36,441 research outputs found
Product Service Systems and Sustainability: Opportunities for Sustainable Solutions
Given that the concept of PSS is beginning to 'catch on' and gain attention, it is time for UNEP to contribute to, and influence the progress of PSS, to ensure that in concept and application it incorporates the idea of sustainability. In this context its potential is not generally understood by the public and private sectors or civil society. This booklet is intended to contribute to the dissemination and the discussion of the PSS concept as a promising approach to sustainability. The ultimate goal must be to achieve Sustainable Product-Service Systems. This UNEP publication is targeted at industry and government, academia and civil society to explain PSS â their potential benefits and limitations â in the sustainability context â using real company examples. To prepare this booklet, UNEP has drawn on the knowledge and experience of PSS experts to flesh out the concept of a sustainable PSS, to collect case studies of PSS in practice, to begin to document both its benefits and the hurdles which need to be overcome in its application, and to suggest ways forward in its development
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Mainstreaming New Renewable Energy Technologies
This paper outlines the benefits, obstacles and options for governments to support international markets for technology
development. International markets for new energy technologies offer greater scope, thereby increasing the incentives and opportunities
for technology improvements. As the market is supported by more independent governments, the confidence of technology developers
and producers that future markets for their products will exist is increasing, thus enabling capital access and inducing R&D investment
and exploration of improved production processes. The bigger markets also allow for international competition, thus allowing for the
application of the best available technology. The government challenge to induce sufficient RD&D remains and with international markets
the benefits and costs of national governments free-riding on international effort needs to be addressed. Finally, we discuss how international
co-operation can be used to evolve the energy system in such a way that it can integrate new technologies at minimum cost
Induced Technological Change in a Limited Foresight Optimization Model
The threat of global warming calls for a major transformation of the energy system the coming century. Modeling technological change is an important factor in energy systems modeling. Technological change may be treated as induced by climate policy or as exogenous. We investigate the importance of induced technological change (ITC) in GET-LFL, an iterative optimization model with limited foresight that includes learning-by-doing. Scenarios for stabilization of atmospheric CO2 concentrations at 400, 450, 500 and 550 ppm are studied. We find that the introduction of ITC reduces the total net present value of the abatement cost over this century by 3-9% compared to a case where technological learning is exogenous. Technology specific polices which force the introduction of fuel cell cars and solar PV in combination with ITC reduce the costs further by 4-7% and lead to significantly different technological solutions in different sectors, primarily in the transport sector.Energy system model, Limited foresight, Climate policy, Endougenous learning, Technological lock-in
InterCloud: Utility-Oriented Federation of Cloud Computing Environments for Scaling of Application Services
Cloud computing providers have setup several data centers at different
geographical locations over the Internet in order to optimally serve needs of
their customers around the world. However, existing systems do not support
mechanisms and policies for dynamically coordinating load distribution among
different Cloud-based data centers in order to determine optimal location for
hosting application services to achieve reasonable QoS levels. Further, the
Cloud computing providers are unable to predict geographic distribution of
users consuming their services, hence the load coordination must happen
automatically, and distribution of services must change in response to changes
in the load. To counter this problem, we advocate creation of federated Cloud
computing environment (InterCloud) that facilitates just-in-time,
opportunistic, and scalable provisioning of application services, consistently
achieving QoS targets under variable workload, resource and network conditions.
The overall goal is to create a computing environment that supports dynamic
expansion or contraction of capabilities (VMs, services, storage, and database)
for handling sudden variations in service demands.
This paper presents vision, challenges, and architectural elements of
InterCloud for utility-oriented federation of Cloud computing environments. The
proposed InterCloud environment supports scaling of applications across
multiple vendor clouds. We have validated our approach by conducting a set of
rigorous performance evaluation study using the CloudSim toolkit. The results
demonstrate that federated Cloud computing model has immense potential as it
offers significant performance gains as regards to response time and cost
saving under dynamic workload scenarios.Comment: 20 pages, 4 figures, 3 tables, conference pape
Opportunities and risks for CO2 intense sectors in Turkey
The Carbon Disclosure Project (CDP) is an independent not-for-profit organization holding the largest database of primary corporate climate change information in the world. Over 3,000 organizations in some 60 countries now disclose their greenhouse gas emissions, water management and climate change strategies through CDP, in order that they can set reduction targets and make performance improvements. This data is gathered on behalf of institutional investors, purchasing organizations and government bodies, then, made available to CDP signatories for integration into business and policy decision-making.
Since its formation in 2000, CDP has become the gold standard for carbon disclosure methodology and process, providing essential climate change data to the global market place. Since the beginning of the year 2010, Turkey is included in Carbon Disclosure Project with the support of Akbank and Ernst & Young-Turkey. The project is managed and controlled by Sabanci University Corporate Governance Forum, which has become a centre of expertise
on corporate disclosure over the years. 50 companies, which constitute the Istanbul Stock Exchangeâs ISE-50 index, have been invited by CDP Turkey in the year of 2010 to disclose climate change related information,10 of those companies responded to CDPâs invitation and presented their carbon emission
levels and risk management strategies to international investors through the CDP platform. Additionally one company joined the CDP voluntarily.
In the year 2011, the invitation is extended to 100 companies constituting Istanbul Stock Exchangeâs ISE-100 index. A total of 17 ISE 100 companies responded to CDP, including two ISE 100 firms whose international parent companies answered the questionnaire on their behalf. In addition, there are three voluntary responses outside the ISE 100 sample, which increased the number of direct CDP responses from Turkish companies to 20. In 2012, CDP Turkey aims to enlarge its scope to cover both listed and non-listed firms in
carbon intense industries through voluntary disclosure in collaboration with sector organizations. This report discusses the conditions in CO2 intense sectors of Turkey, in terms of market conditions, current & potential regulatory risks and opportunities. The first sections of the report elaborate on comparative GHG emission trends in Turkey. The second section lays down leading firms in the largest industries and the most CO2 intensive sectors in Turkey. The third section draws attention to the market dynamics in carbon intense industries. And the last section, points out risks and potential opportunities for those industries, including EC legislation and initiatives to transform consumption and production patterns
Opportunities for Dutch Biorefineries
Deze Roadmap Bioraffinage beschrijft een aantal mogelijke routes naar de ontwikkeling en implementatie van een bioraffinage-gerelateerde Bio-based Economy in Nederland. De Roadmap combineert korte- en middellange termijn mogelijkheden (commerciële implementatie, demonstratie plants, pilot plants en gerelateerd toegepast onderzoek) met strategisch onderzoek voor de langere termijn. Tevens zijn vier z.g. Moonshots uitgewerkt, als voorziene bioraffinagestrategieën met een grote potentie voor de Nederlandse economi
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A roadmap for China to peak carbon dioxide emissions and achieve a 20% share of non-fossil fuels in primary energy by 2030
As part of its Paris Agreement commitment, China pledged to peak carbon dioxide (CO2) emissions around 2030, striving to peak earlier, and to increase the non-fossil share of primary energy to 20% by 2030. Yet by the end of 2017, China emitted 28% of the world's energy-related CO2 emissions, 76% of which were from coal use. How China can reinvent its energy economy cost-effectively while still achieving its commitments was the focus of a three-year joint research project completed in September 2016. Overall, this analysis found that if China follows a pathway in which it aggressively adopts all cost-effective energy efficiency and CO2 emission reduction technologies while also aggressively moving away from fossil fuels to renewable and other non-fossil resources, it is possible to not only meet its Paris Agreement Nationally Determined Contribution (NDC) commitments, but also to reduce its 2050 CO2 emissions to a level that is 42% below the country's 2010 CO2 emissions. While numerous barriers exist that will need to be addressed through effective policies and programs in order to realize these potential energy use and emissions reductions, there are also significant local environmental (e.g., air quality), national and global environmental (e.g., mitigation of climate change), human health, and other unquantified benefits that will be realized if this pathway is pursued in China
Renewables 2005: Global Status Report
The Global Status Report provides an assessment of several renewables technologies -- small hydro, modern biomass, wind, solar, geothermal, and biofuels -- that are now competing with conventional fuels in four distinct markets: power generation, hot water and space heating, transportation fuels, and rural (off-grid) energy supplies. The report finds that government support for renewable energy is growing rapidly. At least 48 countries now have some type of renewable energy promotion policy, including 14 developing countries. Most targets are for shares of electricity production, typically 5-30 percent, by the 2010-2012 timeframe. Mandates for blending biofuels into vehicle fuels have been enacted in at least 20 states and provinces worldwide as well as in three key countries -- Brazil, China and India. Government leadership provides the key to market success, according to the report. The market leaders in renewable energy in 2004 were Brazil in biofuels, China in solar hot water, Germany in solar electricity, and Spain in wind power. The Global Status Report fills a gap in the international energy reporting arena, which has tended to neglect the emerging renewable energy technologies. Regular updates will be produced in the future. The report was produced and published by the Worldwatch Institute and released today at the Beijing International Renewable Energy Conference 2005, sponsored by the Government of China. This Conference brings together government and private leaders from around the world, providing a forum for international leadership on renewable energy and connects the wide variety of stakeholders that came together at the International Conference for Renewable Energies in Bonn, Germany, in 2004. The creation of REN21 was sponsored by the German Federal Ministry for Economic Cooperation and Development and the German Federal Ministry for the Environment, Nature Conservation and Nuclear Safety. Formally established in Copenhagen in June 2005, REN21 is now supported by a steering committee of 11 governments, 5 intergovernmental organizations, 5 non-governmental organizations, and several regional, local, and private organizations
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