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The iron and steel industry is a major industrial emitter of carbon dioxide globally and in Germany. If European and German climate targets were set as equal proportional reduction targets (referred to here as “flat” targets) among sectors, the German steel industry would have to reduce its carbon dioxide emissions from about 60 million metric tons currently to 28–34 million metric tons by 2030. Technical options to further reduce CO 2 that are based on existing production processes are limited. Hence, in the future, the CO 2 emissions of the steel industry could be reduced by alternative and new production processes and variations in production levels. This paper describes four production pathways from 2015 to 2035 that reveal the impact of constant, increasing and decreasing production levels as well as different production processes. The diffusion of energy-efficient technologies, the increase of renewables in the German electricity mix and the age and lifetime of blast furnaces are considered as well. The findings suggest that the German steel sector will only manage to achieve its European CO 2 emissions reduction target for 2030 if it strongly decreases its production levels. Furthermore, it is highly unlikely that the German steel sector will meet its German climate target regardless of the production pathway selected. The findings suggest that efforts to reduce CO 2 emissions in the steel industry should focus on two areas. First, alternative steelmaking processes need to be developed. Besides low-CO 2 process technologies, CO 2 -free processes should be considered as well. Direct reduced iron could be produced based on hydrogen and then fed into an electric arc furnace powered by electricity generated using CO 2 -free sources. Steel could also be produced using electrolysis based on CO 2 -free electricity. However, because these technologies might take decades to develop and introduce, there should be a second focus on incremental CO 2 reductions in the short to medium term. [ABSTRACT FROM AUTHOR]

This paper deals with possibilities of targeting energy efficiency potentials in German companies by delivering information and support within a cooperative management system “Learning Energy Efficiency Networks” (LEEN). Information deficits are pointed out as a relevant barrier to implementing energy efficiency measures in literature that can be aimed at by energy programmes such as audits. Our concept combines aspects of cooperation, shared experiences and moderated learning processes. The programme sought to go beyond the sole provision of consultation, by qualifying companies to decide and act on implementing energy efficiency measures by delivering the individual practical know-how they need. After having analysed evaluation data of several hundred companies, our results show that the participants were mainly motivated by the need for practical knowledge and specific information. The networks could well satisfy this need. The benefit for the participants in such delivered information was also reflected in the decreasing of the barrier of imperfect information and the programme enabled companies to make informed decisions on energy efficiency measures. But the gain of the programme was not solely restricted on an increase in knowledge: The majority of participants reported implementation of suggested measures, which would not have been implemented without the programme. Hence, LEEN can be indicated as a policy instrument enabling informed decisions on efficiency measures and supporting their implementation. Possibly tailoring the programme to different target groups and aiming at dismantling other barriers directly in addition to tackling information deficits could be undertaken to improve the process. [ABSTRACT FROM AUTHOR]

Energy efficiency retrofits are often impeded by high perceived investment risks, long payback periods and a lack of skills. At the municipal level these issues are particularly pronounced as procuring, implementing, and managing retrofits can exceed existing municipal governance capacities. The diffusion of municipal LED street lighting as a replacement for conventional lighting serves as an example. This paper argues that technological (e.g. complexity and maturity), economic (e.g. selling services vs. products and financing costs), institutional (e.g. property situation and contracts) and competency barriers to retrofitting (e.g. lack of measurement capacity and qualified facilitators) translate into transaction costs. We develop a taxonomy of appropriate modes of municipal retrofitting governance based on transaction costs economics. The findings indicate that more market-based solutions, energy performance contracts in particular, can facilitate the procurement of innovative energy efficiency retrofitting solutions and associated investments among municipalities if neutral tenders, open-book accounting, municipal ownership and intermediary organisations allow municipalities to choose appropriate governance structures for particular technologies and retrofits. [ABSTRACT FROM AUTHOR]

Prosuming combines energy production and consumption on a decentralised level and can contribute to expanding renewable energies and integrating intermittent energy in a decarbonised energy system. This is only one way that conventional electricity consumers can become active agents in electricity systems, but the current literature lacks a comprehensive typology of this field. Furthermore, the literature on prosuming focuses on households and largely neglects organisations. Addressing these two gaps in the literature, this paper first suggests a typology of eight archetypes that encompass electricity production, demand management, and storage as dimensions. Second, it maps the decision-making process for prosuming infrastructure in small and medium-sized organisations based on 14 in-depth interviews from Germany. To better understand the implementation processes of prosuming infrastructure and to identify critical success factors for organisations to become active electricity agents, it outlines a comprehensive collection of motives, drivers and barriers that are shaped by the organisational context and play a significant role when organisations become energy prosumers. [ABSTRACT FROM AUTHOR]

The aim of this paper is to provide an overview about the distribution of the environmental impacts arising from different domestic functions (i.e. storing and preparing food, washing dishes, watching television, reading, personal cleaning, washing, drying and ironing clothes, home cleaning, heating, cooling, lighting and mobility) typically performed within a common family home. The method has general validity but for reasons related to the availability of data in the literature it has been applied by way of example only in three EU countries: Italy, Germany and France. The study was performed by using Life Cycle Assessment (LCA) in accordance with international standard ISO 14067 for determining the carbon footprint of different alternative domestic components, mainly appliances, for each function, by exclusively exploiting data from scientific literature. The functional unit is defined comprising all most common referred domestic activities of a family of three members within a house of 100 m2. The study identified an optimal configuration and a worse one of the domestic components in terms of carbon footprint, showing how a wise choice of these can greatly affect the overall impact by reducing it compared to the worst by more than 22% in Italy, 45% in Germany and 56% in France. The average impacts between the optimal and the worst configurations of Germany are higher than Italy (+27%) and France (+44%). Considering the impacts among the domestic functions in the average configuration, mobility was the most impactful in all the three countries (35–48%), followed by heating (17–26%), personal cleaning (10–13%) and washing dishes (8–13%), while cooling is consistent only in Italy (13%), against 5% in Germany and 2% in France. The study also allowed to identify some generic criteria for defining the optimal configuration: the increasing in energy efficiency, the choice of the least impacting energy source depending on the geographical location, ensuring water savings and the early replacement of older domestic components. Finally, by comparing some common measures for improving the domestic sustainability, these criteria proved to be more effective than solar systems and improved electricity mix. The provided outcomes may be used by manufacturers for improving their product in a more sustainable way as well as by legislator and end user, respectively for boosting and choosing the greener domestic components. Image 1 • LCA for estimating domestic environmental impacts based on scientific literature. • Application to three EU countries: Italy, Germany and France. • Assessing Carbon Footprint of different alternative domestic components for each domestic function. • Determining the optimal and the worst configuration of domestic components to minimize the impacts. • Comparing possible improvements for minimizing carbon footprint. [ABSTRACT FROM AUTHOR]