Residents and businesses in Kumasi and parts of the Ashanti Region are expected to experience temporary and localised power outages from July 20, 2026, as the Ministry of Energy and Green Transition, the Ghana Grid Company Limited (GRIDCo) and the Electricity Company of Ghana (ECG) begin the final phase of the Kumasi–Anwomaso Transmission Line Upgrade and transformer replacement at the Kumasi (Ahodwo) Substation.

According to a joint statement issued on July 16, 2026, the projects are part of government’s efforts to strengthen electricity infrastructure and improve power reliability in Kumasi and the wider Ashanti Region.

The statement explained that Kumasi has for years relied on an ageing 19-kilometre single-circuit transmission line linking the Anwomaso (K2) and Kumasi (Ahodwo) (K1) substations despite rapid population growth and commercial expansion.

"Although the line has served the city reliably over the years, it has become increasingly overloaded and is no longer sufficient to meet the growing electricity demand of Kumasi and its surrounding communities," the statement said.

Under the project, the existing 364MVA single-circuit transmission line will be replaced with a modern double-circuit line rated at 2 × 488MVA (978MVA), more than doubling the transmission capacity between the two substations.

The Ministry said the upgrade will "significantly enhance 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."

It disclosed that the project has entered its final and most critical stage, with about 90% of foundation works and 67% of tower assembly completed as of July 16.

The remaining works include dismantling the existing transmission line, erecting new transmission towers and stringing new conductors.

To allow the works to proceed safely, the existing transmission line will be de-energised, resulting in scheduled power interruptions for customers served by the Kumasi (K1) and Anwomaso (K2) substations.

"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," the statement noted.

In addition to the transmission line project, GRIDCo will replace one of the existing 66MVA transformers at the Kumasi (Ahodwo) Substation with a new 145MVA transformer.

According to the statement, the transformer 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."

The Ministry also urged residents to observe all safety precautions throughout the construction period.

"Safety remains our highest priority. We urge all residents to stay away from designated construction areas and comply fully with all safety instructions issued by project personnel throughout the construction period," it said.

The final phase of the project is expected to be completed within three months.

The Ministry acknowledged that the temporary power interruptions may inconvenience residents and businesses but said the upgrades are necessary to deliver "a stronger, more reliable and higher-capacity electricity network that will support the long-term development of Kumasi, the Ashanti Region and Ghana."