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The production of heavy industry commodities is responsible for 1/3 of annual global GHG emissions. The Paris Agreement goals of +1.5-2°C require global emissions reach net-zero and possibly negative somewhere between 2060 and 2080. Given the normal timetable for retirement or retrofit of industrial facilities (>=20 years) all new equipment must be net-zero or negative carbon by the early 2040s. In this article we demonstrate to policymakers and modellers that industrial decarbonization is technically possible and how it might be achieved. First, we synthesize sectoral lab-bench and near-commercial technology options for reducing emissions to net-zero within 1-2 investment cycles, pathways more or less appropriate given regional resources (i.e. access to biomass, renewable electricity, or geological storage of CO 2) and political circumstances. Second, we synthesize policy options, focussing on those that encourage a managed transition from today's industry to net-zero emissions with a minimum of stranded assets, unemployment and social trauma.

A B S T R A C TEnergy-intensive processing industries (EPIs) produce iron and steel, aluminum, chemicals, cement, glass, and paper and pulp and are responsible for a large share of global greenhouse gas emissions. To meet 2050 emission targets, an accelerated transition towards deep decarbonization is required in these industries. Insights from sociotechnical and innovation systems perspectives are needed to better understand how to steer and facilitate this transition process. The transitions literature has so far, however, not featured EPIs. This paper positions EPIs within the transitions literature by characterizing their sociotechnical and innovation systems in terms of industry structure, innovation strategies, networks, markets and governmental interventions. We subsequently explore how these characteristics may influence the transition to deep decarbonization and identify gaps in the literature from which we formulate an agenda for further transitions research on EPIs and consider policy implications. Furthering this research field would not only enrich discussions on policy for achieving deep decarbonization, but would also develop transitions theory since the distinctive EPI characteristics are likely to yield new patterns in transition dynamics.

The need for low-carbon transitions in the industrial sector is increasingly recognised by governments and industry. However, radical pathways for reaching near-zero emissions in the energy intensive basic materials industry are still relatively unexplored. Most studies focus on mitigation options that lead to marginal emission reductions, e.g., energy and materials efficiency improvements and some fuel switching, or they rely on carbon capture and storage that allows continued use of existing processes and feedstock. In light of the vast future potential for primary renewable electricity we explore as a what-if thought-experiment the implications of electrifying a stable basic materials production in the EU. A quantitative technical scenario analysis of potential future electricity demand in the production of the most energy and carbon intensive basic materials, i.e., steel, cement, glass, lime, olefins, chlorine and ammonia, is presented for EU28. Production of these seven basic materials resulted in directly and indirectly energy related CO 2 emissions of about 457 Mton in 2010, equivalent to almost 13 % of all energy related GHG in EU28. Their production in 2010 required 125 TWh of electricity and 1432 TWh of fossil fuels and feedstock. A complete shift to electricity would result in an electricity demand of 1600 TWh, about 1100 TWh of which would be for producing hydrogen and hydrocarbon feedstock. We assume closed loops for carbon dioxide through recovery from waste incineration and biogenic sources. With increased materials efficiency and some share of bio-based materials and biofuels the electricity demand can be much lower. Our analysis shows that near-zero emissions could in principle be reached without relying on CCS (except for limestone related emissions) and suggests that a circular economy powered by renewable electricity may indeed be possible, at least from an energy resource and technology point of view.

If we are to limit global warming to 2 8C, all sectors in all countries must reduce their emissions of GHGs to zero not later than 2060-2080. Zero-emission options have been less explored and are less developed in the energy-intensive basic materials industries than in other sectors. Current climate policies have not yet motivated major efforts to decarbonize this sector, and it has been largely protected from climate policy due to the perceived risks of carbon leakage and a focus on short-term reduction targets to 2020. We argue that the future global climate policy regime must develop along three interlinked and strategic lines to facilitate a deep decarbonization of energy-intensive industries. First, the principle of common but differentiated responsibility must be reinterpreted to allow for a dialogue on fairness and the right to development in relation to industry. Second, a greater focus on the development, deployment and transfer of technology in this sector is called for. Third, the potential conflicts between current free trade regimes and motivated industrial policies for deep decarbonization must be resolved. One way forward is to revisit the idea of sectoral approaches with a broader scope, including not only emission reductions, but recognizing the full complexity of low-carbon transitions in energy-intensive industries. A new approach could engage industrial stakeholders, support technology research, development and demonstration and facilitate deployment through reducing the risk for investors. The Paris Agreement allows the idea of sectoral approaches to be revisited in the interests of reaching our common climate goals. Policy relevance Deep decarbonization of energy-intensive industries will be necessary to meet the 2 8C target. This requires major innovation efforts over a long period. Energy-intensive industries face unique challenges from both innovation and technical perspectives due to the large scale of facilities, the character of their global markets and the potentially high mitigation costs. This article addresses these challenges and discusses ways in which the global climate policy framework should be developed after the Paris Agreement to better support transformative change in the energy-intensive industries.

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End-use efficiency, demand response and coupling of different energy vectors are important aspects of future renewable energy systems. Growth in the number of data centres is leading to an increase in electricity demand and the emergence of a new electricity-intensive industry. Studies on data centres and energy use have so far focused mainly on energy efficiency. This paper contributes with an assessment of the potential for energy system integration of data centres via demand response and waste heat utilization, and with a review of EU policies relevant to this. Waste heat utilization is mainly an option for data centres that are close to district heating systems. Flexible electricity demand can be achieved through temporal and spatial scheduling of data centre operations. This could provide more than 10 GW of demand response in the European electricity system in 2030. Most data centres also have auxiliary power systems employing batteries and stand-by diesel generators, which could potentially be used in power system balancing. These potentials have received little attention so far and have not yet been considered in policies concerning energy or data centres. Policies are needed to capture the potential societal benefits of energy system integration of data centres. In the EU, such policies are in their nascent phase and mainly focused on energy efficiency through the voluntary Code of Conduct and criteria under the EU Ecodesign Directive. Some research and development in the field of energy efficiency and integration is also supported through the EU Horizon 2020 programme. Our analysis shows that there is considerable potential for demand response and energy system integration. This motivates greater efforts in developing future policies, policy coordination, and changes in regulation, taxation and electricity market design.