Meet the Napa Winery Using Solar Power to go “Off-Grid”

California’s wine industry is expected to face unprecedented climate related challenges in the coming years. Learn how one leading winery is taking action.

A Napa winery, Domaine Carneros, who installed the biggest solar power project of any winery in the world back in 2003, will now be the fourth winery in California to have a microgrid, allowing it to operate independently off-grid for up to a week in case of a power outage.

The winery, a producer of both sparkling wines and Pinot Noir on about 400 acres, is on track to complete its microgrid in November 2022.

The Domaine Carneros solar microgrid project

Winner of the 2020 Climate Champion award in the business category from Napa Climate NOW!, a local citizens’ group, and a 2019 California Green Medal Business Award, and a Certified California Sustainable Winery since 2015, it’s the US outpost of Taittinger, the famous Champagne producer in France founded in 1732.

See also: How climate change threatens the wine industry

Domaine Carneros has a chateau inspired by Taitittinger’s 18th-century Chateau de la Marquetterie, plus formal gardens and a majestic fountain, in the Carneros AVA, a wine region located in both southern Napa and Sonoma. Its original solar panels are on the chateau rooftop and on a back building known as the Carriage House.

The microgrid is being built atop the carport and as ground-mounted structures by EDF Renewables, which develops and operates clean energy plants in over 20 countries, especially in Europe and North America. 

Back in 2003, the winery’s solar project was regarded as a “hippie eccentricity,” noted the Napa Valley Register, and supplied about 35-40% of its electricity needs.

Its new upgraded 250-kilowatt solar project combines battery storage, allowing the winery to draw from stored energy during costly evening peak-demand times, with smart controls, enabling it to take the whole facility off the electrical grid in case of power outages and limit its use of diesel fuel for backup generators, is expected to supply 75-85% of its electricity needs, said Remi Cohen, CEO of Domaine Carneros, who took over in 2020, the year the project was announced.

About napa green

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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