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| 1 |
ID:
116763
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2012.
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| Summary/Abstract |
We analyze the change of energy consumption and CO2 emissions in China's cement industry and its driving factors over the period 1990-2009 by applying a log-mean Divisia index (LMDI) method. It is based on the typical production process for clinker manufacturing and differentiates among four determining factors: cement output, clinker share, process structure and specific energy consumption per kiln type. The results show that the growth of cement output is the most important factor driving energy consumption up, while clinker share decline, structural shifts mainly drive energy consumption down (similar for CO2 emissions). These efficiency improvements result from a number of policies which are transforming the entire cement industry towards international best practice including shutting down many older plants and raising the efficiency standards of cement plants. Still, the efficiency gains cannot compensate for the huge increase in cement production resulting from economic growth particularly in the infrastructure and construction sectors. Finally, scenario analysis shows that applying best available technology would result in an additional energy saving potential of 26% and a CO2 mitigation potential of 33% compared to 2009.
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| 2 |
ID:
171367
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To accommodate the increasing share of intermittent renewable energy, options need to be evaluated to maintain a profitable, secure and sustainable energy supply. Besides energy efficiency (EE) as “first fuel”, adapting demand to meet the variable supply needs to be evaluated. We focus on concepts of energy efficiency and load flexibility (further: demand response; DR) and compare the two types of measures with respect to the diffusion of actions taken and possible drivers and barriers affecting uptake, we derive recommendations to promote the measures more effectively and synergistically. We analyse the results of a survey of more than 1500 service sector companies in Germany and supplement the results with research on German policies promoting energy efficiency and how these could also promote DR. We use logistic regression models to assess and compare influencing factors. Energy efficiency measures are much more prevalent than demand response measures, while most of the influencing factors for both are comparable. More information and standardisation will be needed to tap the demand response potential. We assume that the successful instruments and policies for energy efficiency could also be applied to foster demand response. Especially, instruments such as Energy Efficiency Networks could be redesigned to include demand response. The same holds for other established, effective regulatory instruments like energy audits, which could be enhanced by adding demand response. Although energy efficiency and demand response measures might counteract in specific cases, promoting DR measures can to a large extent built synergistically on existing energy efficiency policy.
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| 3 |
ID:
110395
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2011.
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| Summary/Abstract |
The idea of generating electricity in North Africa using concentrating solar thermal power (CSP) has been around for some time now but has recently gained momentum through the Mediterranean Solar Plan (MSP) and the formation of the Desertec Industrial Initiative. This paper argues that while the large-scale deployment of CSP in North Africa does not seem economically attractive for either European or African institutions or countries on their own at present, combining domestic use and electricity exports could be profitable for both parties. A detailed economic portfolio covering both solar and wind power plants can achieve competitive price levels, which would accelerate the diffusion of solar technology in North Africa. This portfolio could be financed partially by exporting electricity from solar thermal plants in North Africa via HVDC interconnections to European consumers. Sharing the costs in this way makes it possible to generate solar electricity for the domestic market at a reasonable cost. Some of the electricity produced from the solar power plants and wind parks in North Africa is sold on European energy markets in the form of a long-term contracted solar-wind portfolio, which would qualify for support from the financial incentive schemes of the European Member States (e.g. feed-in tariffs). This transfer of green electricity could help to meet the targets for energy from renewable energy sources (RES) in the EU Member States as the new EU Directive of 2009 opened the European electricity market to imports from third states.
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| 4 |
ID:
109704
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2011.
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Europe's 2020 greenhouse gas (GHG) reduction target consists of two sub-targets: one for the Emissions Trading Scheme (ETS) sectors and one for the non-ETS sectors. The non-ETS target covers CO2 emissions in buildings, transport and non-ETS industry and non-CO2 GHG emissions. The non-ETS target is known as Europe's Effort Sharing Decision. This article discusses the GDP per capita method the European Commission has applied in setting Member State specific targets for the non-ETS ("the effort sharing") and shows that it results in an imbalanced reduction effort among the Member States. It turns out that the principal mechanism of the GDP per capita method (low-GDP countries get room to catch up with high-GDP countries by allowing them to increase emissions) is obscured by the non-CO2 GHGs, the baseline projections of which are highly policy-induced and not correlated with the growth of GDP per capita. We propose an alternative method that (1) corrects for the policy-induced decrease of non-CO2 GHG emissions and (2) is based on energy savings potentials. This approach could be used in future target setting for non-ETS sectors - including in the case that the overarching EU-wide target would be strengthened - and would provide a direct support to Europe's energy savings ambitions and policies.
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| 5 |
ID:
105760
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2011.
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| Summary/Abstract |
We show that renewable energy contributes to Europe's 2020 primary energy savings target. This contribution, which is to a large extent still unknown and not recognized by policy makers, results from the way renewable energy is dealt with in Europe's energy statistics. We discuss the policy consequences and argue that the 'energy savings' occurring from the accounting of renewable energy should not distract attention from demand-side energy savings in sectors such as transport, industry and the built environment. The consequence of such a distraction could be that many of the benefits from demand-side energy savings, for example lower energy bills, increase of the renewable energy share in energy consumption without investing in new renewable capacity, and long-term climate targets to reduce greenhouse gas emissions by more than 80%, will be missed. Such distraction is not hypothetical since Europe's 2020 renewable energy target is binding whereas the 2020 primary energy savings target is only indicative.
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