SAN ANTONIO, May 11, 2010 (BUSINESS WIRE) --NuStar Energy L.P. (NYSE: NS) and NuStar GP Holdings, LLC (NYSE: NSH) announced today that Curt Anastasio, CEO and President of NuStar Energy L.P. and NuStar GP Holdings, LLC, will present at the 2010 Master Limited Partnership Investor Conference in Greenwich, Connecticut on Wednesday, May 12 at 2:45 p.m. Eastern Time.

NuStar's participation in the conference will be webcast live at www.nustarenergy.com and www.nustargp.com in the Investors section of the Web sites. The associated slide presentation will be available on both companies' Web sites after 1 p.m. Eastern Time on Tuesday, May 11, 2010.

NuStar Energy L.P. is a publicly traded, limited partnership based in San Antonio, with 8,417 miles of crude oil and refined product pipelines; 86 terminal and storage facilities that store and distribute crude oil, refined products and specialty liquids; and two asphalt refineries with a combined throughput capacity of 104,000 barrels per day. The partnership's combined system has over 91 million barrels of storage capacity. One of the largest asphalt refiners and marketers in the U.S. and the second largest independent liquids terminal operator in the nation, NuStar has operations in the United States, the Netherlands Antilles, Canada, Mexico, the Netherlands and the United Kingdom. For more information, visit NuStar Energy L.P.'s Web site at www.nustarenergy.com.

NuStar GP Holdings, LLC is a publicly traded, limited liability company that owns the two percent general partner interest, a 16.6 percent limited partner interest and the incentive distribution rights in NuStar Energy L.P., one of the largest asphalt refiners and marketers in the U.S. and the second largest independent liquids terminal operator in the nation with operations in the United States, the Netherlands Antilles, Canada, Mexico, the Netherlands and the United Kingdom. For more information, visit NuStar GP Holdings, LLC's Web site at www.nustargp.com.

SOURCE: NuStar Energy L.P.

NuStar Energy, L.P., San Antonio
Investors, Chris Russell, Vice President
Investor Relations: 210-918-3507
or
Media, Mary Rose Brown, Senior Vice President,
Corporate Communications: 210-918-2314
Web site: http://www.nustarenergy.com