Exploratory drilling in the Voltaian Basin is expected to begin in fourth quarter-2026, reviving a long-delayed project that government hopes will unlock new hydrocarbon reserves and help stem Ghana’s declining crude oil production.
Presenting the 2026 Mid-Year Fiscal Policy Review in parliament, Finance Minister Dr. Cassiel Ato Forson said GNPC-Explorco remains on course to commence exploratory drilling in the Voltaian Basin during fourth quarter-2026, marking the latest target date for a project that has missed previous timelines.
If realised, the drilling will represent a major milestone in the nation’s decades-long search for commercially viable onshore petroleum resources and form part of a broader strategy to revive upstream investment after years of falling oil output.
The planned drilling comes as government pursues a broader strategy to revive upstream investment after securing more than US$3.5billion of fresh commitments from partners in the Jubilee and Offshore Cape Three Points (OCTP) fields. The investments are intended to help reverse years of falling output, which has raised concerns over the long-term sustainability of petroleum revenues.
Crude oil production has nearly halved from 71.4 million barrels in 2019 to about 36 million barrels for 2025, underscoring the urgency of finding new reserves while revitalising existing producing fields.
The Voltaian Basin, which stretches across nearly 40 percent of the country’s landmass, has long been identified by the Ghana National Petroleum Corporation (GNPC) as one of the country’s most promising but least explored hydrocarbon provinces.
GNPC estimates the basin could contain more than 11 billion barrels of oil equivalent in prospective resources, although the figure remains subject to confirmation through exploration.
Speaking at the West African Gas Summit in Accra last month, Deputy Chief Executive Officer (DCEO) of GNPC Hamis Ussif described the basin as a strategic opportunity for Ghana’s energy future.
“By very conservative estimates, this can unlock over 11 billion barrels of oil equivalent. The potential is very huge and GNPC is looking for partners to at the right time unlock resources that exist in this basin,” he said.
Mr. Ussif noted the basin spans several regions with limited large-scale mineral resources, arguing that successful exploration could stimulate economic activity, create jobs and broaden opportunities beyond the country’s traditional mining enclaves.
The latest timeline however follows a series of earlier projections that failed to materialise.
At the 2024 Local Content Conference and Exhibition at Takoradi, GNPC indicated exploratory drilling would commence in 2025. During the event, the Corporation’s Manager for Exploration and Appraisal, Michael Aryeetey, described the basin as a potential “game changer” capable of unlocking substantial hydrocarbon resources.
The revised schedule has reinforced concerns among some industry observers over the pace of progress.
The Policy Lead for Oil and Conventional Energy-Africa Centre for Energy Policy (ACEP), Kodzo Yoatse, said repeated revisions of the drilling timetable have weakened confidence in the project.
“GNPC has not given us anything to instil confidence about the Voltaian Basin’s prospects. Even the timeline for drilling keeps shifting. The Corporation has spent over US$120million on that basin over the years with nothing concrete to show,” he said.
Mr. Yoatse argued that government should move more decisively to revive upstream activity by reclaiming inactive petroleum blocks and reallocating them to technically and financially capable exploration and production companies.
He also warned that delays in completing a planned review of the country’s extractive-sector fiscal regime continue to undermine investor confidence.
Ahead of the of the Mid-Year Fiscal Policy Review presentation, Mr. Yoatse urged government to accelerate the reform process.
“Government should fast-track the fiscal regime review and publish clear timelines for completion. Continued delays weaken Ghana’s competitiveness in attracting exploration and upstream investment,” he said.
Resource experts maintain that while exploratory drilling would represent an important milestone for the country’s onshore petroleum ambitions, commercial discoveries – if made – could still take several years to appraise and develop before contributing to national oil production.
GNPC has consistently upheld that the Voltaian Basin remains a long-term strategic asset capable of diversifying Ghana’s hydrocarbon resource base and strengthening the country’s ambition of becoming an energy hub for West Africa.
The Corporation has previously said it is positioning itself to attract strategic partners in support of exploration and the basin’s eventual development.
Government’s latest commitment sets another deadline for a project that has long been viewed as central to diversifying Ghana’s hydrocarbon resource base. The fourth quarter of 2026 will determine whether the Voltaian Basin finally moves from exploration to exploitation.