WAPCo was incorporated in 2003 to develop, own, and operate the WAGP under a public–private partnership model following the signing of the WAGP Treaty by the four countries in 2003. Headquartered in Accra, Ghana, the company maintains operational offices across its four operating countries. Its shareholders bring together leading international and state-owned energy players, including Chevron (36.9%), NNPCL (24.9%), Shell (17.9%), TAPCo (100% owned by Ghana’s Volta River Authority) (16.3%), Société Togolaise de Gaz (2%), and Société BenGaz S.A (2%). WAPCo operates under the regulatory oversight of the West African Gas Pipeline Authority (WAGPA), which harmonizes cross-border rules and ensures transparent and safe operations.
Following a Final Investment Decision (FID) in 2004, construction of the pipeline began in 2005 with an initial investment of $1 billion, financed through public–private partnerships. The project was governed by the International Project Agreement (IPA) ratified by all four states, while the WAGP Treaty provided the overarching legal framework. To ensure transparency and regulatory oversight, the treaty also established the West African Gas Pipeline Authority (WAGPA), headquartered in Abuja, Nigeria. Construction was completed in 2008, with free-flow operations starting that year and full commercial operations commencing in March 2011. Since then, WAPCo has built strong technical expertise in both onshore and offshore pipeline management, gas quality assurance, and regional market operations.