A San Francisco venture capitalist is investing $2.5 million in H.D.D. LLC, a fast-growing Healdsburg wine company launched by partners Paul and Heath Dolan, Phil Hurst and Bill Hambrecht.

The investment by Daniel A. Carroll, managing partner at TPG Newbridge Capital, will give the company additional resources as it prepares to introduce new packaging and begin selling wine online.

The company sells wine directly to consumers, restaurants and retailers. It expects to sell nearly 250,000 cases this year and generate $20 million in revenues, up from $500,000 in 2008, its first year of operations.

Its business model allows the company to respond quickly to consumer, retailer and restaurateur needs with new products and packaging, while anticipating and even establishing new trends, said Hurst, the company's chairman.

"Our model is high-touch, innovative and ultimately quickness to market," Hurst said in a statement. "We've seen explosive growth by exercising more flexibility and ingenuity now embraced and expected by the wine trade."

The company's brands include wines from Napa and Sonoma counties: VML Winery, Truett Hurst Winery, Bradford Mountain, Healdsburg Ranches and Stonegate.