According to a study Morgan Stanley released this week more than 2.8 billion cases of wine is produced each year, but consumption is about 3 billion cases.
Solar panels will provide 60% of the energy at the Owen Valley Winery.
Some wine makers in Indiana are on track for their best seasons to date.
Preparations began early Friday morning for the 31st annual event in Showers Common.
The federal government has given South Central Indiana a prestigious American Viticultural Area designation.
The heat and the drought has helped vineyards even as it has depleted many other crop yields.
Oliver Winery brought in a helicopter to its Creekbend Vineyard to keep its grapes from freezing in Wednesday morning's frost.
The warm weather has caused grapevines to bud early. If another frost comes, it could kill those buds and the grapes they would have produced.