The Hidden Cost of Copper
“If you learn only methods, you’ll be tied to your methods, but if you learn principles
you can devise your own methods.”
Introduction
Copper is an integral part of our current approach to renewable energy. Few materials conduct electricity as effectively, making it central to our vision of a sustainable future.
But can a system that depends on a finite resource––one that often destroys ecosystems––truly be sustainable? Or are we, once again, relying on familiar methods instead of pursuing more innovative and less harmful solutions, just as we did in our reliance on fossil fuels?
What is copper?
Copper is a chemical element and one of the oldest metals used by humans, with evidence of its use dating back over 10,000 years. It is antimicrobial, resistant to corrosion, and an excellent conductor of both electricity and heat, making it useful in a wide range of applications, including electronics, plumbing, and cookware (Copper Development Association Inc., n.d.).
Because of its strength and versatility, copper is also widely used in renewable energy systems such as wind turbines, solar thermal plants, and electric vehicles (EVs) (International Copper Study Group, 2020). Electric vehicles, widely viewed as a solution to climate change, require two to four times more copper than conventional combustion engine vehicles, using 84 to 183 pounds per vehicle. This figure does not account for the additional copper required for charging infrastructure, with the number of charging stations projected to reach around five million in the next decade. This increased demand is dramatically accelerating global reliance on the metal (Copper Development Association Inc., n.d.).
Extraction & toxicity
A common method of extracting copper ore is open-pit mining, which involves removing large quantities of rock from the earth, often with the use of explosives. Holes are drilled into the rock and filled with explosives, which are then detonated to break it apart. The fragmented material is hauled by large vehicles to a processing site (University of Arizona Superfund Research Center, n.d.).
The process of separating the ore from the surrounding rock releases a variety of toxic chemicals, including mercury, lead, sulfuric acid, and PCBs (Montgomery, 2025). These substances can contaminate surrounding soil and water, posing serious risks to ecosystems and nearby communities.
Ecological impact
Open-pit copper mines can be nearly a mile in diameter and several thousand feet deep. Depending on location, deforestation may also be required to make the site accessible (Federal Metals, n.d.). In addition to this irreparable physical destruction of land, mining leads to significant loss of biodiversity and wildlife habitat. Recent studies show that copper mining has a greater impact on biodiversity than any other clean energy metal (ISS ESG, 2022).
Extracting and processing copper ore creates acid mine drainage. This method can contaminate local water resources for surrounding communities, in extreme cases destroying farmland, damaging aquatic systems, and rendering areas uninhabitable. Additional land is also required to store mine tailings, which introduces further environmental risks (ISS ESG, 2022).
Beyind chemical pollution, copper mining and processing require large amounts of energy and water. Over half of global copper mines are located in water-stressed areas, often competing with local communities for limited resources and contributing to conflict and unrest (ISS ESG, 2022).
Regulatory oversight does not always ensure that decisions are based on scientific evidence. For example, in May 2016, the U.S. Fish and Wildlife Service approved a mine in southern Arizona. However, internal agency scientists had concluded that the project would cause irreparable harm to the already endangered jaguar, and their findings were later overridden at a higher level within the agency (Center for Biological Diversity, n.d.). These impacts raise important questions about whether a system that depends on such environmental costs can truly be considered sustainable.
Economic & social impact
The copper industry employs more than one million people and contributes billions of dollars to the global economy. Throughout history, copper has played a role in economic and societal progress and often serves as a backbone for surrounding communities (International Copper Association, n.d.).
However, mining projects also bring significant social and economic risks. Many copper mines are located in water-scarce regions—over half worldwide—leading to conflict over water use, particularly in agricultural areas and communities already facing water and air pollution (Riedl et al., 2026).
Mining can also create boom-and-bust cycles if a community becomes reliant on a single non-renewable industry. In smaller communities, a large mine and influx of workers can overwhelm local services, housing, roads, and infrastructure. Some studies suggest that mining has left certain communities worse off both economically and environmentally (Riedl et al., 2026). Increased traffic and pollution can also harm other industries that communities depend on, such as tourism and outdoor recreation. Additionally, many mines are operated by multinational corporations based outside the region. These operations do not necessarily generate long-term economic benefits for local communities, nor do they guarantee sustained investment in the area (Casella & Formenti, 2022).
While some companies prioritize corporate engagement, transparency, and community involvement, these practices are not legally required for mining projects to proceed. Tribal Nations and Native American communities are disproportionately affected, as a high percentage of mineral mines are located within 35 miles of reservations (Riedl et al., 2026).
Alternatives to copper
The contrasting perspective of "just mine it" and "stop mining it" highlight the danger of narrow thinking when developing solutions for a sustainable future. Focusing on a single method does not address the broader challenges of copper mining or the transition to renewable energy.
While copper is currently essential for accelerating the shift to clean energy, alternative materials are emerging. Aluminum, for example, is lighter, cheaper, and more abundant than copper, though it is only about 60% as conductive. However, research conducted at the Pacific Northwest National Laboratory is exploring ways to improved aluminum's electrical conductivity through advanced modeling and material design, making it a poetentially viable alternative for applications such as power grids and vehicles (Freibott, 2022).
In addition to advances in aluminum, recent breakthroughs in carbon nanotubes show further promise. These materials can now be spun into conductive fibers, films, and wires, offering a potential alternative to traditional metals. This emerging material may allow for the development of lighter, more efficient, and less resource-intensive energy systems, supporting increasing energy demands while minimizing the environmental impact associated with copper
mining (“Carbon Nanotube Material Replaces Copper,” 2025).
Summary
If we focus only on methods—like extracting more copper—we limit ourselves to the same cycle of environmental and social harm. But if we focus on principles, we open the door to alternatives that are not only efficient, but truly sustainable. As demand for renewable energy continues to grow, it is not enough to replace one resource with another. Instead, we must rethink how energy systems are designed, considering both their long-term impacts and the materials they
depend on.
Sources
Carbon nanotube material replaces copper, accelerating global electrification infrastructure. (2025, December 25). Sustainability Directory. https://news.sustainability-directory.com/innovation/carbon-nanotube-material-replaces-copper-accelerating-global-electrification-infrastructure/
Casella, B., & Formenti, L. (2022). Mining foreign direct investments and local technological spillovers. In A. Daly, D. Humphreys, J. Raffo, & G. Valacchi (Eds.), Global challenges for innovation in mining industries (pp. 52–87). Cambridge University Press.
Copper Development Association Inc. (n.d.). Electric vehicles. https://www.copper.org/environment/sustainable-energy/electric-vehicles/
Center for Biological Diversity. (n.d.). Rosemont copper mine.
https://www.biologicaldiversity.org/campaigns/rosemont/
Federal Metals. (n.d.). How does copper mining affect the environment? https://federalmetals.ca/how-does-copper-mining-affect-the-environment/
International Copper Study Group. (2020). The world copper factbook 2020.
Freibott, A. (2022, June 29). Cooking up a conductive alternative to copper with aluminum. Pacific Northwest National Laboratory. https://www.pnnl.gov/news-media/cooking-conductive-alternative-copper-aluminum
ISS ESG. (2022, November 24). Copper or robber: Supply risks and ESG issues. ISS Governance. https://insights.issgovernance.com/posts/copper-or-robber-supply-risks-and-esg-issues
International Copper Association. (n.d.). Society & economy. https://internationalcopper.org/policy-focus/society-economy/
Montgomery, E. (2025, February 21). How copper mines pollute. Environment America Research & Policy Center. https://environmentamerica.org/center/articles/how-copper-mines-pollute/
Riedl, D., Saha, D., & Balleny, L. (2026, January 5). A new era of U.S. mineral mining must put communities first. World Resources Institute. https://www.wri.org/insights/us-critical-mineral-mining-community-impacts?utm_source=chatgpt.com
University of Arizona Superfund Research Center. (n.d.). Copper mining and processing: Processing copper ores. https://superfund.arizona.edu/resources/learning-modules-english/copper-mining-and-processing/processing-copper-ores
