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St. Supéry
Novato and Sonoma based SolarCraft, a leading North Bay clean energy provider for over 35 years, recently completed the design and installation of a 177.5 kW DC solar electric system addition at St. Supéry Estate Vineyards & Winery in Rutherford, CA.
St. Supéry originally installed a 328.6 kW system in 2015 and with these additional panels, the winery has expanded its solar productivity to further reduce their carbon footprint and increase their utility savings even more. The 177.5 kW addition combined with the existing system brings St. Supéry’s solar production to 506.1 kW offsetting nearly 100% of the winery’s energy bills.
The solar power system addition consists of 473 high-efficiency 375-watt solar panels, producing 220,629 kWh annually. Partially roof mounted, the majority of the photovoltaic system add-on is mounted on multiple, custom engineered solar structures over the winery’s production area.
Environmental stewardship is incredibly important at St. Supéry, a winery that is certified Napa Green for both their Land (since 2008) and Winery (since 2012). They strive each day to “walk the walk” in the vineyards, in the cellar and in business practices. “This is an important step in our continuous improvement required for Napa Green recertification. Napa County permitting took over two years and we are thrilled to see this finally come to fruition,” says St. Supéry CEO Emma Swain.
As a 100% estate winery, St. Supéry has complete control over how their grapes are grown and how their wine is made from harvest through bottling. Through their commitment to sustainable winery and farming operations, they are protecting the land and environment for future generations.
Over 156 metric tons of carbon dioxide will be eliminated during the life of the solar power system addition. This impact is equivalent to removing air pollution produced by over 387,000 miles of driving annually or the pollutants removed by 204 acres of trees in one year.
About SolarCraft
SolarCraft is 100% Employee-Owned and one of the largest green-tech employers based in the North Bay for over 35 years. SolarCraft delivers Clean Energy Solutions for homes and businesses including Solar Electric, and Battery / Energy Storage. With over 8,000 customers, our team of dedicated employee-partners is proud to have installed more solar energy systems than any other company in the North Bay. Visit solarcraft.com to learn more or follow along @SolarCraft on Facebook and Twitter.
About St. Supéry Estate Vineyards & Winery
St. Supéry Estate Vineyards and Winery is a 100% Estate Grown, sustainably farmed winery located in the renowned Rutherford growing region in the heart of Napa Valley, focusing on sauvignon blanc and red Bordeaux varieties. The winery received the Great Wine Capitals Award for Sustainable Wine Tourism Practices in 2018, is Certified Napa Green for both Land and Winery and is a California Green Medal winner for Sustainable Winegrowing Leadership.
St. Supéry’s reputation is based on the meticulous care of its Napa Valley vineyard properties, and the winery’s goal of producing the highest quality wines is enhanced by supporting the estate’s biodiversity and sustainability for generations to come.
About Napa Green
The Napa Green Land and Winery programs offer the opportunity for comprehensive third-party certification of rigorous soil to bottle standards for sustainable winemaking and grape growing. Napa Green members stand as leaders exemplifying that sustainability and caring for nature elevates quality and experience for employees, customers and community, now and in the future.
About Napa Green: The Napa Green 501c3 is a global leader in sustainable winegrowing, setting the highest bar for sustainability and climate action in the wine industry. Napa Green facilitates whole system soil to bottle certification for wineries and vineyards, and provides the expertise, boots-on-the-ground support, and resources to continually improve. Learn more at https://napagreen.org/participating-members/.
Anna Brittain
Napa Green
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Thanks to the @naparegister for publishing this Climate Connection contribution from @napagreen’s Vineyard Program Director, Ben Mackie (@soilrainandhope) highlighting the biodiversity @grgichhillsestate.
If you loved this article, you’ll love our Birds, Bees & Butterflies: Biodiversity in the Vineyard workshop happening today!
#climateaction #regenerativeag #regenerativeviticulture
Friday night dinner dilemma?
Order takeout from @southsidenapa using promo code DONATE and 20% of your order will be donated to @napagreen.
It’s a win: win! You get dinner and @napagreen gets funding to contribute our impactful climate action work in Napa Valley.
Order online or preorder your Fried Chicken Friday pickup for February 27, 2026. Don’t forget to pair it with Napa Green certified wine! 🍽️ 🍷
#dineanddonate #nonprofit #napavalley
Join us Thursday, February 26 to learn about biodiversity in the vineyard.
🍇 Ivo Jeramaz, Winemaker & VP of Vineyards and Production at @grgichhillsestate, will welcome us to the beautiful property and illustrate the various implementation of habitat diversity they have undertaken at the American Canyon ranch.
🍇 Jo Ann Baumgartner & Sam Earnshaw from @wildfarmalliance will provide insight on how to maximize bird habitat and establish hedgerows to support the local ecology.
🍇 Erin Arnsteen from the @monarchjointventure will outline how pivotal vineyard acreage can be to support the dwindling Western Monarch populations.
🍇 Cori Carlson, owner of @napapastureprotein, will explain the ecological goals of grazing a vineyard.
🍇 Ruby Stahel from the @naparcd will join us to discuss the various resources that the RCD has to support habitat enhancement on Napa properties.
🍇 @soilrainandhope from @napagreen will talk about bees!
➡️ Ticket link in bio.
#biodiversity #regenerativeag #regenerativeviticulture
Learn about the herd of cattle calmly grazing the vineyards @ruddestate, contributing to soil health and biodiversity, in our latest post from @soilrainandhope.
➡️ Link in bio.
#climateaction #regenerativeag #regnerativeviticulture #soilhealth
Thanks to @naparegister and @kcuz for this great article about the @regenerativeviticulture and @napagreen #OneBlockChallenge field day @celaniwines.
We had a great time engaging with attendees about opportunities to implement regenerative practices in their vineyards!
If you’re regenerative curious or want to learn more head to the link in our bio!
#climateaction #regenerativeviticulture
Congratulations on @napagreen Vineyard Certification to @shadybrookestatewinery!
Nestled in the picturesque heart of Coombsville, Shadybrook Estate, has shown a deep commitment to regenerative viticulture and climate action. Visit to see the natural beauty of this hidden gem.
#climateaction #regenerativeviticulture #napagreen
We love the biodiversity in this @grgichhillsestate American Canyon Vineyard!
Come learn how to integrate biodiversity in your vineyard on February 26 at this workshop with @napagreen, @grgichhillsestate, @wildfarmalliance, @monarchjointventure, @napapastureprotein and @naparcd.
➡️ Ticket link in bio.
#Biodiversity #RegenerativeAg #RegenerativeViticulture
Congratulations to @rutherfordhillwinery on achieving @napagreen Winery Recertification!
At Rutherford Hill Winery, sustainability is apparent in all of their practices. The facility is 100% solar-powered and even contributes clean energy back to the local grid. Additionally, they prioritize natural solutions, like Owl Boxes and organic farming.
Visit to experience for yourself these exceptional wines that invest in our planet’s future.
#climateaction #winetasting #sustainablewine
Biodiversity is essential for any resilient vineyard.
Join us on February 26, 2026 at @grgichhills American Canyon to learn how to integrate biodiversity within vineyard blocks.
Experts from @wildfarmalliance @monarchjointventure @napapastureprotein and @naparcd will be on hand to discuss all the various species that a vineyard can support.
Ticket link in bio.
#biodiversity #regenerativeag #regenerativeviticulture
Learn how @closduval used Verallia lightweight glass to help reduce their environmental impact and meet their sustainability goals.
Read more at napagreen.org
#climateaction #lightenup
What a great #OneBlockChallenge first field day!
Not only was it a gorgeous day with a great community of people we also heard from some awesome speakers:
🍇 @cainethompson about the @regenerativeviticulture foundation and the implementation practices
🍇 Jordan Lonberg @coastalvineyardcare about continuous improvement and shifting the industry mindset
🍇 @soilrainandhope about the practical aspects of the regeneratives practices and how @napagreen and @naparcd can provide support
🍇 Dustin Owen @celaniwines about their their vineyard’s regenerative journey
Thanks to all who attended and to @celaniwines for hosting!
➡️ To learn more about regenerative vineyard practices or to enroll in either the One Block Challenge or Napa Green Vineyard certification, head to the links in our bio.
#regenerativeag #climateaction
Join our first @napagreen and @regenerativeviticulture One Block Challenge Field Day to hear from this great lineup of speakers, meet other participating growers, and learn how to take the first steps in implementing regenerative practices.
We look forward to seeing you on February 12, 2026 at @celaniwines to connect learn more.
Registration link in bio.
#regenerativeag #regenerativeviticulture #soilhealth
It’s hard to believe it’s already been 3 years since @marisataylorwines joined our team, but time flies when you’re having fun (and wine)!
Join us in celebrating Marisa Taylor, who is an accomplished winemaker and sustainability leader with over two decades of experience in the wine industry, and also the Napa Green Winery Program Manager, where she partners with wineries across Napa Valley to advance meaningful environmental stewardship and sustainable winegrowing practices.
Thank you for bringing your passion and positive energy to our team every day!
The team celebrated with our @napagreen certified #NapaNeighbors @rombauervineyards.
#winebusiness #womeninwine #sustainablewine
Join us for the @napagreen and @regenerativeviticulture #OneBlockChallenge first field day on February 12, 2026 from 10-12 @celaniwines.
This event is open to all winegrowers and vintners who are curious about regenerative viticulture but space is limited so register today at the link in our bio.
#soilhealth #regenerativeviticulture
Congratulations to @domainecarneros for receiving the @napachamberofcommerce Sustainable Business of the Year award presented by @mcecleanenergy.
Thank you for your leadership, innovation and dedication to sustainability and the community!
#greenbusiness #winebusiness #napagreencertified #napagreen
@antinorinapavalley family’s winemaking legacy spans over six centuries. To ensure that legacy continues, they have a deep commitment to sustainability and the care of the land for future generations.
Hear why Antinori is exploring the use of @hopenvironmental1965 soil compostable tie tape in the vineyard.
#regenerativevineyard #greenbusiness #sustainablewinery #greenpurchasing #landstewardship
