Short answer

Prioritize materials with transparent and sustainable sourcing, and design for circularity to mitigate risks associated with critical metal supply for green technologies.

Field: Resource Management
Source: Habitable Planet (2025)
Method: Literature Review and Synthesis
Evidence: Strong effect

The global energy transition hinges on securing a stable supply of critical metals, necessitating a balanced approach to both terrestrial and emerging deep-sea extraction, prioritizing sustainable practices and circular economy principles. This resource management research insight is drawn from a 2025 study published in Habitable Planet. Using Literature review and synthesis, researchers explored how this design variable affects real-world outcomes. The key design takeaway: Prioritize materials with transparent and sustainable sourcing, and design for circularity to mitigate risks associated with critical metal supply for green technologies.

Study

Resource ManagementNew This WeekStrong effect

Critical Metals for Green Tech: Balancing Terrestrial and Oceanic Extraction for Energy Transition

Habitable Planet · 2025

Key Findings

01Critical metals like REEs, Li, Co, Cu, Ni, and PGEs are indispensable for renewable energy technologies (batteries, wind turbines, solar panels) and electric vehicles.
02Terrestrial deposits are the current primary source, but deep-sea deposits (nodules, crusts, sulfides, phosphorites, muds) represent significant potential future sources.
03Exploitation of marine mineral deposits poses substantial environmental risks, including pollution and habitat destruction, alongside challenges posed by climate change.
04A stable supply of these metals is paramount for the low-carbon economy, requiring a strategic balance between terrestrial mining and deep-sea resource development, with strong emphasis on environmental protection.
05Sustainable strategies, including recycling, supply chain diversification, and circular economy principles, are key to a resilient energy transition, supported by policy, technology, and ethical practices.

Application

Design takeaway

Prioritize materials with transparent and sustainable sourcing, and design for circularity to mitigate risks associated with critical metal supply for green technologies.

How to apply

When selecting materials for energy-related products, research the origin and supply chain risks of critical metals. Investigate opportunities for using recycled content or alternative materials. Design products for disassembly and material recovery.

Project actions

01When choosing materials for your design project, research where they come from and if they are considered 'critical'.
02Consider how your product can be repaired, reused, or recycled to reduce the need for new raw materials.
03Investigate the environmental impact of extracting the materials you plan to use.

Method & Evidence

AimWhat are the primary terrestrial and oceanic sources of critical metals essential for green technologies, and what are the associated environmental and supply chain challenges that must be addressed for a sustainable global energy transition?

MethodLiterature Review and Synthesis

ProcedureThe study consolidates existing research on terrestrial and oceanic critical metal deposits, analyzes their geological characteristics, and reviews the environmental impacts and logistical challenges associated with their extraction. It also examines strategies for ensuring supply chain stability and promoting a circular economy.

ContextGlobal Energy Transition, Green Technology, Resource Geology, Environmental Science

Variables

IV["Type of critical metal deposit (terrestrial vs. oceanic)","Extraction method (current terrestrial vs. potential deep-sea)","Sustainability strategy (recycling, diversification, circular economy)"]

DV["Supply chain stability for critical metals","Environmental impact of metal extraction","Feasibility of global energy transition"]

CV["Demand for critical metals in green technologies","Technological advancements in extraction and recycling","Global policy frameworks for resource management"]

Strengths & Limitations

Strengths

+Provides a comprehensive overview of both terrestrial and oceanic sources of critical metals.
+Highlights the interconnectedness of resource availability, environmental impact, and the energy transition.

Limitations

The availability and cost of deep-sea mining technologies are still uncertain, making it difficult to fully assess their long-term feasibility compared to established terrestrial mining.

Reliability & validity

The study's reliability stems from its synthesis of existing peer-reviewed literature. Validity is supported by the broad scope covering geological, environmental, and economic aspects of critical metal supply for the energy transition.

Think critically

Given the environmental risks of deep-sea mining, to what extent should it be pursued as a solution for critical metal supply, and what alternative strategies (e.g., enhanced recycling, material substitution) could mitigate reliance on new extraction?

Design Principles

"Design for Resource Security and Circularity: Select and utilize materials in a manner that ensures long-term availability, minimizes environmental impact throughout the product lifecycle, and facilitates material recovery and reuse."

Designers and engineers rely on a consistent and ethically sourced supply of materials for green technologies. Understanding the geological origins, extraction challenges, and environmental impacts of critical metals is crucial for making informed material choices and developing sustainable product lifecycles.

What This Means for Your Design

We need special metals for green tech like electric cars and solar panels. These metals come from the ground and the deep sea. Mining the deep sea can harm the ocean. To make sure we have enough metals for a clean energy future, we need to be smart about where we get them, protect the environment, and reuse materials as much as possible.

How to use in your project

1.Reference this study when discussing the material choices for your design project, particularly if they involve critical metals for green technologies.
2.Use the findings to justify your selection of materials based on supply chain security and environmental considerations.

Add to My Project

Quick Cite

Paragraph starter

The global energy transition relies heavily on critical metals such as rare earth elements, lithium, and cobalt, essential for technologies like electric vehicles and renewable energy systems (Balaram & Santosh, 2025). While terrestrial deposits remain the primary source, deep-sea environments offer significant potential reserves. However, the exploitation of these marine resources presents considerable environmental risks, including habitat destruction and pollution. Therefore, securing a stable and sustainable supply chain necessitates a balanced approach that integrates responsible terrestrial extraction with carefully managed deep-sea exploration, underpinned by robust recycling initiatives and circular economy principles to ensure a resilient low-carbon future.

Source

Habitable Planet

Critical metal deposits in terrestrial and oceanic environments and the Global Energy Transition

journal · 2025

View source

Questions About This Research

What does the research say about critical metals for green tech: balancing terrestrial and oceanic extraction for energy transition?: Prioritize materials with transparent and sustainable sourcing, and design for circularity to mitigate risks associated with critical metal supply for green technologies. Evidence: Habitable Planet (2025).
Why does "Critical Metals for Green Tech: Balancing Terrestrial and Oceanic Extraction for Energy Transition" matter for design?: Designers and engineers rely on a consistent and ethically sourced supply of materials for green technologies. Understanding the geological origins, extraction challenges, and environmental impacts of critical metals is crucial for making informed material choices and developing sustainable product lifecycles.
How can designers apply this research?: Prioritize materials with transparent and sustainable sourcing, and design for circularity to mitigate risks associated with critical metal supply for green technologies.
What were the main findings?: Critical metals like REEs, Li, Co, Cu, Ni, and PGEs are indispensable for renewable energy technologies (batteries, wind turbines, solar panels) and electric vehicles.. Terrestrial deposits are the current primary source, but deep-sea deposits (nodules, crusts, sulfides, phosphorites, muds) represent significant potential future sources.. Exploitation of marine mineral deposits poses substantial environmental risks, including pollution and habitat destruction, alongside challenges posed by climate change.. A stable supply of these metals is paramount for the low-carbon economy, requiring a strategic balance between terrestrial mining and deep-sea resource development, with strong emphasis on environmental protection.
What research method was used?: Literature Review and Synthesis.
How strong is the evidence?: Evidence strength is rated Strong effect, based on a 2025 journal from Habitable Planet.
What should I do differently in my next project?: When selecting materials for energy-related products, research the origin and supply chain risks of critical metals. Investigate opportunities for using recycled content or alternative materials. Design products for disassembly and material recovery.
What are the limitations?: The study is an overview and does not provide detailed quantitative data on the economic viability or precise environmental impact of specific deep-sea mining operations. The technological feasibility and scalability of deep-sea extraction are still under development.