It began commercial operations on 30 July 2008 with an installed capacity of 110 megawatts (150,000 hp).

Globeleq, Songas's majority shareholder, which operates plants that generate up to 25% of Tanzania's energy, is the Ubungo plant's current operator, and spent US$260 million setting up the Songo Songo gas-power project.

[3] The pipeline was completed in May 2004, and the first gas reached Dar es Salaam that July.

[4] In July 2011, Siemens Energy secured an order from Jacobsen Elektro for three gas turbines to extend the Tanesco Ubungo power plant, also to be fueled from the Songo Songo gas field.

Construction took 14 months and the new turbines went online in July 2012, doubling the plant's output.