Solar Thermal Power Coming to a Boil

July 22nd, 2008

Jonathan G. Dorn

After emerging in 2006 from 15 years of hibernation, the solar thermal power industry experienced a surge in 2007, with 100 megawatts of new capacity coming online worldwide. During the 1990s, cheap fossil fuels, combined with a loss of state and federal incentives, put a damper on solar thermal power development. However, recent increases in energy prices, escalating concerns about global climate change, and fresh economic incentives are renewing interest in this technology.

Considering that the energy in sunlight reaching the earth in just 70 minutes is equivalent to annual global energy consumption, the potential for solar power is virtually unlimited. With concentrating solar thermal power (CSP) capacity expected to double every 16 months over the next five years, worldwide installed CSP capacity will reach 6,400 megawatts in 2012—14 times the current capacity. (See data.)

Unlike solar photovoltaics (PVs), which use semiconductors to convert sunlight directly into electricity, CSP plants generate electricity using heat. Much like a magnifying glass, reflectors focus sunlight onto a fluid-filled vessel. The heat absorbed by the fluid is used to generate steam that drives a turbine to produce electricity. Power generation after sunset is possible by storing excess heat in large, insulated tanks filled with molten salt. Since CSP plants require high levels of direct solar radiation to operate efficiently, deserts make ideal locations.

Two big advantages of CSP over conventional power plants are that the electricity generation is clean and carbon-free and, since the sun is the energy source, there are no fuel costs. Energy storage in the form of heat is also significantly cheaper than battery storage of electricity, providing CSP with an economical means to overcome intermittency and deliver dispatchable power.

The United States and Spain are leading the world in the development of solar thermal power, with a combined total of over 5,600 megawatts of new capacity expected to come online by 2012. Representing over 90 percent of the projected new capacity by 2012, the output from these plants would be enough to meet the electrical needs of more than 1.7 million homes.

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Fall in tiny animals a ‘disaster’

July 22nd, 2008

Experts on invertebrates have expressed “profound shock” over a government report showing a decline in zooplankton of more than 70% since the 1960s.

The tiny animals are an important food for fish, mammals and crustaceans.

Figures contained in the Department for Environment Food and Rural Affairs (Defra) document, Marine Programme Plan, suggested a fall in abundance.

Charity Buglife said it could be a “biodiversity disaster of enormous proportions”.

They said it could have implications for creatures all the way up the food chain, from sand eels to the seabirds, such as puffin, which feed on the fish.

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Tropical Rain Forests: Bad to Worse

July 21st, 2008

Pushed from center stage by the expected record arctic ice and permafrost melt, tropical rain forest destruction has been elbowing its way back through the smoke and into view. Papua New Guinea’s rain forests disappearing faster than thought is one such look:

Previously, the forest loss was estimated at 139,000 hectares per year between 1990 and 2005. But now?

Using satellite images to reveal changes in forest cover between 1972 and 2002…Papua New Guinea (PNG) lost more than 5 million hectares of forest over the past three decades…Worse, deforestation rates may be accelerating, with the pace of forest clearing reaching 362,000 hectares (895,000 acres) per year in 2001. The study warns that at current rates 53 percent of the country’s forests could be lost or seriously degraded by 2021.

Stunning. Adding insult to injury – the good news as reported last Thursday in Malaysia didn’t last long:

PM: No clearing of forests for oil palm plantations

Abdullah, who is also Finance Minister, said the existing oil palm plantations were enough to cater to current demands and there was no need for the opening of new plantations at the moment.

Fast forward THREE DAYS:

Sarawak to open more land for oil palm

Sarawak will continue to open up more land for oil palm plantations, Chief Minister Tan Sri Abdul Taib Mahmud said here yesterday. He said this would not go against the prime minister’s directive on the clearing of land for oil palm plantation as it did not apply to the state.

So much for Malaysia lending a hand.

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Hunger brings anguish for millions of Pakistanis

July 21st, 2008

THARPARKAR, Pakistan: When Pakistani labourer Mangal Ram’s children cry from hunger all he has to offer them is empty promises.

“My kids complain and cry for more food but what can I do?,” said Ram, 50, a father of seven who lives in the desert village of Tharparkar, in the southern Pakistani province of Sindh.

“We say ‘wait, we’ll cook more’, what else can we do?” he asks with a shrug.

Ram’s anguish is becoming increasingly common in Pakistan where inflation is running at about 20 percent, led by fuel and food prices.

Soaring food prices and shortages of staples mean about 77 million people of Pakistan’s 160 million population are food insecure, a 28 percent increase over the past year, according to U.N. World Food Program (WFP) estimates.

The term food insecure means people are unable to get sufficient nutritious food to meet dietary needs.

While there have not been serious food protests in Pakistan, analysts say there is a danger anger could explode in a society that has already fallen prey to Islamist militants bent on bringing down the government.

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Biofuels May Be Even Worse than First Thought

July 20th, 2008

An internal report put together by the World Bank and leaked to the Guardian claims that biofuels may be responsible for up to 75 percent of recent rises in food prices. Even environmental groups haven’t gone that far in their estimates.

With soaring food prices high on the agenda for next week’s G-8 Summit in Japan, World Bank President Robert Zoellick has been clear that action needs to be taken. “What we are witnessing is not a natural disaster — a silent tsunami or a perfect storm,” he wrote in a Tuesday letter to major Western leaders. “It is a man-made catastrophe, and as such must be fixed by people.”

According to a confidential World Bank report leaked to the Guardian on Thursday, Zoellick’s organization may have a pretty good idea what that fix might look like: stop producing biofuels.

The report claims that biofuels have driven up global food prices by 75 percent, according to the Guardian report, accounting for more than half of the 140 percent jump in price since 2002 of the food examined by the study. The paper claims that the report, completed in April, was not made public in order to avoid embarrassing US President George W. Bush.

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Letter to a young idealist

July 20th, 2008

R.,

A few more thoughts along the same lines I talked about previously.

All of humanity’s history has been a series of incremental advances along multiple paths; business, social organization, military, agriculture, technological, etc. In all of this, the thought has primarily been to advance, empower and grow.

Now, for the first time in humanity’s history, we have filled the planet and have begun to hit various unyielding limits; water, food, oil, pollution, as well as limits having to do with how much impact we can have on the biosphere without causing huge shifts in the demographics of various species and even causing their extinctions.

It is clear, if humanity wants to continue to live indefinitely on this planet, that we are going to have to shift from a growth and advance strategy in all we do to one predicated on establishing a steady-state and sustainable balance with the biosphere around us.

We cannot use renewable resources faster than they can regenerate. We cannot occupy more of the planet’s surface than is consistent with allowing the rest of the planet’s biology to exist and flourish. These both imply that our population has to come down to some sustainable number and be held there. We have to come up with ways to govern ourselves that are consistent with establishing and maintaining these essential balances. Nation against nation, system against system is not compatible with long term survival. The ultimate goal and purpose of government in an enlightened world should be to secure all of our futures (we and all the rest of the planet’s biology) and maintain the balance.

We could, if we cut our population to sustainable levels and learned to live within a sustainable footprint on this planet, exist here for tens of thousands of years and maintain a decent quality of life for all those who are alive at any specific point in time. We do not have to give up comfort or technology – we just have to dial our impact on the planet back to sustainable levels and stay with in those levels.

Anything that the Gates Foundation or any other forward looking organization works on that does not include long term goals like these is likely in the big picture to just be a shuffling of our problems from one place to the other rather than a real indefinite-term planet-wide solution to how our species is going to solve the problem of learning to live here without fouling our nest for ourselves and all the other species that depend on this planet’s biosphere.

South Australia drought worsens

July 19th, 2008

A long-running drought in Australia’s main food-growing region, the Murray-Darling river basin, has worsened, a new report says.

Three months of dry weather and the driest June on record have plunged the area back into drought, the Murray-Darling Basin Commission says.

Crossing much of south-east Australia, the Murray-Darling is the country’s most important river system.

The basin produces 40% of Australia’s fruit, vegetables and grain.

Experts say the drought will hit irrigated crops like rice and grapes the hardest, because other crops, such as wheat, depend more on rainfall during specific periods.

Grim picture

Corey Watts, of the Australian Conservation Foundation in Melbourne, told the BBC that drought was becoming a regular occurrence instead of happening once every 20 to 25 years.

“We’ve had a string of reports, official reports, over the last fortnight painting a pretty grim picture for the climate and the future of our economy and our environment,” he said. “So now we’re looking at a future in the next few decades where drought will occur once every two years.”

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No Solutions to be Found in Japan

July 19th, 2008

– Another big global meeting to try to solve the world’s environmental problems and once again it all amounted to nothing.   I can’t think why I might be surprised.

Here are some other notable meetings (yawn):

– – – – – – – – – – – – –

The G-8 summit in Japan this year seemed more interested in harmony than in making progress on a number of pressing issues. From climate change to world finance, courage was nowhere to be seen.

It was hardly to be expected, but in the end, the G-8 did actually make a bit of progress when it comes to combating climate change. Last year, when German Chancellor Angela Merkel put the issue high up on the agenda for the G-8 summit in Heiligendamm, many of her world-leader colleagues were unimpressed. But this year, many of the points she proposed in 2007 were adopted with little opposition. The global warming assessment produced by the International Panel on Climate Change (IPCC), for example, was embraced as was the demand that an international agreement on reducing greenhouse gas emissions must be negotiated under the aegis of the United Nations.

The formulation of the summit’s closing communiqué likewise goes a bit further than one year ago. Whereas last year, G-8 leaders agreed to “seriously consider” halving CO2 emissions by the year 2050, this year, the group agreed to cut emissions by “at least” 50 percent — though no base year was provided against which that cut should be measured.

More… (or less, depending on how you look at it)

Forests to fall for food and fuel

July 19th, 2008

Demand for land to grow food, fuel crops and wood is set to outstrip supply, leading to the probable destruction of forests, a report warns.

The Rights and Resources Initiative (RRI) says only half of the extra land needed by 2030 is available without eating into tropical forested areas.

A companion report documents poor progress in reforming land ownership and governance in developing countries.

Both reports were launched on Monday in UK government offices in London.

Supporters of RRI include the UK’s Department of International Development (DfID) and its equivalents in Sweden and Switzerland.

“Arguably, we are on the verge of a last great global land grab,” said RRI’s Andy White, co-author of the major report, Seeing People through the Trees.

“It will mean more deforestation, more conflict, more carbon emissions, more climate change and less prosperity for everyone.”

Rising demand for food, biofuels and wood for paper, building and industry means that 515 million hectares of extra land will be needed for growing crops and trees by 2030, RRI calculates.

But only 200 million hectares will be available without dipping into tropical forests.

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Emotional non-negotiables

July 19th, 2008

I was reflecting last night on conversations I’d had with two different people recently. The subjects had been the environment, the state of the world, and the likely directions history will take in the near future.

Both my friends clearly understand the situation that we (humanity) are in. They are not denialists in any sense of the word- they really get what’s going on.

But, I noted, they were both emotionally distressed about it. And that their distress was causing them to waffle back and forth between seeing the situation we’re in clearly and then switching around to trying to ameliorate it by saying something like, “Well, humanity has tremendous powers of creativity – surely we’ll think of a way to avoid these problems.

Watching them squirm got me to thinking about what it was that was making them squirm.

One of my friends has older parents who live in a major metropolitan area and she’s made a commitment to them and to herself to live near them in their closing years. She’s also dependent upon them financially as well. Later, when they’ve passed on, she will be able to live where she wants and how she wants – but for now, she’s made commitments that tie her to this city.

My other friend had been thinking very seriously about immigration to New Zealand as a result of his analysis of the world’s situation. But, after a lot of agonizing and thinking about his extended family here on the U.S., he decided that he couldn’t simply abandon them and go off to save himself. So, he’s decided, out of love of family, to stay here with all of them and face the hard times together.

To me, it looks like both of these folks have the same problem. They’ve both made emotional decisions to stay but at the same time, they are both confronted with convincing reasons why they should go. Cognitive dissonance is the result. And the way that the mind tries to reduce cognitive dissonance in a situation like this is to try to reinterpret the data that suggests they should leave into something less convincing.

It seems to me that their rational mental processes are being distorted by the presence of emotional non-negotiables in the mix.

When this first occurred to me, it seemed like a bit of an epiphany and I spent several hours over the next day or two noodling it over. In the end, I saw that it was no epiphany at all but just something I’ve known about and acknowledged forever. It’s just that I hadn’t quite looked at it from this angle before – especially as it relates to how people see the world’s current situation.

On the web site Al Gore’s put up about his movie, “An Inconvenient Truth“, he has a quote that I’ve admired since I first saw it.

It’s difficult to get a man to understand something when his salary depends on his not understanding it.

– Upton Sinclair

This captures a lot of what I thought was my epiphany.

When, in the past, I’ve asked myself why people seem so obtuse about seeing the state of the world right in front of their eyes, I’ve assigned the cause to a variety of things like ‘He’s a Republican.‘ or ‘He’s a Libertarian.‘ or ‘He’s a right-wing Christian.‘ or “He has no understanding of science.‘. Or any of a long list of other reasons.

But, amazingly, I’d never seen that all of these folks, just like you and me and everyone else, are encumbered by any number of emotional non-negotiable factors that limit their ability to process the data before them solely on its own merits. We are all twisted by our emotional attachments.

Men who run corporations and have their identities and all of their finances tied up in those endeavors cannot think objectively about the good or ill that corporations do in the world.

People who cannot move away from an area of danger (like my two friends), cannot see the data indicating the danger they are in clearly without cognitive dissonance. And that cognitive dissonance generates stress which the mind will try to lessen how ever it can.

Religious conservatives have staked their faith on the fact that God has everything well under control so how can they objectively view information that shows things are getting badly out of control around them?

Libertarians believe that free markets will find appropriate solutions for all conceivable problems so how can they assimilate the fact that the financial sieves that are multinational corporations and Globalization are steadily increasing the wealth of the very few at the expense of the many.

I’ve had to smile privately at Republican friends of mine as they held forth on the merits of less government and free markets. And then I watched them stress as they tried to explain why all these ‘free’ corporations and ‘free’ markets, which only care about next quarter’s numbers, are sending all of our jobs and manufacturing overseas to the benefit of their bottom lines but to the ultimate degradation of the country and the lives of those who live here.

I recall reading a Buddhist tract a long time ago. It said something like,

One can only see what one is looking at clearly when one doesn’t care what one sees.

Yep, that about sums it up. And we, all of us, are emotional creatures who are emotionally bound to certain ideas, creeds, places, points-of-view and whatever. And all of us, therefore, are not clear and rational thinkers to the extent that these emotional non-negotiables warp our rationality.

I don’t think any of this changes my prognosis for the world. I still think it is bleak. Perhaps, even more so given that I now see that many (most, all) of us are incapable of rational perceptions due to our emotional attachments. But, it does, perhaps, make the problem a bit clearer.