Tortoise Capital Advisors, L.L.C., the adviser of TYG, TYY, TYN, TPZ, NTG and TTP, announced today the release of first quarter 2012 reports for each of these funds. The reports are available online at www.tortoiseadvisors.com. A hard copy of these reports are available free of charge upon request by calling (866) 362-9331 or emailing info@tortoiseadvisors.com.

About Tortoise Capital Advisors, L.L.C.

Tortoise Capital Advisors, L.L.C. is an investment manager specializing in listed energy infrastructure investments. As of March 31, 2012, the adviser had approximately $7.9 billion of assets under management in NYSE-listed closed-end investment companies, an open-end fund and other accounts. For more information, visit www.tortoiseadvisors.com.

Safe Harbor Statement

This press release shall not constitute an offer to sell or a solicitation to buy, nor shall there be any sale of these securities in any state or jurisdiction in which such offer or solicitation or sale would be unlawful prior to registration or qualification under the laws of such state or jurisdiction.