Person: Lehmann, Harry
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1957
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Lehmann
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Harry
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Veröffentlichung Sustainable resource use and the projected development of PV(2013) Günther, Jens; Lehmann, HarryClimate protection, the transformation of the energy system, the sustainable use of natural resources and increasing resource efficiency are main strategic policy fields in the EU and the member countries. Whereas the expansion of PV electricity supply is clearly fostering the first two strategic fields, negative effects on the latter may occur. The expected expansion requires significant amounts of raw materials and other resources. This raises questions on raw material supply, but also hampers the target achievement on resource efficiency and trade-offs to different environmental policies may occur. Whereas the topic of raw material supply is already under intensive investigation, the questions on synergies and trade-offs coming along with the PV expansion are rarely explored. Several research projects on behalf of the German Federal Environment Agency (UBA) and the German Federal Ministry for the Environment, Nature Conservation and Nuclear Safety (BMU) were analyzing different aspects in the context of environmental feasible expansion of PV in Germany. Based on selected results, we highlighted the interlinkages of PV expansion and resource use, evaluate the possible trade-offs and synergies to sustainable use of natural resources and conclude with implication for environmental policies, resource efficiency and suggestion for a resource efficient expansion of PV.Quelle: http://www.eupvsec-proceedings.com/
Veröffentlichung Resource use in a post-fossil green Germany(2020) Dittrich, Monika; Schoer, Karl; Günther, Jens; Lehmann, Harry; Nuss, PhilipHuman life requires materials. Currently, the amount of used materials increases with the level of wealth. However, to mitigate climate change, the fossil-based economies have to change towards a post-fossil, circular, sustainable economy. This chapter analyses different strategies to decline resource consumption in the scenarios GreenEe, GreenLate, GreenMe, GreenLife and GreenSupreme. It presents the resulting primary and secondary resource consumption (RMC) and the demand of selected metals during the transformation process and in 2050. The chapter demonstrates that recycling, substitution and increasing efficiency are valuable measures to minimise material consumption. The consequence of the low ambitious level in GreenLate is a low decrease in material and metal consumption and a low degree of circularity of the economy. In contrast, ambitious technological changes as shown in GreenMe and particularly combined with lifestyle changes in GreenSupreme make it possible to achieve a strong decline of primary material demand. The resulting value of 5.7 tons per person (RMC) in GreenSupreme are clearly below the global average of 11.98 tons (in 2015) and in line with material consumption targets as discussed, for example, by Stefan Bringezu. A degree of 30% circularity in the physical economy and more is feasible with existing technologies. Quelle: www.taylorfrancis.comVeröffentlichung Towards a resource efficient and greenhouse gas neutral Germany 2050(2018) Günther, Jens; Lehmann, Harry; Lorenz, Ullrich; Pfeiffer, David; Purr, KatjaVeröffentlichung Pathways to a resource-efficient and greenhouse-gas-neutral Germany(2020) Günther, Jens; Nuss, Philip; Lehmann, Harry; Purr, KatjaGlobal greenhouse gas (GHG) emissions continue to rise despite the implementation of climate protection measures. Global materials extraction is accelerating and contributes significantly to GHG-emissions and other environmental pressures. Raw materials such as metals, biomass, and non-metallic minerals are central in meeting the climate targets by 2050. This study investigates possible transformation pathways towards a GHG-neutral and resource-efficient Germany by 2050 using six scenarios. In all scenarios, a transformation towards 100% renewable energy (electricity, fuels, and feedstocks) takes place until 2050. By 2050, GHG-reductions of 95% to 97% is achieved compared to 1990. Raw materials consumption can be reduced by 56% to 70% compared to 2010. However, the demand for a range of metals central to the transformation will also increase. The results show that ambitious efforts and cross-sectoral cooperation at both national and international level are required to mitigate climate change and lower raw materials demands. Quelle: www.taylorfrancis.comVeröffentlichung Den Weg zu einem treibhausgasneutralen Deutschland ressourcenschonend gestalten(2019) Günther, Jens; Lehmann, Harry; Nissler, Diana; Nuss, Philip; Purr, Katja