Solar plant cheaper than conventional plants

Generating clean electricity that's as cheap as power from fossil fuels is the Holy Grail of green-energy companies. A new solar project powering California homes appears to be closing in on that prize.

Sempra Generation, a subsidiary of Sempra Energy in San Diego, just took the wraps off a 10-megawatt solar farm in Nevada. That's small by industry standards, enough to light just 6,400 homes. But the ramifications are potentially huge.

A veteran analyst has calculated that the facility can produce power at a cost of 7.5 cents a kilowatt-hour, less than the 9-cent benchmark for conventional electricity.If that’s so, it marks a milestone that renewable fans have longed for: “grid parity,” in which electricity from the sun, wind or other green sources can meet or beat the price performance of such carbon-based fuels as coal and natural gas.

via Los Angeles Times: Sempra solar energy project makes advances in costs.

This is great as long as the math is real. The company has made quite a few changes from conventional solar, including using cadmium telluride as the semiconductor instead of the more expensive polycrystalline silicon and fashioning them into thinner films.

I am not a big fan of unverified claims, especially when so much money is likely to be involved. But the exact number is not important. This installation appears to get close to or greater than grid parity without the externalities of fossil fuel power generation (carbon costs, mercury mitigation, etc.) being accounted for on the “conventional” side.

The future appears to be sunny!

One small, niggling issue, can we stop calling coal “conventional”? Coal comes from the remains of prehistoric plants that made all their biomass by using the sun as a fuel source, got buried way underground, and, after millions of years at high pressure and no oxygen, formed a carbon rich material that if burned, releases a small fraction of the energy that the sun put in it! As such, using the sun directly as a power source is about as conventional as it gets, everything else is 2nd order, derivative and fairly inefficient.

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  • Doom and Gloom on Canadian Climate Change Report

    “The conclusions [the report] draws are irresponsible,” said Mr. Prentice in an interview with The Globe and Mail from Kingston, where he was meeting with provincial and territorial environment ministers. Specifically, he said Canadians will not accept the report’s advocacy of emission targets for 2020 that would reduce Canada’s gross domestic product by 3 per cent nationally and 12 per cent in Alberta from business-as-usual estimates.

    Climate change report ‘irresponsible,’ Prentice says – The Globe and Mail.

    Canada cannot take its national unity for granted and must not, in the service of international obligations, allow itself to be immolated by a government policy of such wrenching dislocation.

    Globe and Mail Editorial

    Wow, “irresponsible”, “Threat to Canada’s National Unity?” What could we talking about? Surely, not a report that addresses the cost of meeting Canada’s commitments to greenhouse gas reductions by 2020?. A bit of hyperbole from this nation’s great flagship newspaper and the Environment Minister?

    The study (English summary) looked at two different scenarios, first the weak sauce 20% reduction from 2006 levels by 2020 proposed by the Canadian government. The reason the Canadian government deliberately shifted the baseline from 1990 (the accepted consensus baseline so comparison can be made easily) to 2006 is that if you calculate what the change from 1990 levels is for the Canadian government proposal, it is actually a small increase, not the 20-25% decrease that is needed to put the world on a stabilization path for <2°C rise in temperature. This is unethical and dishonest, like telling the world that the average Canadian is 4 feet tall (head to knee only). The authors of the report know this is an unacceptably weak proposal and therefore looked at what was actually needed, a 20-25% reduction from 1990 levels. BTW, remember that if someone ever shoots a percentage off for you, ask for the baseline, check if this is standard.

    Incidentally, the editorial pages of the G&M has not read its own report, or wilfully ignores all the good news while selectively playing up the bad news, geez, it’s like they have an agenda or something! The good news:

    • Canada CAN meet its climate goals
    • The effect on Canadian GDP growth is modest. Under the required goal of 25% reduction from 1990, GDP growth is about 3% below “business as usual” standards. Note that this year, GDP growth was negative, what percent is that?
    • Alberta, which would “suffer” the greatest reduction from “business as usual” scenarios still leads the country in growth. This is the scenario which the G&M concern trolls as a threat to National Unity
    • Jobs still grow, very few changes from business as usual scenarios
    • Significant Increases in energy costs. But money flows from carbon revenue to defray some of these costs, so actual costs to consumers are modest
    • Massive increases in the efficiency of cars, houses, heating, etc., means lower prices in the long run

    Of course, the environmental, social and geopolitical costs of “doing nothing” are not enumerated. Are we prepared to face a world with melting polar ice caps, climate refugees, water wars and anger? Are we willing to take those Canadian flags off our backpacks and put Swedish flags on them? There is also a very good chance of incremental breakthroughs in electric vehicle technologies squeezing the demand out of oil and completely collapsing Alberta’s economy, making this entire decision moot. Things can change quickly, just ask anyone involved in the BC timber industry! My point is that unless you factor in the costs of doing business as usual, any change proposed will not compare favourably. The report alludes to the cost of doing business as usual, a 5-20% LOSS in global GDP over the century. But does not include this into the calculation of the business as usual scenario. Note that none of the changes envisaged here propose anything but “growth”.

    The changes required are quite significant.

    • Capture and storage of carbon dioxide from the oil and gas industry and power plants (Ha!)
    • Reduction of “fugitive” emissions from the oil and gas industry and from landfills
    • Increased energy efficiency throughout the economy (e.g., in vehicles and buildings)
    • Increased production of renewable energy (e.g., wind power accounts for 18 per cent of electricity generated in 2020 when meeting the 2°C target)
    • Replacement of fossil fuels by cleaner electricity (e.g., for heating buildings).

    When you are near the bottom of the pack when it comes to efficiency and per capita emissions, you do necessarily have to work a little harder. Most of these goals (except the first one which needs a major technological advance) are easily achievable and would put Canada more in line with European countries as far as energy efficiency goes.

    What do the words of the mainstream media and the government mean? We are screwed. Canada has NO leadership or commitment to steer away from the cliff. We do not have a powerful enough constituency for climate change. We have a government and polity completely captured by oil interests. We will be dragged kicking, screaming and unprepared into a new, efficient and carbon constrained world. We may still turn out okay because we are a VERY rich country with very few people. But, be prepared for the backlash.

    Note, more from the excellent blog greenpolicyprof ‘which makes some of the same points I made, but expands to include coverage of West vs. the Rest issues.

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    Chemical Warfare

    This story from a local Chicago TV station does an excellent job of documenting the chemical weapons dropped on Vietnam by the United States in the 1960s, the effects they still have on Vietnam, and the Americans who handled these so called “defoliants”.

    cbs2chicago.com – Agent Orange: A View From Vietnam

    During the eight years of the Vietnam War that the U.S. Military dusted the Vietnamese landscape with Agent Orange, it was only intended to kill vegetation. It was a combination of two herbicides 2,4D and 2,4,5T mixed together into the most potent plant killer ever made. It was spread over 3 1/2 million acres of forests and crops to kill the trees and vegetation so the United States troops could see the enemy. The Armed Forces were told it was harmless. But in March 1978, Bill Kurtis broke the story on CBS 2 that American veterans of Vietnam who had been exposed to Agent Orange were complaining of illnesses, birth defects among their children, skin rashes, cancer, nervous problems and respiratory problems.

    orange3_small.jpgPeople tend to blame dioxins for all the health effects. But 2,4-D and 2,4,5-T, constituents of Agent Orange, are no spring chickens. Exposure during spraying, especially of the grossly excessive amounts that rained down upon Vietnam, can cause various health effects as well, not to mention long-term devastation of entire ecosystems.

    Side note: New Zealand, in 2004, apologized to New Zealand’s “veterans” for their exposure to Agent Orange during the Vietnam war. Not a word to the Vietnamese, of course.

    Side note 2: A US Federal court, in 2005, dismissed the first claims brought by Vietnamese plaintiffs against Dow Chemicals and Monsanto, here was the government’s  reasoning:

    In a brief filed in January, it said opening the courts to cases brought by former enemies would be a dangerous threat to presidential powers to wage war.

    Translation: We reserve the right to drop chemical weapons on our “enemies”, and doing anything to abrogate this right is “dangerous”.

    Image courtesy of Reuters shows a Vietnamese child, one of many with birth defects associated with Agent Orange exposure.

  • | |

    Colonialism: Environmental Edition

    Does put recycling in context…

    Independent Online Edition > Environment

    Regardless of how carefully you separate your waste, there is a good chance a disposal firm will dump it all in together with other kinds of plastic trash and ship it to the developing world to be dealt with by a family of migrant workers earning a pittance. They will deal with the salad-bar container, the pistachio ice-cream container and the superfluous bag for carrots in your shopping basket in a variety of different ways – it may be recycled, it may become landfill or it may simply be burnt. Whatever happens, it is generally not a priority for the waste disposal company. Britain dumps around two million tonnes of waste in China every year, everything from plastic mineral water bottles to shopping bags and other forms of superfluous packaging from some of the country’s biggest supermarkets.

    Same for India as well. The article says that all of this “recycling” is illegal. But how do you hide 200,000 tonnes of plastic waste?

    Read the whole article, it is tragic. Some highlights:

    So too are the many and varied health complaints suffered by the local population, who risk multiple skin ailments and exposure to potent carcinogens as they touch the contaminated materials. Poisonous chemical effluents stream into their water supply, turning it black or lurid red, and studies by Greenpeace show that acid rain is the norm in this region. Children are prone to fevers and coughs. Their skin is often disfigured by the toxic plastic waste they have to process.

    A report by the University of Shantou on the town of Guiyu, another Guangdong recycling hub, showed that more than 80 per cent of local children suffer from lead poisoning.

  • Canada – No new coal plants?

    For a minute I thought the pain from playing volleyball last night, plus opening my computer up sleepily at 5:45 in the morning before catching an early bus to work had me hallucinating, but yes, the Canadian federal government actually wants to impose a moratorium on the construction of new coal fired power plants unless they include sequestration (which to me means no new power plants).

    The federal government is planning sweeping new climate-change regulations for Canada's electricity sector that will phase out traditional coal-fired power

    Any new coal plants will have to include highly expensive – and unproven – technology to capture greenhouse gas emissions and inject it underground for permanent storage, Environment Minister Jim Prentice said in an interview yesterday.

    Ottawa also plans to impose absolute emission caps on utilities' existing coal-fired power plants and establish a market-based system to allow them to buy credits to meet those targets, Mr. Prentice said.

    via reportonbusiness.com: Ottawa takes aim at coal power.

    I have a certain distrust for this government, so details are crucial. The right things are being said:

    1. All new plants will need sequestration
    2. A cap and trade to deal with existing coal fired power plants
    3. Phase out of facilities after “fully amortized life” – Not clear on exactly what that means
    4. 90% Emissions free power sector by 2025

    As the article points out, Canada relies on coal much less than a lot of other countries, only 18% of current emissions are from coal, as opposed to the US, where about 40% is from coal.

    So, time to celebrate? Not exactly. Canada’s latest release of 2007 data indicates horrendous performance.

    Canada 2007 GHG Inventory

    Overall, total increase was 6 Megatonnes from 2004 to 2007. But the increases from the Tar Sands were nearly 16 Mt, meaning most of Canada’s other sectors saw decreases, thanks to a number of mild winters and greater efficiency.

    Clearly, this performance is going to continue until the Tar Sands are included in any CO2 reduction strategies, whatever we do, or don’t do with the coal will have a little bit of impact, but will definitely not help Canada achieve any of its short or long term goals.

    So, one cheer for this announcement. I suspect that the administration needs something to take to meetings, and is hoping that a coal moratorium will distract people from the biggest culprits, the Tar Sands and our insanely high per capita GHG footprint. A “no new coal” moratorium would be a huge deal in the States, and off the charts in China or India as far as reducing emissions go. But Canada, not bad, but definitely not good enough!

    The Tar Sands will only be stopped when the US steps up to the plate and gets its Cap and Trade going.

  • Good Bye, Clean Water (Act)

    Judith Lewis of the LA Weekly summarizes the issues before the Supreme Court currently debating the Clean Water Act. Among the things she says:

    One state’s boon is another state’s disaster, and it doesn’t much matter whether that state is red or blue: If you’ve seen what happens when your swamps disappear, as they have in Florida, you know why it’s important to protect them.

    In other words, each state is free to screw up its water and then realize too late that they need to protect their wetlands? This points to the insanity that underlies all Federal Environmental Regulation, they are based on the Federal Government’s authority to “Regulate Interstate Commerce” under the Commerce clause of the Constitution. Since Environmental Protection is not mentioned in the Constitution (did they even have indoor plumbing of the non chamber pot variety?), it is considered a state subject unless it affects “commerce”. This can be interpreted either expansively to protect the environment, or Scalialisciously (thank you, the very wonderful Dahlia Lithwick, the only Supreme Court columnist to have her own fan page) to let any one build/dump wherever they please as long as they are not on the banks of the Mississippi! The CWA specifically empowers states to issue permits and it would seem that an successful challenge would really muddy the waters  🙁

    Reading Lithwick’s dispatch leaves me to believe that it’s going to be a close call. Justices Scalia and Roberts seem to be finely parsing language and displaying a contemptuous and obviously fake ignorance of watershed hydrology. Hopefully, the center (Kennedy) will hold, He is a “States Rights” kinda guy, though, which is scary. On the other hand, he likes European Law and Europe is the Queen of classic command and control environmental regulation. Help, I can’t stand the suspense, what do the Vegas lines say???! Here are some of the possible consequences of an unfavorable ruling –

    Under that topsy-turvy interpretation of the landmark 1972 law, more than half of all streams in the United States, as well as one-fifth of all wetlands, would no longer be protected, according to the federal Environmental Protection Agency. And waterways that provide drinking water for more than one in three Americans would be at risk. Nearly 150,000 miles of protected streams in California could be threatened.

    The federal government is arguing for the continuation of the CWA, which I guess is some relief, hope they want to win this one.

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    Coffee Roasting and Popcorn Lung

    Cross-posted from Interrobang

    Who among us coffee drinkers don’t love the smell of freshly roasted coffee? I am sure some of us imagine how much fun it would be to smell freshly roasting coffee more often. I don’t, because smell for me is an instant jolt of pleasure/pain followed by a rather rapid decline into the background.

    Caution, though. New measurements from the US Centres for Disease Control warn of high exposure to some pretty nasty chemicals that can cause your lungs to be destroyed irreversibly, the unfortunately named “popcorn lung” or bronchitis obliterans:

    Investigators with the National Institute of Occupational Safety and Health, a research arm of the CDC, spent several days at Madison-based Just Coffee in July. Investigators tested personal air space and took air samples to measure the concentration of the chemicals diacetyl and 2,3-pentanedione… NIOSH researchers found levels in three breathing-zone samples that exceeded the safety levels recommended by the CDC.

    Coffee Roasting Plants and Exposure

    The test results show a marginal exceedance in this case, but noted that ventilation is a big factor and these tests were done under well ventilated conditions on a warm and dry day when doors were open. So, exposure can be higher in other circumstances.

    Worker exposures are to higher levels, and are more sustained, so they deserve the most attention.

    So, local coffee roasters, it may make sense to confirm that your roasting environments are not exposing your workers to harmful, lung obliterating chemicals. Remember, organic, shade grown, fair pay, artisanal roasting aside, chemical exposures to workers don’t change. And, everything that smells good isn’t good for you.

    One of my frequent points of emphasis (rants, some might say) is on the relative risk vs. media attention to exposures of people to ambient, day to day concentrations of potential harmful chemicals vs. those faced by workers everywhere. The last time diacetyl and bronchitis obliterans were in the news, it was around the use of diacetyl to produce that buttery smell so beloved in microwave bag popcorn (I don’t like it myself, olive oil all the way!). Despite reports of many workers facing severe lung issues, it took the detection of the disease of one person eating multiple bags of microwave popcorn over many years to actually move government regulators into action on diacetyl. People who work in factories, in the fields, and make things are exposed to thousands of times higher concentrations of harmful chemicals for longer periods of time, but their concerns are often de-emphasized.

    This doesn’t mean ambient exposures in the general population are to be ignored, but worker exposures are to higher levels, and more sustained, so they deserve the most attention.

    16-May-2016 Update

    This US Centers for Disease Control page is a good collection of information and further readings. They recommend facility tests to measure diacetyl and its cousin 2,3-pentanedione, and better ventilation, worker safeguards and personal protective equipment as necessary. They also note that at least five workers in large scale coffee processing plants have been diagnosed with bronchitis obliterans.

    Coffee image By Ailura – Own work, CC BY-SA 3.0