Wine Facts, Statistics and Trivia
Age of vine before producing useful grapes—3 years
Age of vine before full production—5 years
Productive lifetime of a vine—30-35 years—Although the quality can remain good, the yield begins to decrease after that
Grape clusters in bottle—4-5
Grapes in a bottle—500-600
Clusters on a vine—40
Grapes in a cluster—75-100
Grape clusters in one glass of wine—1
Vines per acre—500-1300
Pounds of grapes produced by one vine—8-12
Tons per acre—4 (average—can vary greatly)
Gallons of wine per ton of grapes—120
Gallons of wine per acre—less than 500
Barrels per acre—13.5
Bottles per vine—4-6
Bottles per ton—500—700
Bottles per acre—4,000
Cases per barrel—24.6
Glasses per acre—16,000
Glasses in a bottle—5-6
Bottles per 60 gallon barrel—300
Calories in a 5 ounce glass of dry wine—100-125
Fat in a 5 ounce glass of dry wine—0
Carbohydrates in a 5 ounce glass of dry wine—1-2
Cost of acre of new vineyard in Napa Valley—$120,000 (some existing property has been sold for $300,000 an acre)
Cost of French oak barrel—$600-850
Cost of American oak barrel—$300-550
Average age of a French oak tree used to make barrels—170 years
Number of years an oak barrel is used—5-8
Number of vineyard acres in Napa County (2008)—45,158 (out of a total of 485,120 acres in the entire county)—only 9% of total land area
Number of vineyard acres placed in Land Trust never to be developed—More than 20,000 in conservation easements, and 38,000 in agricultural preservation
Most popular varietals in Napa Valley (in order of popularity)
1. Cabernet Sauvignon
2. Chardonnay
3. Merlot
4. Sauvignon Blanc
5. Pinot Noir
6. Zinfandel
Proportion of total value at harvest of red varietals compared to white—Nearly 3:1
Number of wineries in Napa Valley—Approximately 400
Number of wineries in Napa Valley built since 1966—300 production facilities. The rest are cooperatively produced
Number of people/companies owning Napa Valley vineyards—626
Number of people directly employed in Napa Valley wine industry (wineries, vineyards, vineyard/winery services)—More than 8,000
Number of people directly employed in Napa Valley wine industry and resulting hospitality industry—More than 40,000
Year grapes first planted in Napa Valley—1838 (by George Yount)
First winery built in Napa Valley after Prohibition—Stony Hill (1951)
First large winery built in Napa Valley after Prohibition—Robert Mondavi (1966) (Louis Martini Winery was built in 1933)