep mode) that I have posted about before — my Windows XP Sleep and Hibernation posts continue to generate thousands of views, but alas, Snow Leopard, OS X doesn’t always sleep, either.
I have done a fair amount of research and think I understand why my macbook will not enter sleep mode, and how the OS X sleep process works. And importantly (and unlike Windows): what you can do to resolve the issue. The short answer is: there’s no built-in way to ensure your Mac goes to sleep automatically, but there’s a great bit of free software you can install, which in my tests works perfectly: PleaseSleep. (more…)
July 8, 2010
It was 97°F in Boston this week, and we didn’t turn on the air conditioner. Or fans.
That’s because we’re not home. We have vacated the heat of the city. Where we are, it’s a little chilly at night. We have the ultimate luxury. It’s not a central air system. It’s not a super-insulated house. It’s a very small, spartan cottage, on the water of Penobscot Bay in down-east Maine, which I share with my sisters.
My mom, who is in her 80′s lives here in Deer Isle, Maine, year-round, and visited tonight. She was born in Baltimore, and as we discussed the heat wave along the East Cost (consistent with the predictions of climate change), we asked how people managed to tolerate the heat in Maryland in the 1930′s. She said that her rich friends all got out of town and headed for the ocean. (more…)
June 26, 2010
Please rank the relative cost or trade-off of
- oil
- natural gas
- coal
- hydro
- geothermal
- wind
- solar
When you rank, consider things like
- value
- cost
- climate
- benefit
- alternatives
- risk
- economics
- jobs
What were your criteria? Were they different than they were a few months ago? (more…)
June 24, 2010
In a couple cases recently, I have heard people talking about how the Jevons Paradox will undermine efforts to use energy more efficiently — and it certainly seems like it would fit, but it doesn’t apply to our current energy problems for several reasons: conservation, and improved efficiency are still our best options.
Or, so started a post that I began writing a couple weeks ago. Then, in some sort of karmic mind-meld, Peter Troast at EnergyCircle.com wrote a post about Jevons, with almost the same conclusion as I was going to draw. Yeah, right, I hear you say.
So anyhoo, I think this topic is important to the larger discussion of energy, especially renewable energy, so here’s a link to Peter’s post on energy efficiency, which already has a nice thread of comments and observations — take a look, it’s a good read — and, add your thoughts!
June 7, 2010
(I wrote this on May 28th, but never published. I am publishing now because I think things might have changed enough).
I have an opinion about just about everything, including opinions. Daniel Weiss did a nice post on the Climate Progress blog showing how dramatically public opinion has shifted in the month or so since the oil spill started.
In short, people don’t think offshore drilling is such a good idea any more, and they’re willing to trade off economic development for environmental protection.
In my opinion, this shows how little value there is in the opinions of people. I am not trying to be negative, or get attention by being contrarian, smug, or elitist.
Instead, I think we’re at some rather great risk of self-destruction if we keep making policy opportunistically, and avoiding discourse and action until the time is right. (more…)
April 29, 2010

Credit: New York Times
I think I should claim a scoop on this story, as when I wrote
my post the other day, I had beat the New York Times and most other media to identifying the BP Oil Spill as a rather major disaster. I am sad to say “I told you so”.
The news media seem to be coming around to my way of thinking. The New York Times is now reporting as the lead story that, um, those 42,000 gallons of oil per day leaking into the sea may be more like, um 210,000 gallons (this is all converted to “barrels” now — an oil barrel holds 42 US gallons, so the initial estimate was 1,000 barrels/day is now 5,000).
Holy hole, Batman!
And it appears that BP’s public relations operation has also gotten bigger.
Fortunately, the problem isn’t that bad. No, really. (more…)
April 27, 2010

Not As Important as...
I was surprised to hear (for the first time today) that there was an oil drilling platform in the Gulf of Mexico that, um, exploded last week (a couple days before Earth Day), and is currently pumping 42,000 barrels of oil a day into the water, and attempts to shut down the leak (1 mile down) have failed repeatedly since the leak was discovered on Saturday — I happened to be in my car and heard a
report on NPR.
After dinner, I went to the New York Times to read more.
But I didn’t find anything without a search. Granted, lots of news today:
- Goldman Sachs CEO questioned on possible fraud
- Republicans blocking attempt to reform our financial regulations
- Stock market down 2% because Greek credit rating cut to “junk”
- Strict abortion measures enacted in Oklahoma
- Impacts from Arizona’s immigration laws
So I started trolling around the sections. World: nada. Business: nope, all front page stuff, plus Ford makes a big profit. Technology: Apple iPad related story. Science? Nope. Green? Nope. (Really!) Health? Nope. US: fifth story, something about Robots (turns out to be about the oil disaster).
Good thing for British Petroleum, apparently a lot of other big news pushed their little disaster to the back of the book. (more…)
April 21, 2010
In the last month, oil prices have been over $80 a barrel — prices were over $86 twice, fell, and are now back on their way up.
Gasoline prices are around $2.80/gallon, up from around $2.00/gallon a year ago and rising a little each week over the last month.
Heating oil cost has risen over the year from $1.40/gallon to around $2.20/gallon.
Natural gas is also up year over year, rising from around $3.50/MMBTU to around $4.00, and volatile, closing over $7 for a few days in the winter.
However, domestic US Coal prices are about even, down a little, this year (from $2.21/MMBTU to $2.14) — I guess the energy we produce at home can be less expensive. Too bad burning coal releases about 2x the CO2 of natural gas (and a great deal more than wind and solar).
How We Respond To Energy Price Changes
But it appears that only energy prices drive our behaviors. We tend to over-react in some ways (markets, producers, consumers), yet have remarkably short memories, and seemingly weak abilities to identify coming changes.
I do understand that many people are negatively affected (more…)