Tanzania and Maurel & Prom Announce First Gas Discovery in Over a Decade at Mnazi Bay

What happened Tanzanian Energy Minister Juma Homera initiated an official working tour of the Mtwara Region on October 27, 2026, to announce a major natural gas discovery, AllAfrica reported. The minister was accompanied by Subira Mgalu, Chairperson of the Parliamentary Standing Committee on Energy and Minerals, the Permanent Secretary responsible for Oil and Gas Affairs Dr James Mataragio, the Managing Director and board members of the Tanzania Petroleum Development Corporation (TPDC), and was received by Mtwara Regional Commissioner Colonel Donald Msengi. According to Club of Mozambique, the reserves were confirmed at the Kasa-1X ST2 well, explored jointly by state-owned TPDC and French operator Maurel & Prom. The find marks Tanzania's first natural gas discovery in more than ten years, adding to the country's existing discovered gas reserves of approximately 57.5 trillion standard cubic feet previously recorded by the energy regulator. Minister Homera also noted that TPDC and Maurel & Prom drilled three wells—MB-5, MS-2, and Kasa-1X ST2—to boost national gas supply, while TPDC is already in discussions with four investors planning small-scale liquefied natural gas (LNG) developments. Africa Oil & Gas Report detailed that drilling on the Kasa-1X exploration well began in June 2026. Drilled from onshore, the well reached a target located 4.5 kilometres offshore beneath 400 metres of water, followed by a sidetrack intersecting 588 metres of reservoir. Maurel & Prom estimated gross natural gas volumes in the Mnazi Bay asset at approximately 200 billion cubic feet, representing 120 billion cubic feet of working interest for the company. The operator reported that its gross production had reached an average of 130 million standard cubic feet per day (MMscf/d) as of October 2026, supported by wells MB-5 and MS-2 drilled in the first half of the year. Maurel & Prom indicated that first production from the new discovery is envisaged as early as November 2026, offering an expected gross production potential of 50 MMscf/d, while existing gas processing facilities have been tested to handle 150 MMscf/d. Why it matters Nexus analysis indicates that this upstream breakthrough may reinforce Tanzania's domestic gas deliverability after a decade-long lull in exploration additions. The rapid tie-back scheduled for November 2026 illustrates that near-field infrastructure within Mnazi Bay could permit accelerated commercialisation compared to greenfield deepwater assets. Furthermore, the prospect of raising combined field production potential toward 200 MMscf/d could enhance feedstock availability for local power generation and regional industrial consumers in Mtwara and Lindi. The engagement of TPDC with small-scale LNG project developers may also reflect an operational push to monetize incremental onshore-linked reserves through decentralized distribution rather than solely relying on complex mega-projects. What to watch Nexus analysis suggests industry observers should track the operational commissioning of the Kasa-1X ST2 well in November 2026 to verify whether initial output matches the anticipated 50 MMscf/d capacity. Market participants should also monitor discussions between TPDC and the four prospective small-scale LNG developers for formal commercial agreements. Finally, attention will focus on how regional processing capacity is optimized as field output approaches the 150 MMscf/d test threshold. Sources AllAfrica · Tanzania Africa Oil & Gas Report Club of Mozambique