# Nigeria-Sunrise Power Mambilla project arbitration > Live situation record from CLSTR: https://clstr.news/situations/nigeria-sunrise-power-mambilla-project-arbitration > Updated: 2026-09-19T18:22:45.000Z. Sources: 30. Developments: 2. An International Chamber of Commerce (ICC) tribunal in Paris has ruled in favor of Nigeria regarding the Mambilla Hydroelectric Power Project in Taraba State. The tribunal dismissed multi-billion dollar claims brought by Sunrise Power and Transmission Company Limited and its promoter, Leno Adesanya. The ruling rejected a USD 2.35 billion claim and a separate USD 400 million settlement claim, effectively preventing Nigeria’s potential exposure from exceeding USD 3.38 billion. The tribunal found that previous settlement agreements involving Sunrise were products of corruption and unenforceable under Nigerian public policy. Specifically, the tribunal criticized former Attorney-General Abubakar Malami and former Minister of Power Saleh Mamman, finding they lacked the authority to bind the federal government and noting that Malami had reached a “corrupt deal” with Adesanya. Additionally, the tribunal ordered Sunrise Power and Adesanya to reimburse the Nigerian government approximately USD 11.82 million for legal fees and expenses, representing roughly 75 percent of Nigeria’s legal costs. The tribunal also determined that Adesanya is personally bound by the arbitration agreement. President Bola Ahmed Tinubu characterized the decision as removing the “single biggest legal hurdle” that had stalled the project for years. While the ruling is a significant victory for Nigeria, Leno Adesanya stated that Sunrise Power is reviewing the award and considering lawful options for next steps. The Arewa Think Tank has described the decision as a victory for the protection of Nigeria’s national interests and public finances. ## Claims - The tribunal rejected Sunrise Power's demand for $400 million, consisting of a $200 million settlement sum and a $200 million default payment. (disputed by 8 sources) - The ICC tribunal in Paris dismissed a $2.35 billion claim filed by Sunrise Power regarding the Mambilla Hydropower Project. (disputed by 4 sources) - The ICC tribunal in Paris rejected claims brought by Sunrise Power and Transmission Company Ltd against Nigeria. (corroborated by 20 sources) - President Tinubu stated that the ruling clears the primary legal obstacle to the Mambilla Hydroelectric Power Project. (corroborated by 11 sources) - The tribunal ordered Sunrise Power and its promoter, Leno Adesanya, to reimburse Nigeria for 75 per cent of its legal fees and expenses. (corroborated by 8 sources) - Nigeria's legal costs were assessed at $11,819,506.51. (corroborated by 8 sources) - The tribunal ruled that Leno Adesanya, the promoter of Sunrise Power, is bound by the arbitration agreement. (corroborated by 6 sources) ## Timeline ### 2026-09-19: Nigeria wins ICC arbitration against Sunrise Power over Mambilla project An ICC tribunal in Paris dismissed a $2.35 billion claim by Sunrise Power against Nigeria over the Mambilla Hydropower Project, citing corruption and lack of authority in previous settlement attempts. 8 sources. https://clstr.news/cluster/nigeria-wins-icc-arbitration-against-sunrise-power-over-mambilla-project ### 2026-09-17: Nigeria wins ICC arbitration against Sunrise Power over Mambilla project An ICC tribunal in Paris rejected multi-billion dollar claims by Sunrise Power against Nigeria over the Mambilla Hydroelectric Project, ordering the company to reimburse Nigeria for legal fees. 25 sources. https://clstr.news/cluster/nigeria-wins-235bn-arbitration-over-mambilla-hydropower-project --- Cite as: Nigeria-Sunrise Power Mambilla project arbitration. CLSTR, https://clstr.news/situations/nigeria-sunrise-power-mambilla-project-arbitration