Author: Big Gav

  • The Year in Energy

    Technology Review has a roundup of the year’s big news on the energy front, highlighting “Liquid batteries, giant lasers, and vast new reserves of natural gas” (showing a touching amount of faith in the long term future for unconventional natural gas from both a supply point of view and an environmental point of view) – The Year in Energy.

    One of the most dramatic developments (“Natural Gas Changes the Energy Map”) was the rush to exploit a vast new resource; new drilling technologies have made it possible to economically recover natural gas from shale deposits scattered throughout the country, including in Texas and parts of New York, Pennsylvania, and Ohio. Advances in drilling technology have increased available natural gas by 39 percent, according to an estimate released in June. The relatively clean-burning fuel could cut greenhouse gas emissions by becoming a substitute for coal. Natural gas might even provide an alternative to petroleum in transportation, especially for buses and taxis–if only policymakers could take advantage of the new opportunity. …

    This year was also the year of the smart grid, as numerous test projects for improving the reliability of the grid and enabling the use of large amounts of renewable energy got underway (“Technology Overview: Intelligent Electricity”). The smart grid will be enabled by key advances, such as superconductors for high-energy transmission lines (“Superconductors to Wire a Smarter Grid”) and smart networks being developed by companies such as GE (“Q&A: Mark Little, Head of GE Global Research”).

    Cellulosic ethanol–made from biomass such as grass rather than corn grain–moved closer to commercialization, with announcements of demonstration plant openings (“Commercializing Garbage to Ethanol”) and scientific breakthroughs that could make the process cheaper (“Cellulosic Ethanol on the Cheap”). But at the same time, a number of companies are moving beyond cellulosic ethanol to the production of gasoline, diesel, and jet fuel from biomass–fuels that can be used much more readily in existing infrastructure and in existing vehicles. Exxon-Mobil announced substantial investments in algae-based fuels (“Big Oil Turns to Algae”). Remarkably, one startup declared its process–based on synthetic genomics and algae–could allow biofuels to replace all of transportation fuels without overwhelming farmland (“A Biofuel Process to Replace All Fossil Fuels”).

    Still, most people think biofuels will only supply a fraction of our transportation needs (“Briefing: Transportation”). To eliminate carbon emissions and drastically curtail petroleum consumption will require plug-in hybrids (“Driving the Volt”) and other electricity-powered vehicles (“Nissan’s Leaf: Charged with Information”). Advances that could double (or more) the energy capacity of batteries and lower their costs could one day make such vehicles affordable to the masses. These include new formulations such as lithium-sulfur batteries (“Revisiting Lithium-Sulfur Batteries”), metal-air batteries (“High-Energy Batteries Coming to Market”) such as lithium-air batteries (“IBM Invests in Battery Research”), and batteries that rely on nanowires and silicon (“More Energy in Batteries”). A novel concept for super-fast charge stations at bus stops could make electric buses practical (“Next Stop: Ultracapacitor Buses”).

    Getting the electricity to charge these vehicles–without releasing vast amounts of carbon dioxide–could be made easier by a number of advances this year. A new liquid battery could cheaply store energy from wind turbines and solar panels for use when the sun isn’t shining and the wind isn’t blowing (“TR10: Liquid Battery”), making it practical to rely on large amounts of renewable electricity. Vast arrays of mirrors (“Solar Thermal Heats Up”) are being assembled in the desert to convert solar heat into electricity, and photovoltaic solar farms for converting light directly into electricity (“Chasing the Sun”) are getting a boost from the federal stimulus money. And researchers are finding ways to increase the efficiency of solar cells (“More Efficient, and Cheaper, Solar Cells”) and are discovering new photovoltaic materials to make solar power cheaper (“Mining Fool’s Gold for Solar”).


  • Bioplastic: The 8 Percent Solution

    Triple Pundit has a post on the state of play in the bioplastic market – Bioplastic: The 8 Percent Solution.

    The future of plastics once fossil fuels run dry or the price for it becomes too expensive is bioplastics.

    But that alternative future is distant, measured in terms of decades, says Frederic Scheer, chairman, president and founder of Cereplast Inc., a Hawthorne, CA, company that designs and manufactures bio-based, sustainable plastics.

    Which is not to say that bioplastics’ present is particularly shabby: Scheer says that U.S. demand for bioplastics could exceed $10 billion by 2020. That’s a conservative estimate, he contends, but it’s still a “drop in the bucket” compared to the traditional plastic market, which is about $2.5 trillion.

    Scheer may be a visionary and a pioneer when it comes to bioplastics, but he’s also realistic about the challenge and the effort it will take to penetrate and begin to replace the traditional plastic market.

    Referring to a recent 245-page study on the emerging bioplastics market commissioned by European Bioplastics and the European Polysaccharide Network of Excellence, Scheer says, “In 2007, only 0.3 percent of global plastic production was bio-based. By 2013 we expect that overall bioplastics manufacturing capacity will increase by approximately seven times current levels, which still barely taps the surface.”

    But there is no escape, Scheer continues. Traditional plastics “will need to embrace bioplastic” because the price of oil is volatile and will surely increase over time, which increases the pressure to move to bioplastics. “There’s also increasing demand from consumers to use bioplastic.”

    Cereplast’s technology produces bio-based resins, which are little pellets of material used as the building blocks of molded plastic products. They are used to replace nearly all or a significant portion of the petroleum-based additives used in plastics by using natural material from starches such as tapioca, corn, wheat and potatoes.

    In addition to starch-based resins, Cereplast has developed a technology to transform algae into bioplastics and is planning to launch a new family of algae-based resins. Algae have the potential to become a major green feedstock for biofuels and bioplastics.

    There will be a day when bioplastic replaces traditional plastic but that replacement will occur incrementally over a long period of time, say 20-30 years “because we are starting from a low point,” Scheer says. It is an emerging market with plenty of room for growth and new entrants – Cereplast is one of only three major players, the others being Natureworks and Metabolix.


  • Desert Vistas vs. Solar Power

    The New York Times has an article on the scuttling of a raft of large scale solar power projects in the Mojave desert, in the name of “protecting the environment” – Desert Vistas vs. Solar Power.

    Senator Dianne Feinstein introduced legislation in Congress on Monday to protect a million acres of the Mojave Desert in California by scuttling some 13 big solar plants and wind farms planned for the region.

    But before the bill to create two new Mojave national monuments has even had its first hearing, the California Democrat has largely achieved her aim. Regardless of the legislation’s fate, her opposition means that few if any power plants are likely to be built in the monument area, a complication in California’s effort to achieve its aggressive goals for renewable energy.

    Developers of the projects have already postponed several proposals or abandoned them entirely. The California agency charged with planning a renewable energy transmission grid has rerouted proposed power lines to avoid the monument.

    “The very existence of the monument proposal has certainly chilled development within its boundaries,” said Karen Douglas, chairwoman of the California Energy Commission.

    Mrs. Feinstein heads the Senate subcommittee that oversees the budget of the Interior Department, giving her substantial clout over that agency, which manages the government’s landholdings. Her intervention in the Mojave means it will be more difficult for California utilities to achieve a goal, set by the state, of obtaining a third of their electricity from renewable sources by 2020; projects in the monument area could have supplied a substantial portion of that power.

    “This is arguably the best solar land in the world, and Senator Feinstein shouldn’t be allowed to take this land off the table without a proper and scientific environmental review,” said Robert F. Kennedy Jr., the environmentalist and a partner with a venture capital firm that invested in a solar developer called BrightSource Energy. In September, BrightSource canceled a large project in the monument area.


  • Happy New Year

    Peak Energy has (somewhat surprisingly) made it past its 5th birthday.

    While its been an up and down year for me personally and a bit of a slow year here at PE in terms of original content, I’m glad to see there are still plenty of people reading and I’d like to wish you all a happy new year.


  • Nuclear economics just don’t add up

    The SMH has a look at the economics of nuclear power – Nuclear economics just don’t add up.

    In Europe there are two nuclear plants under construction, one in Flamanville, France and one in Olkiluoto, Finland both by France’s state-owned Areva. Both have been subject to significant troubles, partly related to being the first-build of the most evolved advanced model in production, Areva’s EPR, which was supposed to be simpler, more efficient, cheaper and faster to build. In Finland’s Olkiluotu a 50 per cent blowout in costs (to $US6.4 billion so far, lawsuits pending) and doubling in construction time (from 3.5 years to at least seven years) is typical of nuclear projects over the decades. Today Areva concede that construction of a similar reactor of 1.6 gigawatts would be $US8 billion ($A9 billion).

    The reasons why nuclear plants routinely run into such troubles are that it is hugely capital intensive so delays greatly add to the cost of capital long before any revenue is generated. Construction is extremely complex, which is greatly compounded by safety regulation — this was another major cause of the slowdown at Olkiluoto. For these reasons the industry prefers to use “overnight” costs, which are the costs as if a plant was constructed overnight at today’s prices.

    Dr Ziggy Switkowski, chairman of the Australian Nuclear Science and Technology Organisation (ANSTO), has said that Australia should build 50 reactors though this assumes a doubling of electricity consumption by 2050. Dr Ian Smith suggested, when chief executive of ANSTO in 2008, that Australia could realistically construct six to 14 plants but this would still provide only 10-20 per cent of total electricity requirements.

    Australia’s current electricity consumption is almost 40 gigawatts from installed capacity of about 50 gigawatts. So, to replace most of this would require about 25 reactors of the EPR design, each of 1.6 gigawatts (or 40 of the Westinghouse AP1000 1 gigawatt design). This could cost about $225 billion in today’s money, or close to half a trillion dollars for 50 reactors. Using Smith’s more modest suggestions the cost could be up to $126 billion but displace a lot less coal burning. Switkowski may be correct in the sense that why create all these contentious issues and still not substantially solve the problem? This points to another weakness: with nuclear it appears to be an all-or-nothing gamble with hundreds of billions of dollars.

    Nuclear advocates always cite “next-gen” designs and purported much swifter and cheaper construction but the figures given above are the actual costs of the plants being constructed in Europe today, not even the much higher industry estimates reported by Grunwald for the proposed US plants. The timetable of this construction is anyone’s guess except that history warns us to be pessimistic. By comparison China plans for 50-60 of the simpler, smaller Westinghouse design by 2030, but nuclear will still account for only about 4 per cent of their energy needs.

    Those are just the construction costs. As is well known, liability insurance needs to be covered by government. The other big cost is the decommissioning of reactors. Even with many of the world’s 439 existing reactors approaching the end of their productive lives, so far none have been decommissioned. The world’s first commercial nuclear power generator, Calder Hall at what is now called Sellafield (previously Windscale), was turned off in 2003. It has been estimated by the UK industry that full decommissioning of Calder Hall, if ever done, will cost about $2 billion at today’s prices. Meanwhile, old plants need continuous maintenance and high-security against decay and incursion including against potential terrorists.

    But the biggest cost, especially for Australia, could be the opportunity cost of throwing these vast sums into an old technology dominated by other countries, rather than investing in new renewable technologies and industries of the future. From relatively modest funding Australia has already produced world-beating solar-photovoltaic and solar-thermal technologies, even if both have moved offshore due to lack of investment support. Geothermal power has just received government grants, which will allow full prototypes to be tested in a few years. Many scientists believe that it is inevitable that these technologies will be viable, provide so-called baseload power cost-competitively, and that their maturation would be faster than the typical construction schedules of nuclear power stations if comparable budgets and subsidies were deployed.

    Is this any different to the claims by the nuclear dreamers such as Brook and Nicholson? Emphatically yes. The nuclear industry is not a new one but an old mature one. For more than 50 years it has consistently over-promised and under-delivered, yet its advocates continue to propose that governments should provide massive subsidies to nuclear construction, provide unlimited liability insurance, assume most of the decommissioning costs and — after 50 years — continue to search for the elusive “permanent” storage of high-level waste.

    There are not minority views and indeed are not contested by the nuclear industry, or the Wall Street Journal, or Lazards the merchant bank. Or many scientists. Here is commentary from the world’s top science journal Nature (W.Patterson, Vol 449, 11/10/07): “As climate and fuel security dominate the energy agenda, the battle between traditional and innovative electricity intensifies around the world, notably in fast-growing economies such as China. After half a century, nuclear power is the ultimate in tradition. It needs climate more than climate needs it. To avert catastrophic global warming, why pick the slowest, most expensive, most limited, most inflexible and riskiest option? In 1957, despite the Windscale fire, nuclear power was worth trying. We tried it: its weakness proved to be economics, not safety. Now nuclear generation is just an impediment to sustainable electricity.”

    It is a clear enough choice. The economics and the long time to approve and build show nuclear is not the smart choice, arguably for the world but certainly not for Australia with its plentiful resources in renewables (solar, wind, wave, tidal, geothermal).

    The real question for Australia is whether we have what it takes to grasp the opportunities.


  • Surviving Cueva de los Cristales – The Giant Crystal Cave

    Off-topic but interesting and some great pictures – The Deadliest place on Earth? Surviving Cueva de los Cristales – The Giant Crystal Cave.


  • NZ Methane Hydrates May “Soon Be Developed”

    Rigzone has an article about high hopes for a methane hydrates development offshore from New Zealand (in an area where a wind farm would probably achieve as high a utilisation rate as you’d find anywhere in the world, I’d note) – NZ Methane Hydrates May Soon Be Developed.

    A gas industry using frozen gas hydrates below the seabed off the East Coast could be developed in the near future thanks to rapid global technical developments.

    George Hooper, executive director of the Centre for Advanced Engineering, told a recent Oil and Gas conference in Wellington that exploitation of methane hydrates could transform New Zealand’s energy market.

    Hooper is lead author in a recent CAE report on an options analysis for commercial development of energy from offshore methane hydrates in New Zealand.

    He said ‘sweet spots’ containing high concentrations (about 4-10%) of methane hydrate found in sheets under the seabed off the East Coast may contain about 8.5 – 21 trillion cubic feet (TCF) of recoverable gas.

    He said New Zealand’s methane hydrates endowment is very likely the largest in the world on a per capita basis and potentially one of the largest resources in the world.

    Inferred resources of hydrates in New Zealand are 813 TCF with 40 TCF identified as potentially economically recoverable. Inferred world resources of hydrates are 20,000 TCF.

    The ice-like crystals of water and methane molecules intermixed with sediments are found over 50,000 sq km from offshore Marlborough to offshore Gisborne, as well as off Fiordland.

    A number of countries were now working on developing commercial gas production from hydrates including Japan, India, the US and South Korea. Japan was talking of a 2015 timeline for first production, though this might be optimistic, Hooper said.

    He anticipates rapid progress in the engineering geology and production technologies required for hydrates extraction, both internationally and in New Zealand.

    This demanded a considerable ramp-up of hydrate research and development effort here to ensure New Zealand has the earliest possible opportunity to develop its hydrate resources and associated skills.

    A conceptual well development plan for a known Wairarapa hydrates ‘sweet spot’ site offshore Wairarapa, east of Wellington, was prepared for the study.

    Costings for a small scale 10 petajoule a year ‘proving’ project indicated this option would require capital expenditure of $370 million.

    To produce 150 PJ of gas, equal to the entire New Zealand gas market, the capital expenditure would be about $4 billion, about twice the $2 billion capital spending required to produce a similar volume of conventional natural gas.

    The cost of building a 300 PJ project both for domestic gas use and for the export of LNG, would cost about $8 billion.


  • Managing the Peak Fossil Fuel Transition: EROI and EIRR

    The Oil Drum has a post from Tom Konrad looking at the concepts of EROI and EIRR and how they impact the transition to a post-oil world – Managing the Peak Fossil Fuel Transition: EROI and EIRR.

    Energy keeps our economy running. Energy is also what we use to obtain more energy. The more energy we use to obtain more energy, the less we have for the rest of the economy.

    The concept of Energy Return on Investment (EROI), alternatively called Energy Return on Energy Invested (EROEI) has been widely used to quantify this concept. The following chart, from a SciAm paper, shows the EROI of various sources of energy, with the tan section of the bar representing the range of EROIs depending on the source and the technology used. I’ve seen many other estimates of EROI, and this one seems to be on the optimistic (high EROI) end for most renewable energy sources.

    The general trend is clear: the energy of the future will have lower EROI than the energy of the past. Low carbon fuels such as natural gas, nuclear, photovoltaics, wind, and biofuels have low EROI compared to high-carbon fuels such as coal and (formerly) oil.

    The graph also clearly shows the decline in the EROI over time for oil. Other fossil fuels, such as coal and natural gas, also will have declining EROI over time. This happens because we always exploit the easiest resources first. The biggest coal deposits that are nearest to the surface and nearest to customers will be the first ones we mine. When those are depleted, we move on to the less easy to exploit deposits. The decline will not be linear, and new technology can also bring temporary improvements in EROI, but new technology cannot change the fact that we’ve already exploited all the easiest to get deposits, and new sources and technologies for extracting fossil fuels often fail to live up to the hype.

    While there is room for improvement in renewable energy technologies, the fact remains that fossil fuels allow us to exploit the energy of millions of years of stored sunlight at once. All renewable energy (solar, wind, biomass, geothermal) involves extracting a current energy flux (sunlight, wind, plant growth, or heat from the earth) as it arrives. In essence, fossil fuels are all biofuels, but biofuels from plants that grew and harvested sunlight over millions of years. I don’t think that technological improvements can make up for the inherent EROI advantage of the many-millions-to-one time compression conveys to fossil fuels.

    Hence, going forward, we are going to have to power our society with a combination of renewable energy and fossil fuels that have EROI no better than the approximately 30:1 potentially available from firewood and wind. Since neither of these two fuels can come close to powering our entire society (firewood because of limited supply, and wind because of its inherent variability.) Also, storable fuels such as natural gas, oil, and biofuels all have either declining EROI below 20 or extremely low EROI to begin with (biofuels). Energy storage is needed to match electricity supply with variable demand, and to power transportation.


  • Australian Academy of Science: Australia’s Renewable Energy Future

    The Australian has an article on a forthcoming report by the Australian Academy of Science on renewable energy – Green power feasible.

    The report, titled Australia’s Renewable Energy Future, puts the scientific might of the academy up against sceptics claiming that renewables cannot meet baseload energy needs.

    It challenges assumptions underlying an economic model of renewable energy take-up developed by the CSIRO and the Australian Bureau of Agricultural and Resource Economics on the grounds they are too conservative. In the virtual futures generated in the modelling, geothermal and solar thermal would remain as only minor components in Australia’s energy mix until 2040.

    The model could not capture recent technological advances and the stimulatory impact of government intervention, Professor Dopita said. In the real world, it risked becoming a self-fulfilling prophecy, helping to reinforce a focus on fossil fuel in policy formulation.

    “We can change the way we do business entirely by stimulating those new industries, getting them past the economic thresholds that make them appear to be uncompetitive with coal,” he said. “If you give the appropriate financial incentives early on, the whole thing snowballs. As the technology accrues the advantages of scale, it becomes self-sustaining and provides new employment and export opportunities.”

    The academy estimates Australia has enough accessible geothermal energy to meet 26,000 years of its power needs. More than 30 companies aim to deliver geothermal energy to the grid, the renewable energy report says.

    However, the accessible geothermal resource is concentrated in granite formations in the outback. To cut energy losses in getting the hot rock power to the cities, the government would need to invest billions of dollars in a high-voltage direct current long-distance electricity transmission system.


  • Glitter-sized solar photovoltaics produce competitive results

    PhysOrg has an article on “glitter-sized photovoltaic cells that could revolutionize the way solar energy is collected and used” from Sandia Labs – Glitter-sized solar photovoltaics produce competitive results.

    Sandia lead investigator Greg Nielson said the research team has identified more than 20 benefits of scale for its microphotovoltaic cells. These include new applications, improved performance, potential for reduced costs and higher efficiencies.

    “Eventually units could be mass-produced and wrapped around unusual shapes for building-integrated solar, tents and maybe even clothing,” he said. This would make it possible for hunters, hikers or military personnel in the field to recharge batteries for phones, cameras and other electronic devices as they walk or rest.

    Even better, such microengineered panels could have circuits imprinted that would help perform other functions customarily left to large-scale construction with its attendant need for field construction design and permits.

    Said Sandia field engineer Vipin Gupta, “Photovoltaic modules made from these microsized cells for the rooftops of homes and warehouses could have intelligent controls, inverters and even storage built in at the chip level. Such an integrated module could greatly simplify the cumbersome design, bid, permit and grid integration process that our solar technical assistance teams see in the field all the time.”

    For large-scale power generation, said Sandia researcher Murat Okandan, “One of the biggest scale benefits is a significant reduction in manufacturing and installation costs compared with current PV techniques.”

    The Guardian reports on a large new solar thin film and PV factory being built by LG – LG Electronics to enter increasingly crowded solar market.

    The growing attractiveness of the global solar energy market was underlined this week when South Korea’s LG Electronics (LG) announced that it is to start commercial production of solar cells and modules next month.

    The company said that it plans to manufacture approximately 520,000 solar modules a year using silicon wafers, at a plant 200 kilometres to the south east of Seoul with a total capacity of 120MW.

    LG said that it planned to set up another production line for operation by 2011, increasing total output to 240MW.

    Kwan-shik Cho, vice president of the solar business team at LG Electronics, explained that the goal is to become a global player in the world’s solar industry.

    “While we recognise this is a crowded playing field, LG has the necessary skills, know-how and business strategy to make this a profitable venture for the long-term,” he said.

    LG sees the solar business as a key area of growth, and claimed that it had been preparing to enter the market since 2004.

    The firm will manufacture large-area thin-film solar cells, as well as the more widespread crystalline solar cells.

    In July 2009, LG announced that the company had achieved the world’s most energy efficient large-area thin-film solar cells in a trial.

    Technology Review reports that Applied Materials is also focusing on the solar market, and moving production to China – Applied Materials Moves Solar Expertise to China.

    The world’s biggest supplier of solar-manufacturing equipment has opened a research and development center in China, and its chief technology officer will relocate from Silicon Valley to that country next month. Applied Materials, founded in 1967 as a semiconductor company, has manufactured in China for 25 years, but is expanding its presence to be closer to its customers and develop products suited to the country’s urban population.

    “We’re doing R&D in China because they’re becoming a big market whose needs are different from those in the U.S.,” says Mark Pinto, Applied Materials’s CTO. Going forward, he says, “energy will become the biggest business for the company,” and China, not the U.S., “will be the biggest solar market in the world.”

    Indeed, the move by Applied Materials is just the latest sign that China is rapidly moving to the forefront in adopting renewable energy technologies. China is no model for addressing climate change–its greenhouse-gas emissions are expected to nearly double by 2030. The lion’s share of demand for photovoltaics comes from Europe, which accounted for 82 percent of the photovoltaics sold in 2008, according to a report by Solarbuzz. China currently makes up less than 1 percent of the demand for photovoltaics, but its demand for photovoltaics is expected to grow; Beijing aims to produce 20,000 megawatts of solar energy by 2020.


  • A Quantum Leap in Battery Design

    Technology Review has an article on (at this stage theoretical) ultra-high performance “Digital quantum batteries” – A Quantum Leap in Battery Design.

    A “digital quantum battery” concept proposed by a physicist at the University of Illinois at Urbana-Champaign could provide a dramatic boost in energy storage capacity–if it meets its theoretical potential once built.

    The concept calls for billions of nanoscale capacitors and would rely on quantum effects–the weird phenomena that occur at atomic size scales–to boost energy storage. Conventional capacitors consist of one pair of macroscale conducting plates, or electrodes, separated by an insulating material. Applying a voltage creates an electric field in the insulating material, storing energy. But all such devices can only hold so much charge, beyond which arcing occurs between the electrodes, wasting the stored power.

    If capacitors were instead built as nanoscale arrays–crucially, with electrodes spaced at about 10 nanometers (or 100 atoms) apart–quantum effects ought to suppress such arcing. For years researchers have recognized that nanoscale capacitors exhibit unusually large electric fields, suggesting that the tiny scale of the devices was responsible for preventing energy loss. But “people didn’t realize that a large electric field means a large energy density, and could be used for energy storage that would far surpass anything we have today,” says Alfred Hubler, the Illinois physicist and lead author of a paper outlining the concept, to be published in the journal Complexity.

    Hubler claims the resulting power density (the speed at which energy can be stored or released) could be orders of magnitude greater, and the energy density (the amount of energy that can be stored) two to 10 times greater than possible with today’s best lithium-ion and other battery technologies.


  • PG&E takes another shot at wave power

    Cleantech.com reports that Californian utility PG&E is investigating a 100 MW wave power project – PG&E takes another shot at wave power.

    San Francisco’s Pacific Gas & Electric said today it filed a filed a preliminary permit application with the Federal Energy Regulatory Commission (FERC) for a three-year study of a potential wave power site with a capacity of up to 100 megawatts off the coast of northern Santa Barbara County.

    If the study is successful, the utility proposes the installation of wave energy conversion devices that would feed into the electrical grid at Vandenberg Air Force Base. PG&E said it already signed an agreement with the U.S. Air Force to allow it to conduct the study.

    PG&E has received approval from FERC to conduct environmental studies of a potential wave power site off the coast of Humboldt County. The utility says it plans to give a maximum of four wave energy converter (WEC) manufacturers the chance to test their devices.

    The five-year trial is expected to be installed in fall 2013.


  • 97% of active climatologists agree that human activity is causing global warming

    Tim Lambert has a post on the scientific consensus about global warming – 97% of active climatologists agree that human activity is causing global warming.

    Eos has just published the results of a survey of 3146 Earth Scientists conducted by Peter Doran and Maggie Kendall Zimmerman. The graph below shows the results for this question:

    Do you think human activity is a significant contributing factor in changing mean global temperatures?

    The 97% of active climatologists is 75 out of the 77 in the survey. Doran and Zimmermann say:

    While respondents’ names are kept private, the authors noted that the survey included participants with well-documented dissenting opinions on global warming theory.

    I’m guessing that Lindzen and Spencer are the two that said “no”.

    The difference between the opinion of the general public and the scientists is striking. For comparison, despite the ongoing efforts of right-wing pundits here, 80% of Australians answered “yes” to a similar question.


  • Jenga-Like Building Provides Optimum Sunshine

    Green Building of the week from Inhabitat is this Chinese tower – SAKO Architects’ Jenga-Like Building Provides Optimum Sunshine.

    What’s black and white and sunny all over? It’s the BUMPS housing complex in Beijing, created by SAKO Architects. Typical buildings in China face north and south, but SAKO’s design rotates the buildings 45 degrees from the north-south axis to provide maximum exposure to sunlight. The designers also staggered the two-floor units to create additional space between the units, which tenants can then use as terraces. The integrated project, which includes both residential and commercial buildings, is located in a developing area in southwest Beijing and was one of this month’s WAN Awards residential category entries.

    Also from Inhabitat, this nice looking biomass power plant in the UK (though the “greenness” of biomass based power itself is debatable) – New Biomass Plant for the UK Looks Like a Giant Green Volcano

    The United Kingdom is splattered with fossil fuel based power plants and concrete cooling towers which are major carbon producers as well as eyesores. Luckily, plans for a new biomass power plant covered in native grasses in the UK have just been released and they will complement the surrounding ecology as well as decrease carbon emissions by 80% compared to coal or gas fired power stations. Designed by Thomas Heatherwick, a London-based firm, the 49.3 MW power plant located on the banks of the River Tees will be a man-made mountain covered in plants and will certainly be a welcome replacement to the older, pollution-spewing plants around the country.

    Powered by palm kernel shells, which are the byproducts of palm oil plantations, the plant will reduce carbon emissions by 80% compared to traditional coal or gas fired stations. The palm kernel shells, considered a renewable fuel, will be delivered directly by boat, eliminating the need to haul the fuel by truck. The 49 MW plant will provide enough power for 50,000 homes, providing cleaner, lower carbon baseload power for the region. Inside, the power plant will also contain offices, a visitors’ center and an education resource center for renewable energy.


  • Copenhagen: Things Fall Apart and an Uncertain Future Looms

    Yale 360 has an article from Bill McKibben on the failed talks at Copenhagen, saying the “summit turned out to be little more than a charade” – Copenhagen: Things Fall Apart and an Uncertain Future Looms.

    It’s possible that human beings will simply never be able to figure out how to bring global warming under control — that having been warned about the greatest danger we ever faced, we simply won’t take significant action to prevent it. That’s the unavoidable conclusion of the conference that staggered to a close in the early hours of Saturday morning in Copenhagen. It was a train wreck, but a fascinating one, revealing an enormous amount about the structure of the globe.

    Let’s concede first just how difficult the problem is to solve — far more difficult than any issue the United Nations has ever faced. Reaching agreement means overcoming the most entrenched and powerful economic interests on Earth — the fossil fuel industry — and changing some of the daily habits of that portion of humanity that uses substantial amounts of oil and coal, or hopes to someday soon. Compared to that, issues like the war in Iraq, or nuclear proliferation, or the Law of the Sea are simple. No one really liked Saddam Hussein, not to mention nuclear war, and the Law of the Sea meant nothing to anyone in their daily lives unless they were a tuna.

    Faced with that challenge, the world’s governments could have had a powerful and honest conversation about what should be done. Civil society did its best to help instigate that conversation. In late October, for instance, 350.org — the organization of which I am a founder — held what CNN called the “most widespread day of political action in the planet’s history,” with 5,200 demonstrations in 181 countries all focused on an obscure scientific data point: 350 parts per million (ppm) of CO2, which NASA scientists have described as the maximum amount of carbon we can have in the atmosphere if we want a planet “similar to the one on which civilization developed, and to which life on Earth is adapted.”

    In fact, that kind of scientific reality informed the negotiations in Copenhagen much more thoroughly than past conclaves — by midweek diplomats from much of the world were sporting neckties with a big 350 logo, and 116 nations had signed on to a resolution making that the dividing line. A radical position? In one sense, yes — it would take the quick transition away from fossil fuels to make it happen. But in another sense? The most conservative of ideas, that you might want to preserve a planet like the one you were born onto.

    From the beginning, the most important nations chose not to go the route of truth-telling. The Obama administration decided not long after taking office that they would barely mention “global warming,” instead confining themselves to talking about “green jobs” and “energy security.” Perhaps they had no choice, and it was the only way to reach the U.S. Senate — we’ll never know, because they clung to their strategy tightly. On Oct. 24, when there were world leaders from around the globe joining demonstrations, they refused to send even minor officials to take part. Instead, they continued to insist on something that scientists kept saying was untrue: The safe level of carbon in the atmosphere was 450 ppm, and their plans would keep temperature from rising more than 2 degrees Celsius (3.6 F) and thus avoid “catastrophic consequences.” (Though since 0.8 degrees C had melted the Arctic, it wasn’t clear how they defined catastrophe).

    In any event, even this unambitious claim was a sham. That’s strong language, so here’s what I mean. Thirty-six hours before the conference drew to a close, a leaked document from the UN Secretariat began circulating around the halls. It had my name scrawled across the front, not because I’d leaked it but apparently because it confirmed something I’d been writing for weeks here at Yale Environment 360 and elsewhere: Even if you bought into the idea that all we needed to do was keep warming to 2 degrees C and 450 ppm, the plans the UN was debating didn’t even come close. In fact, said the six-page report, the plans on offer from countries rich and poor, if you added them all up, would produce a world where the temperature rose at least 3 degrees C, and carbon soared to at least 550 ppm. (Hades, technically described). It ended with a classic piece of bureaucratic prose: Raising the temperature three degrees, said the anonymous authors, would “reduce the probability” of hitting the two degree target. You think?

    The document helped make already-suspicious vulnerable nations even more suspicious. Remember: The reports from the Intergovernmental Panel on Climate Change have made it clear that a two-degree temperature rise globally might make Africa 3.5 degrees C hotter. Almost everyone

    The most vulnerable nations didn’t knuckle under quite as easily as usual.

    thinks that even 450 ppm will raise sea level enough to drown small island nations. There wasn’t much solace in the money on offer: $10 billion in “fast start” money for poor nations (about $2.50 a head — I’d like to buy the world a Coke) and an eventual $100 billion in annual financial aid that U.S. Secretary of State Hillary Clinton promised when she arrived on Thursday morning. Even if that money ever materialized (Clinton couldn’t say where it would come from, except “special alternative financial means”) it wouldn’t do much good for countries that weren’t actually going to exist once sea levels rose. They were backed to the wall.

    And so, they squawked. They didn’t knuckle under quite as easily as usual, despite the usual round of threats and bribes. (One island nation left a meeting with the U.S. fearing for its International Monetary Fund loans; one African nation left a meeting with the Chinese hoping for two new hospitals if only it would toe the line.)

    This annoyed the powerful. When President Obama finally appeared on Friday, his speech to the plenary had none of the grace and sense of history that often mark his words — it was an exasperated and tight-lipped little dressing-down about the need for countries to take “responsibility.” (Which might have gone over better if he’d even acknowledged that the United States had some special historical responsibility for the fix we’re in, but the U.S. negotiation position all along has been that we owe nothing for our past. As always, Americans are eager for a fresh new morning). In any event, it didn’t suffice — other nations were still grumbling, and not just the cartoonish Hugo Chavez.

    In fact, the biggest stumbling block to the kind of semi-dignified face-saving agreement most people envisioned was China. According to accounts I’ve heard from a number of sources, Obama met with 25 other world leaders after his press conference for a negotiating session. It was a disaster — China turned down one reasonable idea after another, unwilling to constrain its ability to burn coal in any meaningful way (and not needing to, since power, especially in any non-military negotiation, has swung definitively in its direction).

    Mark Lynas has a column in The Guardian blaming the Chinese for the failure of the summit – How do I know China wrecked the Copenhagen deal? I was in the room.

    Copenhagen was a disaster. That much is agreed. But the truth about what actually happened is in danger of being lost amid the spin and inevitable mutual recriminations. The truth is this: China wrecked the talks, intentionally humiliated Barack Obama, and insisted on an awful “deal” so western leaders would walk away carrying the blame. How do I know this? Because I was in the room and saw it happen.

    China’s strategy was simple: block the open negotiations for two weeks, and then ensure that the closed-door deal made it look as if the west had failed the world’s poor once again. And sure enough, the aid agencies, civil society movements and environmental groups all took the bait. The failure was “the inevitable result of rich countries refusing adequately and fairly to shoulder their overwhelming responsibility”, said Christian Aid. “Rich countries have bullied developing nations,” fumed Friends of the Earth International.

    All very predictable, but the complete opposite of the truth. Even George Monbiot, writing in yesterday’s Guardian, made the mistake of singly blaming Obama. But I saw Obama fighting desperately to salvage a deal, and the Chinese delegate saying “no”, over and over again. Monbiot even approvingly quoted the Sudanese delegate Lumumba Di-Aping, who denounced the Copenhagen accord as “a suicide pact, an incineration pact, in order to maintain the economic dominance of a few countries”.

    Sudan behaves at the talks as a puppet of China; one of a number of countries that relieves the Chinese delegation of having to fight its battles in open sessions. It was a perfect stitch-up. China gutted the deal behind the scenes, and then left its proxies to savage it in public.

    Here’s what actually went on late last Friday night, as heads of state from two dozen countries met behind closed doors. Obama was at the table for several hours, sitting between Gordon Brown and the Ethiopian prime minister, Meles Zenawi. The Danish prime minister chaired, and on his right sat Ban Ki-moon, secretary-general of the UN. Probably only about 50 or 60 people, including the heads of state, were in the room. I was attached to one of the delegations, whose head of state was also present for most of the time.

    What I saw was profoundly shocking. The Chinese premier, Wen Jinbao, did not deign to attend the meetings personally, instead sending a second-tier official in the country’s foreign ministry to sit opposite Obama himself. The diplomatic snub was obvious and brutal, as was the practical implication: several times during the session, the world’s most powerful heads of state were forced to wait around as the Chinese delegate went off to make telephone calls to his “superiors”.

    Shifting the blame

    To those who would blame Obama and rich countries in general, know this: it was China’s representative who insisted that industrialised country targets, previously agreed as an 80% cut by 2050, be taken out of the deal. “Why can’t we even mention our own targets?” demanded a furious Angela Merkel. Australia’s prime minister, Kevin Rudd, was annoyed enough to bang his microphone. Brazil’s representative too pointed out the illogicality of China’s position. Why should rich countries not announce even this unilateral cut? The Chinese delegate said no, and I watched, aghast, as Merkel threw up her hands in despair and conceded the point. Now we know why – because China bet, correctly, that Obama would get the blame for the Copenhagen accord’s lack of ambition.

    China, backed at times by India, then proceeded to take out all the numbers that mattered. A 2020 peaking year in global emissions, essential to restrain temperatures to 2C, was removed and replaced by woolly language suggesting that emissions should peak “as soon as possible”. The long-term target, of global 50% cuts by 2050, was also excised. No one else, perhaps with the exceptions of India and Saudi Arabia, wanted this to happen. I am certain that had the Chinese not been in the room, we would have left Copenhagen with a deal that had environmentalists popping champagne corks popping in every corner of the world. …

    This does not mean China is not serious about global warming. It is strong in both the wind and solar industries. But China’s growth, and growing global political and economic dominance, is based largely on cheap coal. China knows it is becoming an uncontested superpower; indeed its newfound muscular confidence was on striking display in Copenhagen. Its coal-based economy doubles every decade, and its power increases commensurately. Its leadership will not alter this magic formula unless they absolutely have to.

    Copenhagen was much worse than just another bad deal, because it illustrated a profound shift in global geopolitics. This is fast becoming China’s century, yet its leadership has displayed that multilateral environmental governance is not only not a priority, but is viewed as a hindrance to the new superpower’s freedom of action.


  • UK Geothermal power plant gets funds

    Even the British seem to be getting enthusiastic about geothermal energy, with the BBC reporting on a project planned for Cornwall – Geothermal power plant gets funds .

    Plans to develop the UK’s first commercial-scale geothermal power station in Cornwall have secured nearly £1.5m of government funding.

    The power plant – using “hot rocks” technology – is to be based at Redruth and would provide electricity and heat for homes and businesses.

    Geothermal Engineering Ltd (GEL) has gained the grant from the Department of Energy and Climate Change. The total cost of building the plant will be about £40m.

    The power plant will work by pumping water deep underground to be warmed by the earth’s natural heat and then returned to the surface. The heated water would power turbines, generating electricity and heat.


  • World’s Largest Solar Energy Office Building Opens in China

    Green building of the week from Inhabitat is this solar PV encrusted office building in China – World’s Largest Solar Energy Office Building Opens in China.

    A vast fan-shaped compound in China has officially taken the title of “largest solar-powered office building in the world“. Located in Dezhou in the Shangdong Province in northwest China, the 75,000 square meter structure is a multi-use building and features exhibition centers, scientific research facilities, meeting and training facilities, and a hotel – all of which run on solar power.

    The design of the new building is based on the sun dial and “underlines the urgency of seeking renewable energy sources to replace fossil fuels.” Aside from the obvious sustainable nature of the solar panel – clad exterior, other green features include advanced roof and wall insulation practices resulting in an energy savings of 30% more than the national standard. In addition, the external structure of the building used a mere 1% of the amount of steel used to construct the Bird’s Nest.


  • Hot Electrons

    Technology Review has an article on research into improving solar PV cell efficiency at Boston College – Hot Electrons Could Double Solar Power.

    For decades researchers have investigated a theoretical means to double the power output of solar cells–by making use of so-called “hot electrons.” Now researchers at Boston College have provided new experimental evidence that the theory will work. They built solar cells that get a power boost from high-energy photons. This boost, the researchers say, is the result of extracting hot electrons.

    The results are a step toward solar cells that break conventional efficiency limits. Because of the way ordinary solar cells work, they can, in theory, convert at most about 35 percent of the energy in sunlight into electricity, wasting the rest as heat. Making use of hot electrons could result in efficiencies as high as 67 percent, says Matthew Beard, a senior scientist at the National Renewable Energy Laboratory in Golden, CO, who was not involved in the current work. Doubling the efficiency of solar cells could cut the cost of solar power in half.


  • Spain’s variable wind and stable electricity networks

    Carbon Commentary has an excellent article on how renewables can provide large amounts of electricity into an electrical grid – in this case Spain’s – (Spain’s variable wind and stable electricity networks. Yet if you listened to some people spouting PR for the nuclear power industry, you’d believe this is impossible.

    One of the frequent criticisms of wind energy is that national distribution systems (‘the grid’) cannot cope with large number of turbines because of the variability and unpredictability of their output. Grids need to match supply and demand precisely, the critics say, and because wind varies so much it causes huge problems. Recent data from two meteorologically unusual days in Spain – the world leader in the management of renewable energy supplies – shows this assertion is almost certainly false.

    * During part of 8 November, Spain saw over 50% of its electricity come from turbines as an Atlantic depression swept over the country’s wind parks. (They are so big that no one seems to call them ‘farms’.) Unlike similar times in November 2008, when Spanish turbines were disconnected because the grid had an excess of electricity, the system accepted and used all the wind power that was offered to it.
    * A very different event in January of this year saw unexpectedly high winds shut down most of the country’s turbines with little warning. The grid coped with this untoward incident as well. These two events show that a well run transmission system can cope with extreme and unexpected events even with a large fraction of power provided by wind.

    Over the course of this year Spain will generate about 14% of its total electricity from wind and this number is likely to rise to the high twenties by 2020. Spain is showing the rest of the world that these figures are not incompatible with grid stability. Although wind is ‘variable’, ‘intermittent’ and ‘unpredictable’, a well functioning grid system can still use wind to help stabilise electricity costs, reduce carbon emissions and improve energy security.

    At some periods on the night of 8/9 November, wind provided 53% of Spain’s need for electricity. This was a new record for the Spanish system. As the country continues to install thousands of new wind turbines a year, this record will not stand for long.

    Although Denmark has had similar percentages of its electricity provided by wind, the Spanish numbers are particularly significant. As its electricity transmission company, Red Eléctrica de España or REE, reminds us, the country is unusually isolated from international interconnections. It is ‘a peninsula electrically speaking, with weak electrical interconnections with the European Union’.[1] A country with limited capacity to import or export power has more issues accommodating large amounts of wind power. Denmark has international connections to cover 50% of its electricity while Spain has less than a tenth this amount. (The UK also scores extremely poorly on this dimension.)

    Spain is able to manage the integration of wind power into its grid primarily because it has reasonable amounts of hydro-electricity and pumped storage.[2] Hydro-electricity can be used when winds are less than expected and pumped storage can assist both when wind is unexpectedly high or unexpectedly low.

    One of the main criticisms levelled at wind is that its power is so unpredictable that huge amounts of fossil fuel generating capacity needs to be kept ready to replace it at a moment’s notice. Those antagonistic to wind believe that the carbon cost of keeping power stations in a state of what the industry calls ‘spinning reserve’ is enormous. Power stations, they say, are burning fuel so that they can instantaneously start producing electricity if and when the wind drops.

    But is wind so variable that power stations need to provide immediate backup? The utterly superb REE website provides easy-to-use data to test this theory. I’ve used this data to try to demonstrate that wind production was remarkably consistent during the peak day of 8 November.[3] Not only is wind speed largely predictable with good meteorology, but REE data shows that even in the windy days of early November, the amount of electricity generated only varied gradually.

    During this 24-hour period the total generated varied from about 9.3 gigawatts (9,300 megawatts) at the start, to a peak of around 11.5 gigawatts at about 14.30 in the afternoon. For most of the day, the wind output was very stable around 10 gigawatts. (The wind output estimate is provided every ten minutes on the REE website.) The mean percentage variation from one reading to the next was 0.72%. On only three occasions out of 143 observations did the output vary more than 2% between two readings.

    When the wind is blowing strongly, any local variations in wind speeds tend to be balanced out by compensating changes elsewhere. A country like Spain, with over ten thousand turbines spread across a large landmass, will have low variability of electricity output from wind. As a country adds wind turbines, the degree of variability in electricity output will tend to fall. In Spain, the variations on 8/9 November represented no threat to the stability of the electricity system, even when wind was meeting half of total power demand.


  • Life in Garbage City

    TreeHugger has a post on an Egyptian urban area specialising in lo-tech recycling – Photographers Capture Life in Garbage City.

    Outside Egypt’s capital, in the shadow of the Pyramids and tucked in the mountains of Mokattam, is an incredible city that literally survives on trash. Garbage City, as it’s known, is home to 30,000 Zabaleens – Coptic Christians from southern Egypt – who, each day, enter Cairo and collect its waste. 60 percent of the trash produced in Cairo passes through Garbage City to be recycled. It is an amazing sight, awash in refuse.

    Recently, photographers Bas Princen, Klavs Bo Christensen and Alexander Heilner visited Garbage City and returned with some captivating images that depict the close, day-to-day relationship between the Zabaleens and the garbage. Piles of the stuff are virtually everywhere, a fact that these recyclers-by-trade seem none too concerned with.

    The garbage collecting process is so organized, Cairo has had no need to create a government sponsored program, relying fully upon the residents of Garbage City to collect their trash. Just a single pair of Zabaleens, working with a horse-drawn carriage, are able to collect the trash from 350 of Cairo’s homes and businesses. They are not paid for their labor either, as the profiting from recycling is enough for many to live on.