CCA and Copper Conservation:How Smarter Building Materials Help Conserve Copper for Our Clean-Energy Future

BRENTWOOD, Tenn., June 10, 2025 /PRNewswire/ -- When people hear the word "sustainability," they often think of electric vehicles, solar panels, and wind turbines. But there's another, less obvious opportunity to shape the future of sustainable infrastructure: building wire. In this article, we look at how Copperweld—a leader in bimetallic conductor manufacturing—is helping to ensure that copper, one of the world's most critical materials, goes further where it's needed most.

A Quarter-Million Miles of Copper Conservation

Copperweld revolutionized the building wire industry when it entered the market over seven years ago — a move that has since scaled dramatically. By the end of 2025, Copperweld will have produced 250,000 miles of Copper-Clad Aluminum (CCA) NM-B Building Wire. To put that in perspective: Earth is about 24,901 miles around at its equator. That means the CCA NM-B Copperweld has produced would circle the globe 10 times. It's also enough wire to stretch from the Earth to the Moon — and still have miles left over. But what really matters isn't the mileage — it's the copper that was conserved and redirected to where it's needed most.

Copper Savings with Global Impact

Unlike solid copper wire, Copperweld's NM-B combines a conductive copper surface bonded to an aluminum core — a purposeful design that ensures stable electrical connections while dramatically reducing copper usage. With this construction, Copperweld CCA uses 1/6 the amount of copper as solid copper wire of equivalent ampacity. As a result, Copperweld has conserved an estimated 58.78 million pounds of copper from just this single product line. That's enough copper to:

• Wire over 320,000 electric vehicles (EVs)²
• Equip 290,000 residential solar installations³
• Construct 47 to 118 utility-scale solar farms (depending on size)⁴

And that's only from the NM-B wire.

Why Copper Matters More Than Ever

In 2023, the U.S. Department of Energy classified copper as a Critical Material, citing a "high risk of supply chain disruption" due to skyrocketing demand. Today, nearly half of U.S. copper is used in construction. Within that, building wire alone consumes 20% of the national supply⁵ — almost as much as all electronics and tech products combined.

As EVs, solar power, and electrification expand, demand for copper will soar. EVs use four times the copper of gas-powered vehicles. By 2030, the U.S. is projected to produce more than four times as many electric vehicles as single-family homes.⁶

Copper Conservation Strengthens the Economy

Beyond environmental benefits, copper conservation plays a pivotal role in bolstering economic resilience. By optimizing the use of copper in building wire, we ensure that this critical resource remains available for other high-demand sectors, such as renewable energy, electric vehicles, and advanced manufacturing. This strategic allocation supports the expansion of these industries, leading to job creation and sustained economic growth.

As the U.S. Environmental Protection Agency notes:

"The drive for efficient handling and use of recycled materials spurs innovation, a key to long-term economic growth."⁷

By embracing Copper-Clad Aluminum (CCA) in building wire, we not only conserve a vital resource but also lay the groundwork for a more robust and diversified economy.

Building Wire Can Be a Conservation Tool

That's why smarter material choices in basic construction applications matter. By upsizing CCA conductors by two gauges (in most instances) per NEC guidance, CCA building wire performs comparably to traditional copper wire—at a lower cost, and with a much lower impact on copper supplies.

If every builder switched to Copperweld's CCA NM-B, the U.S. could save hundreds of millions of pounds of copper in the coming years. That's not just good economics — it's a sustainability strategy.

A Simple Decision with a Large Impact

In an era of scarce resources and urgent climate goals, even the simplest building products can help shape the future. Copperweld CCA Building Wire is a smart material choice that conserves supply-critical copper and supports the industries shaping our future.

The market is catching on. Adoption of Copperweld CCA NM-B is rising rapidly. It's not just a trend — it's a shift toward more responsible materials. By choosing CCA building wire, contractors and developers aren't just saving money — they're helping reserve copper for the technologies that will power tomorrow.

Learn more about Copperweld building wire products.

Copperweld is the world leader in bimetallic wire and cable specializing in power, grounding, and signal conductors for building construction, power grid, utilities, communications, and transportation. For over 100 years, their mission has been to make the most reliable, sustainable, and innovative wire and cable products on the market. Copperweld's metallurgical expertise and engineered solutions result in bimetallic products that enhance performance, extend service life, conserve copper, improve energy efficiency, and reduce theft incentives. Their American-made products are manufactured in the USA, and the culture of excellence and innovation that inspired them over a century ago still drives them today.

Sources

1. Copper weight per foot in 12/2 NM-B wire: Based on publicly available manufacturer data, 12/2 NM-B copper building wire typically weighs 61-64 lbs per 1,000 ft. The remaining copper conservation rate used in this article — 0.04453 lbs per foot — is based on Copperweld engineering analysis of conductor design and material composition.
   https://www.southwire.com/wire-cable/building-wire/nm-b-cable/p/13056755
2. Copper in electric vehicles: International Energy Agency, Copper Alliance – EVs can contain ~183 lbs (83 kg) of copper.
   https://copperalliance.org/resource/copper-and-electric-vehicles/?lang=en
3. Copper in residential solar systems: National Renewable Energy Laboratory, Copper Alliance – Residential systems range from 150 to 250 lbs of copper depending on setup.
   https://copperalliance.org/resource/solar-energy/?lang=en
4. Copper in utility-scale solar farms: Copper Development Association, Copper Alliance – Utility-scale PV installations use ~2.5 tons (5,000 lbs) of copper per megawatt. Farms typically range from 100–250 MW, requiring 500,000 to 1.25 million pounds of copper per project.
   https://help.copper.fyi/hc/en-us/articles/4407687865490-Copper-in-photovoltaic-power-systems
5. Building wire copper consumption: U.S. Geological Survey, Copper Development Association – Building wire accounts for 20% of all copper used in U.S. construction.
   https://pubs.usgs.gov/periodicals/mcs2023/mcs2023-copper.pdf
6. EVs vs. single-family homes projection: Edison Electric Institute projects 7.7 million EVs sold annually in the U.S. by 2030. Congressional Budget Office forecasts average of 1.68 million housing starts per year. https://www.eei.org/en/news/news/all/eei-projects-78-million-evs-will-be-on-us-roads-in-2035 and https://www.cbo.gov/publication/60727
7. Copper efficiency and economic growth: U.S. Environmental Protection Agency – "The drive for efficient handling and use of recycled materials spurs innovation, a key to long-term economic growth." https://archive.epa.gov/wastes/conserve/tools/rmd/web/html/econ.html

SOURCE Copperweld