Publicado por: Alessandra Franchi

~ 27/11/08

Download

From a supply chain view, this paper traces the flow of transportation fuels through required systems and addresses the current petroleum-based economy, DOE’s vision for a future hydrogen-based transportation economy, and the challenges of a massive market and infrastructure transformation.

CNEN – Comissão Nacional de Energia Nuclear

2008 – Boletim de Energia – Acesso livre

Publicado por: Alessandra Franchi

~ 10/09/08

Download

During trilateral discussions in 2006, the Government of Brazil, the European Commission (representing the European Union) and the Government of the United States of America affirmed their belief that the current market for biofuels is viable, the market will continue to grow within regions, and that international trade in biofuels would increase significantly by the end of the decade. In February 2007, a conference was organized by the European Commission and the European Committee for Standardization (CEN), with the active participation of the U.S. National Institute of Standards and Technology (NIST) and the Brazil’s National Institute of Metrology, Standardization, and Industrial Quality (INMETRO). This meeting, held in Brussels, convened a broad range of private-sector biofuels experts and government representatives from the EU, US and Brazil. The participants identified that differing standards for biofuels were a potential handicap to the free circulation of biofuels among the three regions. To support the global trade of biofuels, representatives of Brazil, the EU and the U.S. agreed to promote, whenever possible, the compatibility of biofuels-related standards in their respective regions. Such compatibility would not only facilitate the increasing use of biofuels in each of the regional markets, but also would support both exporters and importers of biofuels by helping to avoid adverse trade implications in a global market.

CNEN – Comissão Nacional de Energia Nuclear

2007 – Boletim de Energia – Acesso livre


Publicado por: Alessandra Franchi

~ 03/09/08

Download

The United States consumes more than 20 million barrels of oil each day, two-thirds of which is imported, leaving the nation vulnerable to rising prices. Oil combustion produces emissions linked to health problems and global warming. In January 2003, the administration announced a 5-year, $1.2 billion Hydrogen Fuel Initiative to perform research, development, and demonstration (R&D) for developing hydrogen fuel cells for use as a substitute for gasoline engines. Led by the Department of Energy (DOE), the initiative’s goal is to develop the technologies by 2015 that will enable U.S. industry to make hydrogen-powered cars available to consumers by 2020. GAO examined the extent to which DOE has (1) made progress in meeting the initiative’s targets, (2) worked with industry to set and meet targets, and (3) worked with other federal agencies to develop and demonstrate hydrogen technologies. GAO reviewed DOE’s hydrogen R&D plans, attended DOE’s annual review of each R&D project, and interviewed DOE managers, industry executives, and independent experts.
DOE’s hydrogen program has made important progress in all R&D areas, including both fundamental and applied science. Specifically, DOE has reduced the cost of producing hydrogen from natural gas, an important source of hydrogen through the next 20 years; developed a sophisticated model to identify and optimize major elements of a projected hydrogen delivery infrastructure; increased by 50 percent the storage capacity of hydrogen, a key element for increasing the driving range of vehicles; and reduced the cost and improved the durability of fuel cells. However, some of the most difficult technical challenges lie ahead, including finding a technology that can store enough hydrogen on board a vehicle to achieve a 300-mile driving range, reducing the cost of delivering hydrogen to consumers, and further reducing the cost and improving the durability of fuel cells. The difficulty of overcoming these technical challenges, as well as hydrogen R&D budget constraints, has led DOE to push back some of its interim target dates. However, DOE has not updated its 2006 Hydrogen Posture Plan’s overall assessment of what the department reasonably expects to achieve by its technology readiness date in 2015 and how this may differ from previous posture plans. In addition, deploying the support infrastructure needed to commercialize hydrogen fuel-cell vehicles across the nation will require an investment of tens of billions of dollars over several decades after 2015. DOE has effectively involved industry in designing and reviewing its hydrogen R&D program and has worked to align its priorities with those of industry. Industry continues to review R&D progress through DOE’s annual peer review of each project, technical teams co-chaired by DOE and industry, and R&D workshops. Industry representatives are satisfied with DOE’s efforts, stating that DOE generally has managed its hydrogen R&D resources well. However, the industry representatives noted that DOE’s emphasis on vehicle fuel cell technologies has left little funding for stationary or portable technologies that potentially could be commercialized before vehicles. In response, DOE recently increased its funding for stationary and portable R&D. DOE has worked effectively with hydrogen R&D managers and scientists in other federal agencies, but it is too early to evaluate collaboration among senior officials at the policy level. Agency managers are generally satisfied with the efforts of several interagency working groups to coordinate activities and facilitate scientific exchanges. At the policy level, in August 2007, DOE convened the inaugural meeting of an interagency task force, composed primarily of deputy assistant secretaries and program directors. The task force is developing plans to demonstrate and promote hydrogen technologies.

CNEN – Comissão Nacional de Energia Nuclear

2008 – Boletim de Energia – Acesso livre


Publicado por: Alessandra Franchi

Download

Energy policy is facing major challenges. Industrial countries are increasingly dependent on imports of oil and gas, and global warming is becoming more of a reality. In order to address these challenges, a sustainable energy system must be developed. This document presents an outline of a sustainable energy situation for Europe in the year 2050. The research institutes ECN and NRG hope that this vision will guide energy research and inspire both businesses and governments. The authors describe a consistent development path that leads to a reduction in CO2 emissions in Europe to 60% below 1990 levels, and to a signifi cantly reduced level of oil and gas imports. However, in 2050 the energy system will not be completely sustainable. The authors have formulated additional sustainability conditions for the reliable use of nuclear energy, biomass, and CO2 capture & storage in a sustainable energy system. If these conditions are complied with, the overall picture will meet realistic criteria of sustainability. Despite this, continued energy conservation and further development of renewables should be pursued after 2050. In the vision for 2050 presented here, much weight is given to new technologies, new resources and new energy infrastructure. In addition to such innovation, new ways of decision-making and new patterns of behaviour are essential. With respect to technological developments that result in, for instance, affordable solar cells, the deployment of second-generation biofuels and reliable CO2 capture & storage, realistic judgements have been made as to the timing of their commercialisation. The technology policy required to bring about such technological developments is briefly outlined.

CNEN – Comissão Nacional de Energia Nuclear

2007 – Boletim de Energia – Acesso livre