Major Power Works to Begin in Kumasi on July 20 as Energy Ministry Upgrades Transmission Line and Substation
The Ministry of Energy and Green Transition, Ghana Grid Company (GRIDCo) and the Electricity Company of Ghana (ECG) are set to begin the final phase of the Kumasi-Anwomaso Transmission Line Upgrade and a transformer upgrade at the Kumasi (Ahodwo) Substation.
In a statement issued on July 16, the Ministry said the works will take place on July 20, 2026 and form part of government’s commitment to strengthen electricity infrastructure to meet growing demand in Kumasi and the wider Ashanti Region.
The most critical component, the K1-K2 Project, involves replacing the existing 19-kilometre single-circuit transmission line between Anwomaso (K2) and Kumasi (Ahodwo) (K1) substations.
The ageing 364MVA line will be replaced with a modern double-circuit line rated at 2 x 488MVA, or 978MVA, more than doubling transmission capacity.
According to the Ministry, the upgrade will significantly enhance the reliability, resilience and efficiency of electricity supply while creating additional capacity for future residential, commercial and industrial growth.
Kumasi has relied on the single-circuit line for many years despite rapid population growth and commercial expansion, and the line has become increasingly overloaded.
As of today, about 90% of foundation works and 67% of tower assembly works have been completed.
The remaining works include dismantling the existing transmission line, erecting new towers and stringing new conductors. The final phase is expected to be completed within three months.
To ensure safety, the existing transmission line will be de-energised during construction. GRIDCo and ECG said customers served by the Kumasi (K1) and Anwomaso (K2) substations may experience scheduled interruptions.
Advance public notices will be issued before each outage, and authorities say every effort will be made to restore supply before the evening peak period.
At the same time, GRIDCo will replace one of the existing 66MVA transformers at the Kumasi (Ahodwo) Substation with a new 145MVA transformer.
The Ministry noted this will increase transmission capacity, improve operational flexibility, reduce loading on existing equipment, and further enhance supply reliability across Kumasi and surrounding communities.
The Ministry urged residents to stay away from designated construction areas and comply with all safety instructions from project personnel.
“We appreciate the patience, cooperation and understanding of residents and businesses during this period,” the statement said. “While these temporary interruptions may cause some inconvenience, they are essential to delivering a stronger, more reliable and higher-capacity electricity network that will support the long-term development of Kumasi, the Ashanti Region and Ghana.”
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