Nigeria, Feb. 27 -- Seplat Energy had little to show for an enormous surge in turnover in 2025, in terms of its impact on profit, as Nigeria's biggest oil & gas company by market value faced a storm of cost pressures, including a huge tax liability that kept earnings growth muted.

Revenue reached a level never before seen by the corporation, rising 150.4 per cent to N4 trillion compared to the previous year, according to its audited accounts issued on Thursday.

The stimulus came as the oil driller dramatically expanded average daily output by 148 per cent to 131,506 barrels of oil equivalent, and as Seplat marked its inaugural year of full offshore consolidation.

Onshore production grew by 14 per cent following the delivery of the Sape...