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| 1 |
ID:
124681
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2013.
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| Summary/Abstract |
In this paper we evaluate two approaches for estimating CO2 emission reduction from electricity savings: one based on average CO2 intensities of electricity generation and another that relies on marginal CO2 intensities.
It is found that the average CO2 intensity approach has a significant shortcoming when it comes to scenario-based approaches for CO2 emission reduction. This shortcoming lies in the chicken-egg problem created, where larger future electricity savings are actually big enough to change the CO2 intensity in such a way that it cannot be used anymore to estimate the CO2 emission reduction. We show that in these cases the marginal approach is preferred. To correctly apply this approach, it is important to determine the CO2 intensity of the future power mix which will not be built in order to avoid under or overestimation of the CO2 savings calculated. We propose a seven-step approach which can be used in scenario-based potential studies as guidance for estimating the CO2 emission reductions from not only electricity savings but also renewable electricity and mitigation options that consume electricity such as electric cars and heat pumps. Using our approach would avoid a disconnection of the CO2 reduction potential with the underlying reference scenario.
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| 2 |
ID:
109704
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2011.
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| Summary/Abstract |
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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| 3 |
ID:
126518
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2013.
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| Summary/Abstract |
As potentials for energy savings are huge, industry can provide a major contribution to energy savings goals. This paper focuses on the energy savings realized under the Dutch voluntary agreements in the period 2001-2011. Participants in these schemes are obliged to plan and implement all measures with a payback period of less than 5 years. This paper shows how many of these projects have been implemented and how much savings they generate. Our findings show that large differences exist in the realized savings between individual companies. There is however no significant difference in savings observed between companies that participate in the Emission Trading System (ETS) and companies that do not. Although it is impossible to disentangle the drivers behind the implementation of these projects, the amount of savings suggest that at least part of them was implemented because of different energy policy instruments.
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| 4 |
ID:
125518
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2013.
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| Summary/Abstract |
Energy efficiency is considered one of the most cost effective ways to enhance security of energy supply and reduce greenhouse gas emissions. According to Europe's Energy Efficiency Plan, the biggest energy savings potential in the EU lies in the built environment. However, the many barriers to energy efficiency have prevented the implementation of the existing potential so far. This paper evaluates the existing policy instruments aimed at energy efficiency in buildings in Spain as laid down in the 2nd National Energy Efficiency Action Plan (NEEAP). The results show that the current policy package is insufficient to yield the existing energy savings potential in this sector. As much of the savings potential can be found in existing buildings and realization of this potential very much relies on voluntary action, the renovation sector is in need of an appropriate financial framework that mobilizes sufficient public and private financial resources, and transparent and efficient mechanisms to ensure the return on investment and payments from those who benefit from the renovation. Such financial framework needs to be supported by a regulatory framework that is tuned to existing buildings and an organizational framework that effectively connects the different policy layers in Spain.
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| 5 |
ID:
180845
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| Summary/Abstract |
In many countries the role of combined heat & power (CHP) generation in the power & heat sector is significant. However, in decomposition analyses of the power & heat sector the contribution of CHP to observed changes in primary energy use or CO2 emissions is generally not made explicit. In this paper, the contribution of CHP is shown for eight countries (China, Denmark, France, Germany, Italy, the Netherlands, Poland and the USA) in the period 2005–2016. In addition, an alternative method is proposed for power & heat sector decomposition analysis with five driving factors: volume effect, subsector effect, heat effect, fuel mix effect and efficiency effect. This method combines indicators from existing decomposition methods and complements them with a CHP specific heat effect. The proposed method provides improved insight in the factors driving change in primary energy use or CO2 emissions in the power and heat sector, especially in case changes take place regarding either 1) the power-to-heat ratio, 2) the share of CHP electricity in total electricity production, 3) the CHP fuel mix, and/or 4) the efficiency of individual CHP fuels.
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| 6 |
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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