The final phase of the Kumasi–Anwomaso Transmission Line Upgrade (K1–K2 Project) and the transformer upgrade at the Kumasi (Ahodwo) Substation will begin on July 20, 2026, according to an announcement made by the Ministry of Energy and Green Transition, the Ghana Grid Company Ltd. (GRIDCo), and the Electricity Company of Ghana (ECG).
According to the Ministry, these projects form part of government’s commitment to strengthening electricity infrastructure to meet the growing energy needs of Kumasi and the Ashanti Region.
The final phase of construction is expected to be completed within three months.
For many years, Kumasi has relied on an ageing 19-kilometre single-circuit transmission line connecting the Anwomaso (K2) and Kumasi (Ahodwo) (K1) substations, despite the significant population growth and rapid commercial expansion.
Although the line has served the city reliably over the years, government says it has become increasingly overloaded and is no longer sufficient to meet the growing electricity demand of Kumasi and its surrounding communities.
The K1–K2 Project addresses this constraint by replacing the existing 364MVA single circuit transmission line with a modern double-circuit transmission line rated at 2 × 488MVA (978MVA).
“This will more than double the transmission capacity between the two substations, significantly enhancing the reliability, resilience and efficiency of electricity supply to Kumasi and the wider Ashanti Region, while creating additional capacity to support future residential, commercial and industrial growth,” the Ministry stated.
The project has reached its final stage. The Ministry disclosed that as of July, 16, 2026, approximately 90% of foundation works and 67% of tower assembly works have been completed.
The remaining works involve dismantling the existing transmission line, erecting new transmission towers and stringing new conductors.
Planned Outages
To ensure the safe execution of these highly technical activities, the existing transmission line must be de-energised.
Government has since announced a planned outages in areas being served by the Kumasi (K1) and Anwomaso (K2) substations.
Customers using the said transmission lines may experience temporary and localised interruptions to electricity supply during scheduled construction periods.
The Ministry said GRIDCo and ECG will issue advance public notices ahead of each planned outage, and every effort will be made to restore electricity supply before the evening peak demand period.
Transformer Upgrade at Kumasi Substation
Similarly, GRIDCo will replace one of the existing 66MVA transformers at the Kumasi (Ahodwo) Substation with a new 145MVA transformer.
This upgrade will significantly increase transmission capacity, improve operational flexibility, reduce loading on existing equipment and further enhance the reliability of electricity supply across Kumasi and surrounding communities.
Government urged all residents to stay away from designated construction areas and comply fully with all safety instructions issued by project personnel throughout the construction period.
“We appreciate the patience, cooperation and understanding of residents and businesses during this period. 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,” the Ministry’s statement concluded.
