Plenty of wineries talk about sustainability. Fewer build their entire identity around it. Even fewer make it feel effortless. At St. Supéry Estate Vineyards & Winery, stewardship isn’t a marketing layer; it’s the foundation beneath every vine, vintage, and decision.

Drive through the Rutherford estate and the first thing you notice isn’t what’s planted; it’s what isn’t. The winery owns and farms three estate vineyards, two in Rutherford and one in the far reaches of northeast Napa Valley. Two-thirds of St. Supéry’s 1,600 acres remain in their natural state, a living buffer that supports biodiversity, wildlife, and healthier vineyards. More than 100 strategically placed boxes shelter owls, bluebirds, and bats. Sheep roam the hillsides of the Dollarhide Estate Vineyard each winter—nearly 900 of them—naturally managing grass for fire prevention while reducing tractor use. This is Napa Green in practice, not theory.

That long-term commitment has quietly earned St. Supéry a reputation as one of Napa Valley’s sustainability leaders. The winery has been Napa Green Vineyard Certified since 2008, Napa Green Winery Certified since 2012, and recently advanced from Silver to Gold member status with the International Wineries for Climate Action, a global benchmark for climate responsibility in wine. Along the way, St. Supéry has received a California Green Medal, international sustainability awards, and recognition for sustainable wine tourism.

But the real story is how these choices add up in the glass. “Sustainability and the pursuit of quality are at the heart of our farming and winemaking philosophy,” says winemaker Brooke Shenk. “We believe that thoughtful stewardship of the land leads directly to higher-quality wines.”

The numbers support that belief. More than 1,400 metric tons of CO₂ are sequestered annually by the estate’s vineyards. Solar arrays offset roughly 80 percent of the winery’s energy use, supplemented by electric Monarch tractors that eliminate thousands of pounds of emissions each year. Water consumption has been reduced by 56 percent in less than a decade, with all process water recycled back into the landscape and rainfall captured for vineyard irrigation. Even the bottles themselves are lighter now, with select wines shedding more than 12 percent of their glass weight.

Behind the scenes, St. Supéry is also helping push the region forward. As an active hub for the North Bay Zero Waste Collective, the winery works with neighboring producers to divert plastics, corks, and packaging from landfills—nearly 600,000 pounds so far. The removal of foil capsules alone eliminated hundreds of thousands of units and nearly three tons of CO₂, while kegged wines save tens of thousands of bottles.

Sustainability here extends to community as well, from fundraising hundreds of thousands of dollars for Napa Valley charities to partnerships supporting ocean conservation, education, and local schools.

At St. Supéry, sustainability isn’t just a badge. It’s a way of working, refined over decades. The proof is in wines; they are not only responsibly made, they are genuinely delicious.

For more information: stsupery.com