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Aggregating Demand for Three Fundamental Resources to Avoid Burden-Shifting in Climate Policy
Jennifer L Hawkin1, Julian M Allwood1
1Department of Engineering, University of Cambridge, Trumpington Street, Cambridge CB2 1PZ, U.K.
Environmental Science & Technology
|March 26, 2026
Summary
Most net-zero climate change plans rely on unproven "invisible technology substitutions." These plans risk resource shortages, highlighting the need for realistic mitigation strategies that include policy and demand changes.
Area of Science:
- Climate Change Mitigation
- Sustainable Resource Management
- Technological Innovation Assessment
Background:
- Current climate change mitigation strategies often assume unconstrained economic growth, relying heavily on technological advancements for emissions reduction.
- The concept of "invisible technology substitutions" aims to maintain high-resource lifestyles by replacing high-emission activities with low-emission alternatives, but their feasibility is frequently overestimated.
Purpose of the Study:
- To assess the resource demands of proposed net-zero climate change plans against global availability.
- To identify the fundamental resources critical for net-zero transitions and evaluate the risks of their potential shortages.
- To propose an alternative mitigation framework grounded in realistic resource availability and end-user engagement.
Main Methods:
- Development of a comprehensive calculator based on physical models of 170 processes.
- Literature review to derive process models and assess resource requirements.
- Comparison of aggregated resource demands from net-zero plans (business, government, industry) with projected global availability for 2050.
Main Results:
- All net-zero plans fundamentally depend on emissions-free electricity, biomass, and carbon storage.
- Aggregated demands from most net-zero proposals significantly exceed likely global availability of these key resources by 2050.
- Current climate policies relying on "invisible technology substitutions" face substantial risks of under-delivery due to improbable resource expansion requirements.
Conclusions:
- Feasible zero-emission futures require a paradigm shift beyond technological fixes, emphasizing end-user participation and changes in economic demand.
- Current international policy discussions largely overlook the critical role of resource availability and demand-side management in achieving climate goals.
- An alternative mitigation plan, informed by credible resource forecasts, reveals opportunities for policy, service, and financing innovations.
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