The Ministry of Energy and Green Transition has announced that the final phase of the Kumasi–Anwomaso Transmission Line Upgrade, known as the K1–K2 Project, will begin on 20 July 2026.
According to a ministry release reported by 3News, the work will be undertaken with the Ghana Grid Company (GRIDCo) and the Electricity Company of Ghana (ECG). It includes an upgrade of a transformer at the Kumasi, or Ahodwo, Substation.
The ministry said customers served by the Kumasi K1 and Anwomaso K2 substations could experience temporary and localised interruptions to electricity supply during scheduled construction periods. It said GRIDCo and ECG would issue advance notices before each planned outage and would seek to restore power before the evening peak-demand period.
Transmission line replacement
The K1–K2 project is replacing an existing 19-kilometre single-circuit line between the Anwomaso and Ahodwo substations. The ministry said the present line, rated at 364MVA, has faced increasing pressure as Kumasi and nearby communities have expanded.
It said the replacement will be a double-circuit line with a total rating of 978MVA, or two 488MVA circuits. The ministry said the new line is intended to raise transmission capacity, improve reliability and create room for future residential, commercial and industrial demand in Kumasi and the wider Ashanti Region.
As of 16 July, about 90% of foundation works and 67% of tower assembly works had been completed, according to the release. The remaining tasks include dismantling the old line, erecting new towers and installing new conductors. The existing line must be de-energised for those activities to be carried out safely, the ministry said.
Ahodwo transformer upgrade
GRIDCo is also expected to replace one of the existing 66MVA transformers at the Ahodwo Substation with a 145MVA unit. The ministry said the replacement should increase transmission capacity, reduce pressure on existing equipment and improve operational flexibility for electricity supply in Kumasi and surrounding communities.
The ministry urged residents to avoid marked construction zones and follow safety directions issued by project personnel. It said the final construction phase is expected to take three months, while acknowledging that the planned interruptions may inconvenience households and businesses.
The announcement said the works are part of efforts to build a more reliable and higher-capacity electricity network for Kumasi, the Ashanti Region and Ghana.
