Climate Climate & Energy

Small wind in urban settings

I never really thought much about small wind's potential as a significant source of a city's electricity supply. Windmills in a urban setting? I just don't see it.

Didn't see it, that is, until I saw it. The other day I biked by 1303 Alabama St., in the Mission District of San Francisco. Softly -- very softly -- whirring overhead is a 1.9 kW Southwest Windpower Skystream windmill. The Choose Renewables resource estimator says that it's a class 3 wind site, but I wouldn't be surprised if it's actually higher. As any San Franciscan knows, the Mission can be very sunny and pleasant during a summer day, but on summer evenings, as the marine layer moves in, the wind just nukes over Twin Peaks and the South Mission/Noë area can be a wind tunnel.

The result, I expect, makes for propitious economics. The house also has a 5 kW SunPower solar system. California's system peak is shifting later and later, which is being reflected in PG&E's tariffs. The old E-7 Residential Time of Use (which is being phased out) had a summer peak of 12 to 6 p.m. The new E-6 has a summer peak of 1 to 7 p.m., and a partial peak of 7 to 9 p.m. In practice, that means that as the solar system's production winds down in the early evening, the windmill steps in and produces electricity that would have cost up to 53 cents/kWh if bought from the utility.

That's just a wonky way of saying that wind and solar are like peanut butter and chocolate: great on their own, but even better together.

Similarities between the skin cancer and climate change ‘scams’

I was recently reading The New York Times and saw a fantastic ad:

Recent research indicates that the benefits of moderate exposure to sunlight outweigh the hypothetical risks. Surprisingly, there is no compelling scientific evidence that tanning causes melanoma. Scientists have proven, however, that exposure to all forms of ultraviolet light -- both indoors and out -- stimulates the natural production of vitamin D. And research has proven that vitamin D protects against heart disease and many types of cancer, in addition to providing other important health benefits.

If you go to their website, you can read all about it.

The similarities between the "skin cancer" scam and the "global warming" scam are all too clear. First, according to this website, there is actually no evidence linking sun exposure with cancer. Amazing. I thought the epidemiological data nailed that connection decades ago. Boy, was I wrong! This is similar to the fact that there is no evidence linking carbon-dioxide emissions with climate change.

Cheap at any price!

More news from the world of cheap coal: Santee Cooper said Wednesday that the first phase of its proposed Pee Dee coal-fired power plant [in Florence County, South Carolina] will cost $1.25 billion, up from its original estimate of $998 million. Even that may be under-stating it: Blan Holman, a lawyer for the Southern Environmental […]

DOD panel calls out power grid disruption threat

Here's another good reason to fix a shaky and outdated power grid, from the Defense Science Board: keeping the Air Force flying during the next terrorist attack.

The military focuses much of its efforts on avoiding global petroleum disruptions. But it has not thought much about power grid disruptions that could affect its own bases, the Department of Defense (DOD) group says in a report authored by former Defense Secretary James Schlesinger

The board says "physical or cyber sabotage -- or even a simple capacity overload -- could devastate U.S. military and homeland security installations and have a frightening ripple effect across the country, leaving everything from sewage systems to border security controls paralyzed for weeks, perhaps months," ClimateWire reports ($ub. req'd, but free trial available).

Investigators noted: "A long-term major power outage would have significant consequences for both DOD and the nation ... Unfortunately, the current architecture of the grid is vulnerable to even simple attacks."

Pielke labels adaptation what is actually mitigation

The wheels may be falling off the media's climate discussion, if a recent L.A. Times piece is any evidence. The piece, "Global warming: Just deal with it, some scientists say," is really an article about not dealing with it.

The L.A. Times, with the help of the delayer-1000 du jour, Roger Pielke, Jr., has brought to prominence (and fallen for) what I call the "adaptation trap":

The adaptation trap is the belief that 1) "it would be easier and cheaper to adapt than fight climate change" [as the Times puts it in the sub-head] and/or 2) "adaptation" to climate change is possible in any meaningful sense of the word absent an intense mitigation effort starting now to keep carbon dioxide concentrations below 450 ppm.

Sorry for the long definition, but as we'll see, the second part is especially critical in what has now become an important emerging policy debate, cleverly devoid of specifics. (Indeed, on his blog Pielke says he was misquoted and denies he believes the first part, which actually makes the LAT piece even lamer, as David shows). And being misquoted doesn't mean Pielke isn't very wrong anyway -- as we'll see at the end, Pielke is so confused about adaptation and mitigation that he takes the prize for the most backward analogy in the history of the climate debate, unintentionally proving just how wrong he is.

U.N. climate talks open in Bangkok

United Nations climate talks opened Monday in Bangkok, Thailand, as another step in the process of drafting a successor to the Kyoto Protocol climate-change treaty that expires in 2012. Officials admitted they didn’t expect any breakthroughs at the meeting this week, but there is hope that the countries can manage to agree on an agenda […]

‘Earth Hour’ event switches off lights around the world

This weekend, cities, businesses, and individuals around the world switched off or dimmed their lights for an hour to raise awareness about climate change. The event, called “Earth Hour,” started in Sydney, Australia, last year; organizers say that this year it spread to about 380 cities and towns in 35 countries, temporarily extinguishing non-essential lights […]

Biofuel boom leveling rainforest, Time reports

From an excellent article in Time: Indonesia has bulldozed and burned so much wilderness to grow palm oil trees for biodiesel that its ranking among the world’s top carbon emitters has surged from 21st to third according to a report by Wetlands International. Malaysia is converting forests into palm oil farms so rapidly that it’s […]

‘Run of river’ projects set for a boom?

When I bought my house, I didn't realize that the stream that travels its acres is perennial and spring-fed ... which seemed like the perfect scenario for a microhydro generator. These units make a lot of power all day and night, unlike solar and (usually) wind. It works by siphoning off a portion of water to run through a pipe, then through a generator, and then back into the creek. Voilà! So I did the measurements and found 140 gallons per minute, which is about enough for the purpose, but less than a 20 foot drop in elevation, which is the killer. Microhydro usually requires either high head or high volumes to pencil out, but I have barely the minimum of each.

At best, it would account for 20 percent of the house's needs -- not quite good enough for me to think too deeply about the capital expense or the fact that the town's Conservation Commission probably wouldn't allow the use. Other nearby commissions have also been unfriendly to residents employing or proposing it on their properties, even though microhydro is not a consumptive use and requires no dams.

I have some small consolation, though, knowing that all the electricity in this portion of my county's grid is already 100 percent hydro, due to its proximity to the Deerfield River (one of the most developed rivers in the country, with small dams working up a good portion of its length from southern Vermont into western Massachusetts). Which is nice, in a way: the next nearest power plant to my community uses coal from a mountaintop removal mine in Appalachia, so this somewhat green power is welcome.

So I was interested to see news that small hydro is possibly on the verge of a boom, with new estimates of 30,000 MW of potential small hydro capacity in the U.S. alone. This would build on small hydro's ubiquity in the industry, if the article is right that 80 percent of the existing hydro projects in the U.S. are low power (under 1 MW) or small hydro (1 to 30 MW).

The industry is saying it can get more power out of falling water without any more dams:

Déjà nuke

This lede made me laugh out loud: As concerns about greenhouse gases and global warming mount, nuclear energy is getting a second look in California, with supporters ranging from the governor to at least one environmental activist. Oh goodie! Who’s the token "at least one environmental activist" this time? Is it Patrick Moore, 20-year industry […]