Certification recognizes Opus One’s commitment to responsible luxury as part of global ESG leadership in the wine industry
June 25, 2025 (Oakville, CA) – Opus One is proud to announce the honor of receiving certification with the Butterfly Mark, a symbol of the Real Changemakers in luxury. Powered by Positive Luxury, The Butterfly Mark is only ever awarded to brands that meet higher and higher standards for people and nature. Opus One Winery has long stood at the intersection of old-world craftsmanship and modern innovation. Founded by Baron Philippe de Rothschild and Robert Mondavi, the winery seamlessly blends French tradition with California’s progressive ethos, a combination that is reflected not only in its wines, but also in its practices to leave a lasting impact.
The Butterfly Mark is awarded to companies that demonstrate a positive impact on the environment and society. Opus One Winery joins Positive Luxury’s Real Changemakers community of brands dedicated to driving positive change in the luxury industry and beyond. To earn the Butterfly Mark, Opus One underwent an expert-led, independent assessment which is built on the foundation of international agreements, global frameworks and standards, and even potential upcoming legislation. The certification thoroughly covers: Environment, Social and Governance. This involved providing evidence of the change Opus One has made and continues to make across a vast range of sustainability issues, including impact on key matters like climate, nature and water (Environment), treatment of workers and communities (Social), as well as responsible and ethical business management (Governance). Opus One has demonstrated these marks through:
- Napa Green Certifications: In 2021, Opus One became the first winery to receive both Napa Green Winery and Napa Green Vineyard certifications. These accolades recognize the winery’s efforts in energy conservation, water efficiency, waste reduction, and commitment to social equity.
- Regenerative Viticulture: The winery has implemented regenerative farming practices, including the use of cover crops, sheep grazing, and the introduction of bee colonies, to enhance biodiversity and soil health.
- Renewable Energy: Opus One sources 100% of its electricity from renewable sources through MCE’s Deep Green program, significantly reducing its carbon footprint.
- Water Management: The winery employs advanced water conservation techniques, such as low-flow fixtures and a rainwater catchment system, to minimize water usage.
Passing the assessment is a landmark moment in Opus One’s stewardship journey. To retain the Butterfly Mark, Opus One will have to re-certify every two years. That means, as standards rise, the winery is committed to continually improving performances to meet new standards. The Butterfly Mark certification signifies the winery’s steadfast commitment to transforming luxury, for the good of all.
For more information about Opus One’s sustainability initiatives and to plan a visit, please visit https://www.opusonewinery.com/sustainability/
About Opus One Winery
Opus One was born in 1978 from a visionary partnership between Baron Philippe de Rothschild of Bordeaux and Robert Mondavi of Napa Valley. Meeting at the storied Château Mouton Rothschild, the two vintners laid the foundation for a wine that would transcend borders: a singular Bordeaux-style blend crafted from Napa Valley grapes, brought to life through the collaboration of French and American winemakers. Bound by a shared commitment to excellence and innovation, they were not only creators of exceptional wines but also dedicated patrons of the arts. Their partnership was driven by both craftsmanship and culture, which led them to name their endeavor Opus One, a reflection of their first great composition as a wine created to be a work of art.
ABOUT POSITIVE LUXURY
Positive Luxury is a sustainability consultancy and home of the Butterfly Mark, a certification recognizing luxury brands demonstrating real change and positive impact on the planet and society. Learn more at positiveluxury.com.
THE BUTTERFLY MARK
The Butterfly Mark is an independent trust mark awarded to luxury brands, retailers, and suppliers that evidence tangible action to positively impact people and nature. It is only ever awarded to brands who are meeting higher and higher standards. These brands are called the Real Changemakers, brands taking serious, sustained, positive action.
