Tallgrass Energy Partners upsized an offering of 7.375% senior unsecured notes, due 2029, to $800 million from the previously announced $700 million, the company said in a Jan. 16 news release.

The notes offering is expected to close Jan. 23, subject to satisfaction of customary closing conditions. Tallgrass intends to use the net proceeds to fund the purchase of its outstanding 7.50% senior notes due 2025.

The securities to be offered have not been registered under the Securities Act of 1933 or any state securities laws. Unless so registered, the securities may not be offered or sold in the U.S. except pursuant to an exemption from, or in a transaction not subject to the registration requirements of the Securities Act and applicable state securities laws.

Tallgrass plans to offer and sell the securities only to qualified institutional buyers pursuant to Rule 144A under the Securities Act and to non-U.S. persons in transactions outside the U.S.