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Monday, July 31st, 2006

more ways to beat global warming

Bim forwarded a link to this great Wikihow article about greenhouse gas emissions and global warming:
Reduce Your Greenhouse Gas Emissions

It’s a great complement to my earlier (but much smaller) list of ideas for slowing global warming.

The Wikihow has so many ideas, it’s easy to pick one or two per week to get started. I think all conservation initiatives have been stifled by the perception that the problem is too big for any one individual to solve. It’s true, of course, but ironically if millions of individuals do take action, then we make significant progress. So, start small: change a light bulb. See a movie. Read the Wikihow article and forward it to friends.

We’re already following, or have followed 17 of the 44 tips listed on the page. It’s good to know there’s more we could do.

I especially like the idea of getting an “energy audit” from the local utility. PG&E used to offer such a program, I think; I remember ads offering a free CF light bulb to entice ratepayers to sign up. That program seems to have gone the way of the electric car, just in time for, erm, an unprecedented ecological disaster.

The PG&E site does offer a checklist of ideas for reducing energy usage around the home, with estimated savings rates, e.g. save 2% off your monthly bill by turning off lights when they’re not in use.


Tags: global warming, an inconvenient truth, greenhouse gases
posted to channel: Conservation
updated: 2006-08-01 04:30:41

Friday, July 28th, 2006

yet another Chank font sale

Chank’s font sale is back.

I haven’t done any visual design in three years, which I consider a gift to consumers of media everywhere. But even so, I have a dozen Chank fonts in my collection, including a couple that have since been renamed to be safe for corporate America. (e.g. Dickwhipped Lincoln).

Update: I just realized that Chank & Co. are changing font prices daily. Reload for the latest and lowest.

See previous Chank.com pimpage.


Tags: chank, fonts
posted to channel: Personal
updated: 2006-07-29 17:47:27

Sunday, July 23rd, 2006

solar billing snafu: meter misreading

New photovoltaic users in California look forward to their first “trueup” bill from PG&E, as its 12 pages are dense with tables and graphs showing energy usage and fees for the month. It promises to reveal in fascinating detail the PV system’s production and the household’s demand, culminating in the month’s balance — charge or credit — which ultimately, at the end of the year, will ideally be $0 for a well-sized PV array.

But a month later, photovoltaic users simply file the monthly trueup bill without a glance, because 11 of those 12 pages are utterly incomprehensible.

I used to read the cover page, because as noted above it shows the running total dollar amount, which is both interesting and easily understood. Most of the time.

My numbers for the first quarter:

MonthCurrent unbilled chargesTotal unbilled charges
Jan$44.35$44.35
Feb-$8721.89-$8677.54
Mar$9221.63$544.09

In other words, according to the trueup bill, in February we generated about 30,000 kWh of surplus power, which if my math is right would actually require 500 days of pure sunshine, with no clouds, and 70°F ambient temperatures so the panels don’t get too hot. Oh, and those would have to be 24-hour days. And the sun would have to be perfectly overhead the entire time.

Considering that we get somewhat less than 24 hours of perfect direct sunshine every day, and we occasionally see a cloud, it would actually take more than 500 days to generate 30,000 kWh of power. Our array was turned up in January, 2004, and to date we’ve only generated about 9850 kWh… so we’ll need something like 7.7 years to hit 30,000 kWh. A bit more than 28 days, anyway.

Then in March, according to the trueup bill, we burned over 30,000 kWh, which I guess would be possible if I accidentally left the oven on for, say, 8 months. In February.

So the dumb thing is that there’s no bounds checking in PG&E’s bill calculation. It ought to seem unlikely that a household could spike its solar electric generation by a factor of 100 within a month’s time, especially considering that the last time a private citizen tried to put a 30kW PV system on the grid, it took 14 months of negotiations and a lawsuit before PG&E turned it up.

The other dumb thing is that the correction one month later was also incorrect. My unbilled charges for March should be $100 or less, not $544. But nobody caught this either. Had I not called to complain, I’m sure my year-end bill would have been ~$400 too high.

Fortunately, PG&E was relatively quick with the explanation (a mis-read meter) and a corrected trueup bill.

Solar Electric Generation, July 2006Unfortunately, our generation for 2006 is low by about 12% as compared to 2005. I’ve contacted our vendor to investigate possible problems. It’s possible the weather this year is to blame; our vendor can compare our generation to other installations in the area.

See also our running total electric charges for the year — we appear to have recently squandered a savings of ~20% off our 2005 fees. This week’s heat wave sure isn’t helping anything, either.


Tags: photovoltaic, trueup, solar, pv, pg&e
posted to channel: Solar Blog
updated: 2006-07-24 04:23:42

Friday, July 21st, 2006

macbook vs. macbook pro, buyer’s guide and feature comparison

Next week I’m going to buy either a high-end Macbook or a low-end Macbook Pro. They are very similar machines, with a couple key differences that may or may not justify the $700 price difference. Following is a feature-by-feature comparison, assembled to help me decide whether the Pro is worth the extra money.

13-inch Macbook15-inch Macbook Pro
Similarities
cpu:2.0 GHz Duo2.0 GHz Duo
disk rpm:54005400
usb 2.0 ports:22
firewire ports:1 (400)1 (400)
wifi interface:802.11b/g802.11b/g
optical drive:DVD±RW, CD-RWDVD±RW, CD-RW
ethernet:gigabitgigabit
Bluetooth:yesyes
iLife bundle:yesyes
optical digital audio i/o:yesyes
iSight camera:yesyes
Differences
RAM:256MBx2512MBx1
ExpressCard/34:noyes
video card:Intel 950Radeon X1600
dedicated VRAM:noyes
disk capacity:60 gb80 gb
backlit keyboard:noyes
weight:5.2 lbs5.6 lbs
screen size:13.3''15.4''
resolution:1280x8001440x900
max battery life:6 hrs4.5 hrs
case:plastic (white)aluminum alloy
Price:$1299$1999 ($1849 $1499 at Amazon)

Taking the differences in turn:

So what would the extra $700 really buy me? A bigger screen, but shorter battery life… a backlit keyboard, but potentially inferior wifi performance.

Or, on the other hand, it could buy me a couple nice microphones!

Hmm, anybody want to buy a well-loved Powerbook for $550?


Tags: macbook, upgrade, macbook pro
posted to channel: Personal
updated: 2007-02-25 20:22:46

Tuesday, July 18th, 2006

7 things I did to help slow global warming

I saw the global warming movie, An Inconvenient Truth, on opening weekend, eager to contribute in some small way to a box-office success story.

I left the theater with mixed feelings, simultaneously elated that, finally, someone had made a vehicle that could carry an overdue pro-environment message to a mainstream audience, and thoroughly depressed that we appear to be well and truly f*cked. (For example, if those carbon dioxide numbers are correct, will the atmosphere recover before we’re all crowded inland battling neighbors for fresh water?)

The other depressing thought I had was that this movie could have a further polarizing effect on Americans, when clearly the only possible solution is for everyone to pull together to solve the problem — much as we apparently did in the 1980s to phase out CFCs to prevent further damage to the ozone layer of the atmosphere.

For example, as the Chronicle reports in Gore movie reaching the red states, too:

Since the Al Gore global warming film, “An Inconvenient Truth,” opened in the Bay Area five weeks ago, approving audiences have left the theater murmuring a similar refrain: “I hope the people who need to see it, see it.”

I realize that’s maybe just the author’s hook, but if it’s true, then the movie is failing. Global warming is not a “them” issue. If you drive your Prius to Whole Foods to buy organic bell peppers from Israel and store them in your EnergyStar refrigerator, you’ve produced 100x as much global-warming gas as the average resident of any nonindustrialized country in the world did today.

Really 100x? No, it’s a guess. But you get the idea: Americans consume 26 percent of the world’s energy. The statistic isn’t about “Red state Americans” or “SUV driving Americans.” It’s about multiple TV and refrigerator and washer-dryer and car-owning Americans. You and me and even the guys who work at the Zen Center.

In fact, the illogic of that sentiment — “I hope the people who need to see it, see it.” — is astounding. It means, essentially, “I think the world is facing an unprecented environmental disaster, which I’ll very likely live to see and suffer from… but I’m going to wait for those jerks in the Red states to fix it for me.”

So, the movie needs to pull people together. And I think it tries to, as when Gore talks about a “moral obligation” to solve this problem. I think progressives are so used to thinking about the Republicans or neocons or the remaining third of citizens who think Bush is doing a really knock-out job, etc., as the enemy, that it’s a native reaction to do the same here. But it won’t fly. We can lead, but we have to make sure they follow. For anyone still waiting for “them” to get it, please wait somewhere in southern Florida. Bring your hip-waders.

The challenge for me was to channel the movie’s message into action. I feel like I’m pretty energy conscious and conservative already; e.g.:

But I had to do something; if I couldn’t come up with a constructive reaction to the movie, I’d be just as lame as the people who won’t see it because they dislike Al Gore.

Radiant barrier insulationIn hopes someone finds inspiration here, here’s a list what I’ve done so far:

Still to do: buy carbon offsets [DONE]. Clean the filters in the furnace and the coils under the refrigerator. Bring a PV vendor into the office for a companywide sales pitch. Investigate “green” electricity (PV or not, I’m still on the grid).

What have I missed? Send me your ideas.

Here are 32 ideas from the movie site: Reduce your Global Warming impact at home


Tags: global warming, an inconvenient truth
posted to channel: Conservation
updated: 2007-01-23 05:52:20

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