Seven years after fire tore through four processing units at Cameroon's only refinery, the government has quietly transformed what was supposed to be a $400 million repair job into a $1.2 billion industrial overhaul. On June 29, Cameroon's finance ministry launched an international market consultation in Yaoundé, bringing together engineering firms, oil companies, banks, and investment advisors to sound out financing and technical options for a revised SONARA reconstruction plan now estimated at CFA 700 billion (~ USD1.23 billion) — nearly triple the CFA 250 billion (~USD 441million) figure the government's own board approved less than a year earlier, in August 2025.
The scope creep has a clear engineering logic behind it, even if the fiscal logic is harder to square. Rather than simply rebuilding the units the 2019 fire destroyed, the government has merged that repair project with a second-phase modernisation programme — known as Sonara 2010 — that had been underway before the fire but was shelved when the disaster hit. The revised plan now includes constructing a hydrocracker unit that would let SONARA process Cameroonian-produced crude directly, alongside storage upgrades and a target to roughly double refining capacity from 2.1 million to 3.5 million tonnes a year, according to Business in Cameroon's reporting on the plan.
Why a repair job became a rebuild
French engineering firm EKIUM's feasibility assessment, commissioned to inform the original Parras 24 recovery framework, found that restoring SONARA's pre-fire capacity was technically achievable through a phased restart — bringing existing units back online first, then layering in capacity expansion later. That gradualist logic shaped the plan the board approved on August 13, 2025: an initial 24-month roadmap targeting a 2027 restart at something close to the refinery's original 2.1 million tonne capacity, at a cost of roughly $400 million.
What changed between August 2025 and this June was less the technical assessment than the political appetite. Rather than executing a narrow repair and revisiting modernisation later, as originally planned, Prime Minister Joseph Dion Ngute's government opted to combine both phases into a single, larger financing exercise — the kind of consolidation that can make sense on paper (one financing round, one construction mobilisation, one disruption period rather than two) but that also concentrates execution risk and capital requirements into a single, much larger bet.
The refinery Cameroon cannot really do without
The urgency behind moving quickly, even at higher cost, is not abstract. SONARA has been offline since the May 2019 fire, forcing Cameroon — a net crude oil producer — into near-total dependence on imported refined fuel for a domestic market it could theoretically supply itself. BEAC Governor Yvon Sana Bangui warned in 2024 that continued reliance on fuel imports was weakening the broader CEMAC region's external financial position, not just Cameroon's own. That regional dimension matters: SONARA's 2.1-million-tonne pre-fire capacity made it "a cornerstone of Central Africa's energy supply chain," as multiple industry assessments have described it, serving a swath of the CEMAC bloc beyond Cameroon's own borders.
The financing question nobody has fully answered
Here is where this story connects directly to something we have covered in detail this year: Cameroon's own fiscal position is under real strain. Fitch's July 9 rating action — a "B" rating with a negative outlook — flagged roughly CFA 560 billion (~USD 986.6 million) in government payment arrears, alongside a public financial management framework the agency itself described as a "key vulnerability." SONARA is not a bystander to that fiscal picture; it is one of its more direct contributors. By 2021, the refinery had already accumulated CFA 376 billion (~USD 662.4 million) in debt, and Cameroon's finance minister confirmed earlier this year that the state had taken over CFA 145.4 (~USD 255.4 million) billion of SONARA's tax debt directly — making the refinery, in the minister's own framing, the country's most indebted state-owned enterprise even before this expanded reconstruction plan added another CFA 700 billion (~USD 1.3 billion)in capital requirements to the picture.
A government already managing CFA 560 billion (~USD 986.6 million) in arrears to domestic suppliers is now sponsoring a market consultation for a refinery project nearly three times larger than what it approved less than a year ago. That is not necessarily unfinanceable — the June market sounding exercise exists specifically to test appetite among international engineering firms, oil companies, and investment banks for structuring exactly this kind of capital stack, likely through a combination of concessional financing, commercial debt, and potentially equity or offtake-linked arrangements rather than pure sovereign borrowing. But it does mean SONARA's reconstruction now sits squarely inside the same cash-flow question we flagged in our coverage of Cameroon's credit rating: a government whose debt-to-GDP ratio looks manageable on paper can still struggle to pay its bills on time, and a $1.2 billion industrial project layered on top of that reality raises the stakes on getting the financing structure right the first time.
What comes next
The market consultation that opened in Yaoundé on June 29 is the mechanism through which Cameroon will find out whether international capital views the revised, larger SONARA plan as bankable on its own commercial merits, or whether the government will need to shoulder a larger share of the financing itself — precisely the outcome its current arrears and liquidity position make hardest to absorb. For a country in the middle of pivoting its own economic identity from oil toward mining, as we have documented extensively this year, getting its sole refinery back online remains a parallel, load-bearing priority: fuel security and foreign exchange savings that no amount of new iron ore or bauxite revenue directly substitutes for. Whether Cameroon can finance both transitions simultaneously, at the scale now on the table, is the question this June's market sounding was designed to start answering.
