Category: Energy Matters

The twentieth century way of life has been made available, largely due to the miracle of cheap energy. The price of energy has been at record lows for the past century and a half.As oil becomes increasingly scarce, it is becoming obvious to everyone, that the rapid economic and industrial growth we have enjoyed for that time is not sustainable.Now, the hunt is on. For renewable sources of energy, for alternative sources of energy, for a way of life that is less dependent on cheap energy. 

  • MIT Researchers Develop a Way to Funnel Solar Energy

     

    Strano and his students describe their new carbon nanotube antenna, or “solar funnel,” in the Sept. 12 online edition of the journal Nature Materials. Lead authors of the paper are postdoctoral associate Jae-Hee Han and graduate student Geraldine Paulus (pictured above).

    Their new antennas might also be useful for any other application that requires light to be concentrated, such as night-vision goggles or telescopes.

    Solar panels generate electricity by converting photons (packets of light energy) into an electric current. Strano’s nanotube antenna boosts the number of photons that can be captured and transforms the light into energy that can be funneled into a solar cell.

    The antenna consists of a fibrous rope about 10 micrometers (millionths of a meter) long and four micrometers thick, containing about 30 million carbon nanotubes. Strano’s team built, for the first time, a fiber made of two layers of nanotubes with different electrical properties — specifically, different bandgaps.

    In any material, electrons can exist at different energy levels. When a photon strikes the surface, it excites an electron to a higher energy level, which is specific to the material. The interaction between the energized electron and the hole it leaves behind is called an exciton, and the difference in energy levels between the hole and the electron is known as the bandgap.

    The inner layer of the antenna contains nanotubes with a small bandgap, and nanotubes in the outer layer have a higher bandgap. That’s important because excitons like to flow from high to low energy. In this case, that means the excitons in the outer layer flow to the inner layer, where they can exist in a lower (but still excited) energy state.

    Therefore, when light energy strikes the material, all of the excitons flow to the center of the fiber, where they are concentrated. Strano and his team have not yet built a photovoltaic device using the antenna, but they plan to. In such a device, the antenna would concentrate photons before the photovoltaic cell converts them to an electrical current. This could be done by constructing the antenna around a core of semiconducting material.

    The interface between the semiconductor and the nanotubes would separate the electron from the hole, with electrons being collected at one electrode touching the inner semiconductor, and holes collected at an electrode touching the nanotubes. This system would then generate electric current. The efficiency of such a solar cell would depend on the materials used for the electrode, according to the researchers.

    Strano’s team is the first to construct nanotube fibers in which they can control the properties of different layers, an achievement made possible by recent advances in separating nanotubes with different properties.

    While the cost of carbon nanotubes was once prohibitive, it has been coming down in recent years as chemical companies build up their manufacturing capacity. “At some point in the near future, carbon nanotubes will likely be sold for pennies per pound, as polymers are sold,” says Strano. “With this cost, the addition to a solar cell might be negligible compared to the fabrication and raw material cost of the cell itself, just as coatings and polymer components are small parts of the cost of a photovoltaic cell.”

    Strano’s team is now working on ways to minimize the energy lost as excitons flow through the fiber, and on ways to generate more than one exciton per photon. The nanotube bundles described in the Nature Materials paper lose about 13 percent of the energy they absorb, but the team is working on new antennas that would lose only 1 percent.

    Anne Trafton is a writer in the MIT news office.

     

  • Lloyd’s adds its voice to dire ‘peak oil’ warnings

    “Companies which are able to take advantage of this new energy reality will increase both their resilience and competitiveness. Failure to do so could lead to expensive and potentially catastrophic consequences,” says the Lloyd’s and Chatham House report “Sustainable energy security: strategic risks and opportunities for business”.

    The insurance market has a major interest in preparedness to counter climate change because of the fear of rising insurance claims related to property damage and business disruption. The review is groundbreaking because it comes from the heart of the City and contains the kind of dire warnings that are more associated with environmental groups or others accused by critics of resorting to hype. It takes a pot shot at the International Energy Agency which has been under fire for apparently under-estimating the threats, noting: “IEA expectations [on crude output] over the last decade have generally gone unmet.”

    The report says the world is heading for a global oil supply crunch and high prices owing to insufficient investment in oil production plus a rebound in global demand following recession. It repeats warning from Professor Paul Stevens, a former economist from Dundee University, at an earlier Chatham House conference that lack of oil by 2013 could force the price of crude above $200 (£130) a barrel.

    It also quotes from a US department of energy report highlighting the economic chaos that would result from declining oil production as global demand continued to rise, recommending a crash programme to overhaul the transport system. “Even before we reach peak oil,” says the Lloyd’s report, “we could witness an oil supply crunch because of increased Asian demand. Major new investment in energy takes 10-15 years from the initial investment to first production, and to date we have not seen the amount of new projects that would supply the projected increase in demand.”

    And while the world is gradually moving to new kinds of clean energy technologies the insurance market warns that there could be shortages of earth metals and other raw materials needed to help them thrive.

    Lloyd’s also calls on manufacturers, retailers and the wider business community to reassess global supply chains and their just-in time models because the “current system is increasingly vulnerable to disruption.”

    The report says government needs to do much more to bring additional price stability and transparency if the global carbon market is to become a reality.

    Richard Ward, chief executive of Lloyd’s, said the failure of the Copenhagen climate change talks last December has helped lull many business leaders into a false sense of security about the challenges ahead. “We are in a period akin to a phony war. We keep hearing of difficulties to come, but with oil, gas and coal still broadly accessible – and largely capable of being distributed where they are needed – the bad times have not yet hit … all businesses … will be affected by energy supplies which are less reliable and more expensive.”

    This article was amended on 12 July 2010. The original referred to Chatham House as being the Institute of Strategic Studies. It is the Royal Institute of International Affairs.

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    Thanks to Charles Hall for this article from Spiegel Online.  See http://www.spiegel.de/international/germany/0,1518,715138,00.html

    ‘Peak Oil’ and the German Government

    Military Study Warns of a Potentially Drastic Oil Crisis

    By Stefan Schultz | Spiegel Online

    September 1, 2010

    A study by a German military think tank has analyzed how “peak oil” might change the global economy. The internal draft document – leaked on the Internet – shows for the first time how carefully the German government has considered a potential energy crisis.

    The term “peak oil” is used by energy experts to refer to a point in time when global oil reserves pass their zenith and production gradually begins to decline. This would result in a permanent supply crisis – and fear of it can trigger turbulence in commodity markets and on stock exchanges.

    The issue is so politically explosive that it’s remarkable when an institution like the Bundeswehr, the German military, uses the term “peak oil” at all. But a military study currently circulating on the German blogosphere goes even further.

    The study is a product of the Future Analysis department of the Bundeswehr Transformation Center, a think tank tasked with fixing a direction for the German military. The team of authors, led by Lieutenant Colonel Thomas Will, uses sometimes-dramatic language to depict the consequences of an irreversible depletion of raw materials. It warns of shifts in the global balance of power, of the formation of new relationships based on interdependency, of a decline in importance of the western industrial nations, of the “total collapse of the markets” and of serious political and economic crises. 

    The study, whose authenticity was confirmed to SPIEGEL ONLINE by sources in government circles, was not meant for publication. The document is said to be in draft stage and to consist solely of scientific opinion, which has not yet been edited by the Defense Ministry and other government bodies.

    The lead author, Will, has declined to comment on the study. It remains doubtful that either the Bundeswehr or the German government would have consented to publish the document in its current form. But the study does show how intensively the German government has engaged with the question of peak oil.

    Parallels to activities in the UK

    The leak has parallels with recent reports from the UK. Only last week the Guardian newspaper reported that the British Department of Energy and Climate Change (DECC) is keeping documents secret which show the UK government is far more concerned about an impending supply crisis than it cares to admit.

    According to the Guardian, the DECC, the Bank of England and the British Ministry of Defence are working alongside industry representatives to develop a crisis plan to deal with possible shortfalls in energy supply. Inquiries made by Britain’s so-called peak oil workshops to energy experts have been seen by SPIEGEL ONLINE. A DECC spokeswoman sought to play down the process, telling the Guardian the enquiries were “routine” and had no political implications.

    The Bundeswehr study may not have immediate political consequences, either, but it shows that the German government fears shortages could quickly arise.

    A Litany of Market Failures

    According to the German report, there is “some probability that peak oil will occur around the year 2010 and that the impact on security is expected to be felt 15 to 30 years later.” The Bundeswehr prediction is consistent with those of well-known scientists who assume global oil production has either already passed its peak or will do so this year. 

    Market Failures and International Chain Reactions

    The political and economic impacts of peak oil on Germany have now been studied for the first time in depth. The crude oil expert Steffen Bukold has evaluated and summarized the findings of the Bundeswehr study. Here is an overview of the central points:

    ·     Oil will determine power: The Bundeswehr Transformation Center writes that oil will become one decisive factor in determining the new landscape of international relations: “The relative importance of the oil-producing nations in the international system is growing. These nations are using the advantages resulting from this to expand the scope of their domestic and foreign policies and establish themselves as a new or resurgent regional, or in some cases even global leading powers.”

    ·     Increasing importance of oil exporters: For importers of oil more competition for resources will mean an increase in the number of nations competing for favor with oil-producing nations. For the latter this opens up a window of opportunity which can be used to implement political, economic or ideological aims. As this window of time will only be open for a limited period, “this could result in a more aggressive assertion of national interests on the part of the oil-producing nations.”

    ·     Politics in place of the market: The Bundeswehr Transformation Center expects that a supply crisis would roll back the liberalization of the energy market. “The proportion of oil traded on the global, freely accessible oil market will diminish as more oil is traded through bi-national contracts,” the study states. In the long run, the study goes on, the global oil market, will only be able to follow the laws of the free market in a restricted way. “Bilateral, conditioned supply agreements and privileged partnerships, such as those seen prior to the oil crises of the 1970s, will once again come to the fore.”

    ·     Market failures: The authors paint a bleak picture of the consequences resulting from a shortage of petroleum. As the transportation of goods depends on crude oil, international trade could be subject to colossal tax hikes. “Shortages in the supply of vital goods could arise” as a result, for example in food supplies. Oil is used directly or indirectly in the production of 95 percent of all industrial goods. Price shocks could therefore be seen in almost any industry and throughout all stages of the industrial supply chain. “In the medium term the global economic system and every market-oriented national economy would collapse.”

    ·     Relapse into planned economy: Since virtually all economic sectors rely heavily on oil, peak oil could lead to a “partial or complete failure of markets,” says the study. “A conceivable alternative would be government rationing and the allocation of important goods or the setting of production schedules and other short-term coercive measures to replace market-based mechanisms in times of crisis.”

    ·     Global chain reaction: “A restructuring of oil supplies will not be equally possible in all regions before the onset of peak oil,” says the study. “It is likely that a large number of states will not be in a position to make the necessary investments in time,” or with “sufficient magnitude.” If there were economic crashes in some regions of the world, Germany could be affected. Germany would not escape the crises of other countries, because it’s so tightly integrated into the global economy.

    ·     Crisis of political legitimacy: The Bundeswehr study also raises fears for the survival of democracy itself. Parts of the population could perceive the upheaval triggered by peak oil “as a general systemic crisis.” This would create “room for ideological and extremist alternatives to existing forms of government.” Fragmentation of the affected population is likely and could “in extreme cases lead to open conflict.”

    The scenarios outlined by the Bundeswehr Transformation Center are drastic. Even more explosive politically are recommendations to the government that the energy experts have put forward based on these scenarios. They argue that “states dependent on oil imports” will be forced to “show more pragmatism toward oil-producing states in their foreign policy.” Political priorities will have to be somewhat subordinated, they claim, to the overriding concern of securing energy supplies.

    For example:  Germany would have to be more flexible in relation toward Russia’s foreign policy objectives. It would also have to show more restraint in its foreign policy toward Israel, to avoid alienating Arab oil-producing nations. Unconditional support for Israel and its right to exist is currently a cornerstone of German foreign policy.

    The relationship with Russia, in particular, is of fundamental importance for German access to oil and gas, the study says. “For Germany, this involves a balancing act between stable and privileged relations with Russia and the sensitivities of (Germany’s) eastern neighbors.” In other words, Germany, if it wants to guarantee its own energy security, should be accommodating in relation to Moscow’s foreign policy objectives, even if it means risking damage to its relations with Poland and other Eastern European states.

    Peak oil would also have profound consequences for Berlin’s posture toward the Middle East, according to the study. “A readjustment of Germany’s Middle East policy … in favor of more intensive relations with producer countries such as Iran and Saudi Arabia, which have the largest conventional oil reserves in the region, might put a strain on German-Israeli relations, depending on the intensity of the policy change,” the authors write.

    When contacted by SPIEGEL ONLINE, the Defense Ministry declined to comment on the study.

     

  • Gulf oil disaster not unique to BP and will ‘happen again’

    In an internal investigation, released this week, BP attempted to spread the blame amongst other contractors working on the rig. A tactic Greenpeace and others say is aimed at reducing its sole vulnerability to future legal actions being brought by US fishermen and other businesses who have suffered as a result of the spill.

    The spill has already cost the company £5 billion in clean-up and compensation claims.

    Despite the investigation highlighting risky practices in the deepwater drilling sector, activists say the oil industry is attempting to keep the focus on BP.

    ‘The industry is keen to make it sound like BPs problem,’ explained Adam Ma’anit, an analyst at PLATFORM London. ‘But this report shows the complexity of deepwater drilling and its vulnerability – accidents are happening all the time it is a ticking timebomb.

    ‘How many more crisis need to happen before government wakes up to its responsibilities. What happened to BP is not unique, it is a dangerous industry and government needs to stop pretending otherwise,’ he said.

    BP’s outgoing chief executive Tony Hayward is due to appear before MPs next week to give evidence about the risks of deepwater drilling in UK waters.

    However, Greenpeace say the UK should not wait any longer before introducing an immediate ban on all deep water drilling. Tzeporah Berman, head of Greenpeace International’s Energy Campaign, said oil companies could not be trusted to put the environment and safety ahead of the pursuit of profit.

    Useful links

    BP internal investigation

  • California bags the plastic bag ban but makes solar leap

     

    Commissioner Timothy Simon noted at Thursday’s energy commission meeting in San Francisco that the price for that electricity is lower than previous solar contracts, another sign that photovoltaic power is edging ever closer to edging out fossil fuels. The price also speaks to the ability of First Solar, an Arizona-based thin-film solar company, to win and begin to execute big projects.

    The commission also greenlighted San Diego Gas & Electric’s proposal for 100-megawatt’s worth of small-scale photovoltaic projects.

    Most installations will be 1 or 2 megawatts and built in parking lots or other open spaces where they can be plugged into the grid without expensive transmission upgrades. The move comes on top of 1,000 megawatts of distributed solar generation that the utilities commission previously approved for California’s two other big utilities.

    Michael R. Peevey, the president of the utilities commission, said despite the failure of the state legislature to institutionalize the 33 percent renewable portfolio standard — currently subject to reversal by the next governor — California was on a solar streak.

    “With approval of this project we’ll have added 1,100 megawatts of photovoltaic electricity by the three utilities,” said Peevey, noting separately that the California Solar Initiative will add another 3,000 megawatts and that by year’s end, regulators are poised to approve big solar farms that will generate 4,700 megawatts of electricity.

    “These are big, big numbers,” Peevey added. “Independent of the legislature, we’re moving to a RPS (Renewable Portfolio Standard) economy.”

  • AGL accused of dumping tainted water in Hunter

     

    AGL said it was operating safely within the licence it obtained from the NSW Office of Water, and the discharge had had no effect on the surrounding country. Most of the water was taken away by tanker to be treated, it said.

    But the Hunter Valley Protection Alliance, a coalition of wine, tourism and thoroughbred racing interests campaigning against what they see as excessive industrialisation of the region, commissioned its own laboratory tests on the water. It said it was concerned about pollution even before the potentially large drilling operations get under way in the region.

    ”We think they’re doing this because AGL had run into a problem because it’s expensive to take tankers of water down to Windsor, where it is processed, and it’s easier to just dump it on site,” said a spokesman for the Hunter Valley group, John Thomson.

    ”In our view, AGL is not being held accountable for its actions and the NSW government is not taking sufficient action against the coal seam gas industry.”

    The independent tests, undertaken at Hunter Water Laboratories, showed high salt levels and the presence of some chemicals associated with drilling machinery. Photographs sent to the Herald appear to show large areas of grass killed by the discharges.

    AGL said the dead vegetation was nothing to do with its drilling. “The disposal did not cause any change to vegetation because the area where the water ponded was a depression with existing poor growth because of waterlogged soils,” AGL’s general manager for upstream gas, Mike Moraza, said in a statement.

    The company described the water pumped out of its bore as ”slightly salty” but less salty than seawater.

    “The groundwater brought to surface during drilling was disposed of in accordance with our water bore licence issued by the NSW Office of Water under the Water Act,” Mr Moraza said. ”This approval allows for disposal of water to land during construction, although AGL was proactive in tankering most of the water from the site.”

    AGL was awarded two ”green globe awards” by the state government this year for sustainable use of natural resources and ”climate change leadership”.

    Staff from the Department of Industry and Investment, which is the responsible authority for coal seam gas exploration, have inspected the area.

    ”The quality of the water was of concern to [the department] with potential to affect soil salinity,” a spokeswoman said.

    ”The department has issued AGL with a direction to remediate the affected site. Industry and Investment NSW has asked AGL to provide further information. The matter is not closed.”

    AGL has 16 groundwater monitoring bores in the district, and these are separate and less deep than bores drilled to extract coal seam gas. Four main holes and 15 production wells for gas have been drilled for the Broke district as part of the gas exploration.

  • UK ‘heat pumps’ fail as green devices, finds study

     

    But the Trust’s peer-reviewed study, the largest of its kind in the UK, found the 83 devices it monitored for a year were underperforming. About 87% didn’t achieve a system efficiency of 3 which the Trust considers the level of a “well-performing” system (higher is better). And 80% failed to meet 2.6, the level being considered under the EU Renewable Energy Directive for classification as a renewable source of energy.

    The Trust blamed the use of multiple contractors for fitting systems instead of a single contractor as used in Europe, wrongly sized systems, complicated controls and a lack of education for householders using them. However, the Trust said that for many of the 5 million people in the UK living off the gas grid and currently using energy sources such as oil to heat their homes, the heat pumps could offer carbon and energy bill savings.

    Simon Green, head of Business Development for the Energy Saving Trust, said: “This trial shows that when installed and operated correctly, heat pump technologies will save significant amounts of CO2 in the UK, when replacing oil or traditional electric heating. But there is no doubt that the results are more varied than were expected, with results showing both high- and low-performing heat pumps.”

    The Heating and hot water council, whose members install such systems, said there are not currently enough installers capable of helping consumers choose the right products. Roger Webb, director at the HHIC, said: “Highlighting negative and positive results keeps all of us in the industry on our toes, so that we can work out ways that this vitally important heat pump technology can be realistically delivered. .”

    A Decc spokesperson said: “The RHI is designed to encourage a switch using fossil fuels for heating to renewable technologies across all sectors, not just domestic. Heat pumps are just one of the technologies that the scheme would support. The majority of the renewable heat incentivised by the RHI will be produced by the commercial, public and industrial sectors.

    “We know that domestic heat pumps have worked well in other countries, so we need to do more work to find out why they didn’t perform as expected in EST’s trials. For this reason, Decc, EST and industry intend to carry out a further year of monitoring to identify the factors that have caused poor performance of some of the heat pumps, and to determine whether performance can be improved.”

    Gaynor Hartnell, chief executive of the Renewable Energy Association, which represents renewable heat companies, said: “A properly installed and sized heat pump can deliver significant carbon savings, particularly in areas not served by the gas grid. Heat pumps are one of several technologies that can contribute to greening the UK’s heat supply. These trials, while important, must not delay the introduction of the RHI in April next year.”

    Separately today, an analysis by the thinktank Institute for Public Policy Research suggested community buildings could earn around £100m a year from incentives for green electricity generation. The IPPR believes the UK’s 280,000 pubs, village halls, community centres, churches, schools and pools could create the sizeable revenue streams by installing technologies such as solar panels and wind turbines and earning the government’s feed-in-tariff, which launched in April. But the authors, who extrapolated analysis of 14 projects in British Gas’s “Green Streets” scheme, acknowledged the one-off capital cost of such technologies would be around £1.2bn.