Sierra Leone has signed a $225 million petroleum licence agreement with Nigeria-based Marginal Energy Limited, granting the company rights to explore and produce oil in offshore blocks as the country moves to revive its underdeveloped upstream sector. The deal, announced on April 23, 2026, is part of a broader strategy to attract fresh investment into its largely untapped hydrocarbon resources, as reported by Reuters.
The agreement allows Marginal Energy to carry out exploration and potential production activities, marking one of the most significant recent investments in Sierra Leone’s energy industry. Officials say the move is aimed at unlocking offshore reserves and positioning the country as a viable frontier market for oil and gas development.
The deal follows a series of related agreements signed during the Invest in African Energy Conference in Paris, including partnerships with major international players, reflecting growing investor confidence. Sierra Leone has been actively promoting its offshore basin, which is believed to hold substantial untapped resources, supported by improved seismic data and regulatory reforms.
The Marginal Energy agreement signals renewed momentum in Sierra Leone’s oil ambitions, as the government seeks to diversify its economy and accelerate exploration activity. With multiple deals signed in quick succession, the country is positioning itself as one of West Africa’s emerging energy frontiers in an increasingly competitive global market.

