Creating long-term value

Base Energy is the operator of the Expanded Shallow Water Tano (ESWT) Block offshore in Ghana. ESWT has 3 existing oil and gas discoveries – North Tano, West Tano and South Tano fields with a contract area of 1500 sq.km.

With 3 partners – Base Energy (67.5% Operator), GNPC Explorco (22.5%) and GNPC (10%), we aim to be active at every stage of the value chain and run reliable operations, protect our communities, our people, the environment and deliver value.

Key operation highlights


Sq.km of contract area


Equity interest on ESWT block


mmbbl STOOIP

160 bcf

Non-Associated Gas

Our agile approach

ESWT holds a significant resource upside through further exploration, and the existing discoveries will reduce commercialisation uncertainty. We will take the low-cost approach with appropriate technologies and agility.

More about ESWT block

The Expanded Shallow Water Tano Block consists of three discovered fields, and comprises 1,500 sq.kms in water depths ranging from 55 meters to 116 meters.

The block is located 15 km to 35 km (9 miles to 21 miles) offshore Ghana, and is bounded on the north by the Ghana Coastline, on the west by the Maritime Border with Cote D’Ivoire, on the south by the Deepwater Tano Block which hosts the Tweneboa, Enyenra, and Ntomme (TEN) Fields, and on the east by the West Cape Three Points Block which hosts the Jubilee Field and Teak-Akasa discoveries.

Sustainable at heart

Sustainability is core to our cultural and long-term business values. As an aspiring major energy supplier, we know that the actions we take today have a significant impact on our future.

To meet the expectations of our people and communities, we’ve aligned our values to the UNSDGs, which guide our approach to sustainability across our business activities.

Partner with us

Find more about ESWT Block offshore and how you can participate in the process