How big business is rewriting the U.S. sustainability story

The U.S. government under President Donald Trump has worked aggressively to roll back progress on many of the nation’s environmental policies, from its war on wind, to its recent gutting of Environmental Protection Agency regulations, to its undisguised efforts to seize control of foreign fossil fuel assets. But despite the headlines, many U.S. companies – including some of the world’s largest healthcare, technology and waste-management corporations – are sending a clear message: the green transition is not slowing down.

The U.S. companies that make up Corporate Knights’ first-ever USA 25 Most Sustainable Corporations ranking brought in more than $1.15 trillion in revenues in 2024, of which an average of 61% came from sustainable products or services. That included companies like Nvidia, whose super-efficient chips power much of the world’s AI infrastructure, and Tesla, which has single-handedly transformed the U.S. electric vehicle market.

Perhaps more notably, however, sustainable revenues as a share of the total are growing, and sustainable investments are poised to accelerate the transition. Michael Yow, director of rankings at Corporate Knights, points out that the average sustainable investment ratio for S&P 500 companies is less than 11%; for companies in this ranking, it is more than 62%. “It illustrates how sustainability leaders are already rewiring their business models for a low‑carbon economy while the broader market lags behind.”

The top company

Leading the ranking this year is Fluence (#1), a company out of Arlington, Virginia, that creates utility-scale energy-storage systems. Founded in 2018 from a partnership between Siemens, the German tech giant, and AES, the largest U.S.-based global power company, Fluence is one of a select group of companies playing a pivotal role in the shift to renewable power in the United States. The grid-level battery company currently has 296 projects globally storing 28.9 gigawatts of renewable energy.

Fluence doubled its sustainability revenues between 2022 and 2024 and earned a perfect sustainable investment score by pouring all its capital expenditure and research and development into new energy-storage solutions and supporting technology. In early 2025, the company announced “breakthrough” modular stacks that can store 30% more power over the same footprint as previous generations of the technology. Fluence, which also placed fourth in this year’s Global 100 ranking, is also deploying AI-optimized software to help maintain its infrastructure and to assist with bidding in the notoriously complex and volatile wholesale energy market.

The fast track

The companies with highest compound annual growth rate of sustainable revenue

Among the companies with the fastest-growing share of sustainable revenues was
Prologis (#17), a San Francisco–based real estate investment trust.
Prologis owns more than 5,800 facilities, mostly warehouses and commercial spaces,
spanning 1.3 billion square feet across 20 countries. In the last year, the company
secured sustainable building certifications for all the eligible buildings and since
2021 has achieved 626 megawatts of solar power and storage capacity across its portfolio.

Sustainable revenues still account for only about 19% of the company’s total revenues, but since 2022, those revenues have grown 239% annualized. Yow points out that a significant share of the buildings that did not qualify under the Corporate Knights Sustainable Economy Taxonomy in 2022 now do, thanks to the company’s efforts.

Nvidia (#10), the world’s largest company by market capitalization, also had one of the fastest-growing shares of sustainable revenue. It saw a 124% increase over 2022 for total sustainable revenues of about $75 billion. Most of those earnings are attributable to the company’s ultra-efficient computer chips that now make up the majority of global AI data-centre infrastructure. These chips are up to 25 times more energy efficient per watt than traditional, general-purpose central processing units and up to 300 times more water efficient than air-cooled computing architecture.

There was one more company, Bristol-Myers Squibb (#25), that registered an even higher sustainable revenue compound annual growth rate, at 342%, but as Yow explains, its circumstances are unique. Revenues at pharmaceutical companies in the ranking are considered sustainable if they come from the sale of drugs included on the World Health Organization’s Essential Medicines list. Bristol-Myers Squibb sells several of these medicines, but in 2022, a significant share of those revenues were not credited in full. This was because a significant portion of the cash flow from those revenues went toward share buybacks, dividend payments and senior executive compensation, rather than being reinvested in the company. Since 2022, the share of eligible revenues at Bristol-Myers Squibb has shifted, hence the increase.

Come-from-behind corporation

A company with a small percentage of sustainable revenue but high sustainable compound annual growth rate

At Hologic (#16), a healthcare company out of Massachusetts, about 19% of its $4.03 billion in 2024 revenues were sustainable, representing an annualized increase of 50% since 2022. This change is attributable to the increased sales of its medical solutions for women’s health, particularly breast cancer. Many of Hologic’s systems, including those used for imaging and biopsy, have been classified by the World Health Organization as “indispensable” for quality healthcare delivery.

Transition majors

Companies with small sustainable revenue but high sustainable investment

American Water Works Company (#19) is a 140-year-old company and the largest regulated provider of water and wastewater utilities in the United States. Based in Camden, New Jersey, and delivering services to more than 14 million people in 18 states, its share of sustainable revenues was small relative to the scale of its operation, but its sustainable investments were significant. Last year, the company reportedly invested $3.2 billion in infrastructure improvements (in 2024, the company brought in $4.6 billion in revenue). This included pipe replacement and water treatment upgrades, as well as remediation for PFAS (known as “forever chemicals”) that have been commonly detected in drinking water.

Another one of the senior companies on the list, the 146-year-old automotive manufacturer BorgWarner (#21), operating out of Auburn Hills, Michigan, also earned high marks for its sustainable investments. The company has been focused on developing new parts for electric vehicles and plug-in hybrids, including motors, transmissions and battery systems.

The pure-play behemoth

A large-cap pure-play company with high sustainable revenue and investment, but also penalties

Given this year’s refocusing of the methodology on sustainable revenues, investment and growth, it should come as little surprise that Tesla (#9) remains a fixture on the list. Now based in Texas, the company recorded $97.69 billion in revenues in 2024, 100% of which was registered as sustainable in the Corporate Knights methodology. It should be noted, however, that the company did suffer several penalties related to a $1.5-million settlement over the alleged mishandling of hazardous waste, and another to a fatality at its Texas Gigafactory.

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Waste-to-wealth winners

Companies at the forefront of the circular economy

Enviri (#11) is a Pennsylvania-based waste-management firm that specializes in complex environmental challenges. Across three divisions, it has recycled nearly 440,000 tons of hazardous material, 3.1 million tons of contaminated soil, and 85 million gallons of wastewater — in all, about 92% of the materials it collects. These materials are used to create the company’s “ecoproducts” such as cement additives, construction aggregate, asphalt and cost-effective alternatives to raw materials used in concrete and brick.

CMC (#22) is one of the primary suppliers of the steel rebar used to reinforce the concrete in buildings, bridges and roads across the United States. With 212 facilities, the Texas-based company boasts an impressive record in an industry that has, traditionally, had a large environmental footprint: 17 billion pounds of scrap metal saved from landfills, 82% less energy and 62% less carbon dioxide than traditional steelmaking, and 100% recycled steel in all of its products.

2026 USA 25 Most Sustainable Corporations