Rolf Widmer
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View article: Mobilizing materials to enable a fast energy transition: A conceptual framework
Mobilizing materials to enable a fast energy transition: A conceptual framework Open
International audience
View article: Mobilizing materials to enable a fast energy transition: a conceptual framework
Mobilizing materials to enable a fast energy transition: a conceptual framework Open
Limiting climate heating while meeting basic needs of all necessitates eliminating fossil carbon emissions. This paper discusses the dynamics of mobilizing materials required for large-scale deployment of renewable energy, which entail: 1)…
View article: Mobilizing materials to enable a fast energy transition: a conceptual framework
Mobilizing materials to enable a fast energy transition: a conceptual framework Open
Limiting climate heating while meeting basic needs of all necessitates eliminating fossil carbon emissions. This paper discusses the dynamics of mobilizing materials required for large-scale deployment of renewable energy, which entail: 1)…
View article: The 3‐Machines Energy Transition Model: Exploring the Energy Frontiers for Restoring a Habitable Climate
The 3‐Machines Energy Transition Model: Exploring the Energy Frontiers for Restoring a Habitable Climate Open
To stabilize the climate, we need to urgently decarbonize our society and remove excess CO 2 from the atmosphere. Ambitions for the transformation are ultimately limited by bio‐physical constraints, which cannot be transgressed even if all…
View article: How Much Energy Storage can We Afford? On the Need for a Sunflower Society, Aligning Demand with Renewable Supply
How Much Energy Storage can We Afford? On the Need for a Sunflower Society, Aligning Demand with Renewable Supply Open
The worsening climate crisis impels society to accelerate climate action. The attainable speed of the energy transition is ultimately limited by the available energy to build the replacing renewable infrastructures. Decarbonizing the energ…
View article: The 3-machines energy transition model: exploring the energy frontiers for restoring a habitable climate
The 3-machines energy transition model: exploring the energy frontiers for restoring a habitable climate Open
Along with the increasing urgency for climate action, more and more ambitious transformation pathways need to be conceived. The maximum speed of change is thereby constrained by biophysical limits. Even though it is essential for climate a…
View article: Reducing climate risks with fast and complete energy transitions: applying the precautionary principle to the Paris agreement
Reducing climate risks with fast and complete energy transitions: applying the precautionary principle to the Paris agreement Open
Averting the climate catastrophe requires the transformation of the energy system. A wide range of energy transition pathways are being explored in literature, which limit peak heating during this century as likely as not to 2°C or 1.5°C. …
View article: How much energy storage can we afford? On the need for a sunflower society, aligning demand with renewable supply
How much energy storage can we afford? On the need for a sunflower society, aligning demand with renewable supply Open
Our society has become accustomed to demanding energy whenever we want it. When decarbonising the energy system, this becomes a fundamental challenge due to the extent of energy storage required for matching the intermittent renewable supp…
View article: Towards more flexibility and transparency in life cycle inventories for Lithium-ion batteries
Towards more flexibility and transparency in life cycle inventories for Lithium-ion batteries Open
Electric vehicles are gaining increasing room in the global market, since they are seen amongst the most promising solutions to cope with the growing concerns related to climate change and environmental pollution. The successful evolution …
View article: Reducing climate risks with fast and complete energy transitions: applying the precautionary principle to the Paris agreement
Reducing climate risks with fast and complete energy transitions: applying the precautionary principle to the Paris agreement Open
Averting the climate catastrophe requires the transformation of the energy system. A wide range of energy transition pathways are being explored in literature, which limit peak heating during this century as likely as not to 2°C or 1.5°C. …
View article: Effects of car electronics penetration, integration and downsizing on their recycling potentials
Effects of car electronics penetration, integration and downsizing on their recycling potentials Open
Car electronics form an extensive yet untapped source for secondary critical raw materials. To seize their recycling potentials it is imperative to understand how the number and volumes of car electric and electronic (EE) devices are affec…
View article: Powering a Sustainable and Circular Economy—An Engineering Approach to Estimating Renewable Energy Potentials within Earth System Boundaries
Powering a Sustainable and Circular Economy—An Engineering Approach to Estimating Renewable Energy Potentials within Earth System Boundaries Open
This study proposes a method to estimate the appropriability of renewable energy resources at the global scale, when Earth system boundaries/needs and the human demand for chemical energy are respected. The method is based on an engineerin…
View article: Variability and Bias in Measurements of Metals Mass Fractions in Automobile Shredder Residue
Variability and Bias in Measurements of Metals Mass Fractions in Automobile Shredder Residue Open
The treatment of end-of-life vehicles generates large amounts of automobile shredder residue (ASR), a potential source of recycled metals. Reliable measurement methods are required to determine the composition of ASR and evaluate the resou…
View article: Variability and bias in measurements of metals mass fractions in automobile shredder residue
Variability and bias in measurements of metals mass fractions in automobile shredder residue Open
Measured mass fractions of various metals in individually digested test samples of automobile shredder light fraction (single_digestions_ppm.csv) and the calculated means and standard deviations of these (mean_sd_ppm.csv). For all metadata…
View article: Variability and bias in measurements of metals mass fractions in automobile shredder residue
Variability and bias in measurements of metals mass fractions in automobile shredder residue Open
Measured mass fractions of various metals in individually digested test samples of automobile shredder light fraction (single_digestions_ppm.csv) and the calculated means and standard deviations of these (mean_sd_ppm.csv). For all metadata…
View article: Historical Penetration Patterns of Automobile Electronic Control Systems and Implications for Critical Raw Materials Recycling
Historical Penetration Patterns of Automobile Electronic Control Systems and Implications for Critical Raw Materials Recycling Open
Car electronics form a large but poorly utilized source for secondary critical raw materials (CRMs). To capitalize on this potential, it is necessary to understand the mechanism in which car electronics enter and exit the vehicle fleet ove…
View article: Future e-waste scenarios
Future e-waste scenarios Open
This paper is published by the StEP Initiative, UNU ViE-SCYCLE, and UNEP IETC. THE STEP INITIATIVE The Solving the E-waste Problem (StEP) Initiative is a network of e-waste experts and a multi-stakeholder platform for designing strategies …
View article: Service Lifetime, Storage Time, and Disposal Pathways of Electronic Equipment: A Swiss Case Study
Service Lifetime, Storage Time, and Disposal Pathways of Electronic Equipment: A Swiss Case Study Open
Summary Product lifetime is an essential aspect of dynamic material flow analyses and has been modeled using lifetime distribution functions, mostly average lifetimes. Existing data regarding the lifetime of electronic equipment (EE) are b…
View article: A geological reconnaissance of electrical and electronic waste as a source for rare earth metals
A geological reconnaissance of electrical and electronic waste as a source for rare earth metals Open
The mining of material resources requires knowledge about geogenic and anthropogenic deposits, in particular on the location of the deposits with the comparatively highest concentration of raw materials. In this study, we develop a framewo…