KETRACO Energizes the Isinya‑Konza 400 kV Transmission Line and Konza Substation
Kenya Electricity Transmission Company (KETRACO) announced the successful energizing of a new 400 kV double‑circuit line linking Isinya to Konza, together with the commissioning of the associated 400/132/66 kV Konza substation. The milestone, disclosed in a KETRACO press release, strengthens the national transmission network and secures a reliable power supply for Konza Technopolis – Kenya’s flagship smart‑city development.
Project Scope and Technical Specifications
The infrastructure delivered under this contract includes:
- A 48 km long 400 kV double‑circuit transmission line.
- Two 350 MVA power transformers rated at 400/132 kV.
- Two 75 MVA power transformers rated at 132/66 kV.
These components raise the transmission capacity of the lower eastern corridor, improve network stability, and provide additional operational flexibility for the national grid.
Impact on Konza Technopolis and the Wider Region
According to Eng. Kipkemoi Kibias, Managing Director of KETRACO, the new line and substation “strengthen the reliability of the national power grid and guarantee high‑quality power supply to Konza Technopolis and surrounding areas.” The project directly supports:
- Evacuation and distribution of electricity to Kajiado, Machakos and Makueni counties.
- Powering residential, commercial and industrial loads that are expected to grow as Konza Technopolis expands.
- Improved power quality and reduced network constraints for existing consumers in the region.
By linking to existing 400 kV nodes at Suswa and Isinya, the line enables the transfer of electricity from major renewable generation sites – including the Kipeto Wind Farm, Olkaria Geothermal Complex, Lake Turkana Wind Power Project and Ethiopian hydropower imports – to the smart city, thereby facilitating access to green energy for its data centres, research parks and urban infrastructure.
Financing, Implementation and Partnerships
The project was financed jointly by the Export‑Import Bank of China (Exim Bank of China) and the Government of Kenya, with a total investment of KES 8.4 billion. Engineering, procurement and construction were carried out by China Aerospace Construction Group Company Limited (CACGC), a firm with extensive experience in high‑voltage transmission works across Africa and Asia.
KETRACO’s role as the state‑owned transmission authority provided oversight, ensuring compliance with Kenyan grid codes and international safety standards. The utility’s decades‑long experience in planning and operating extra‑high‑voltage lines contributed to the project’s timely delivery and technical robustness.
Supporting Kenya’s Vision 2030 and Sustainable Energy Goals
Eng. Kibias noted that the Isinya‑Konza transmission assets are “critical to supporting industrialization, attracting investment and advancing Kenya’s Vision 2030 development agenda.” By enhancing grid reliability and enabling the integration of renewable power, the project aligns with national objectives to:
- Increase access to reliable electricity for all citizens.
- Promote industrial growth through stable power supply.
- Reduce reliance on fossil‑fuel generation by facilitating renewable energy evacuation.
- Strengthen regional interconnectivity within the Eastern Africa power pool.
Conclusion
The energizing of the 400 kV Isinya‑Konza line and Konza substation marks a tangible step forward in Kenya’s effort to build a resilient, modern transmission network. Backed by credible financing, expert execution and clear strategic alignment with national development plans, the project delivers measurable benefits for Konza Technopolis, the lower eastern region and the country’s broader transition toward a sustainable energy future.
