Frog's Leap Winery

John Williams and Larry Turley formed Frog's Leap in 1981 at the site of the historic Adamson Winery, producing 700 cases of sauvignon blanc. When they started, Turley was a doctor and Williams was a winemaker at Spring Mountain Vineyard. They took the winery into organic farming, and made it the first Napa winery to produce wine with certified organically grown grapes. They built up the winery in Saint Helena, California together until 1994, when John Williams took Frog's Leap to the Red Barn Ranch in Rutherford, California and Larry Turley established what is now Turley Wine Cellars. In 2004, Sunlight Electric met with Frog's Leap discussing how the winery was spending around $50,000 annually on electricity. On February 9, 2005, the photovolatic system went live over Frog's Leap's leeching fields. With the system's annual output of 260,000 kilowatt-hours (9.4×1011 J), it produces about 85% of the site's energy usage.