AfDB Funding Boost
The African Development Bank’s Sh10.6 billion commitment bridges a funding gap for the Thwake Multipurpose Dam, putting the 94% complete project on track for completion by mid-October 2026.
Construction on the Sh10.6 billion Thwake Multipurpose Dam has officially resumed, lifting a major infrastructure bottleneck in Kenya’s water and energy sector. The resumption follows a commitment from the African Development Bank (AfDB) to finance downstream water supply, irrigation, and hydropower components that had stalled as the project grappled with shortfalls on its remaining works.
As of mid-October 2026, the dam is standing at 94.2% completion, a significant milestone for a project originally scoped as a $625 million multi-phase development. The AfDB’s specific commitment covers the critical downstream deliverables: 150,000 cubic meters of daily water supply, irrigation for 40,000 acres, and a 20-megawatt hydropower generation capacity. With the funding agreement signed, construction crews are now focused on finishing the concrete face slab and an access bridge to the reservoir.
The project’s timeline has been recalibrated around these remaining structural elements. Completion of the physical dam is now targeted for mid-October 2026, with water impoundment expected by late January 2027. Full commissioning of the multi-purpose components will follow in April 2027. A report on the latest developments confirmed that downstream works are proceeding alongside the primary dam completion, ensuring all four phases—water supply, hydropower, irrigation, and flood mitigation—can be integrated without further delay.
The Thwake Dam has long been a focal point for regional development, serving as a landmark in Kenyan infrastructure designed to address chronic water scarcity and energy deficits in the surrounding counties. The AfDB’s intervention provides the necessary capital bridge to realize those promises, shifting the site from a state of partial construction to full operational deployment.
What remains to be seen is how rapidly the infrastructure can transition from concrete to community impact. The engineering challenges are largely behind the site now; the focus will shift quickly to managing the reservoir’s inflow and optimizing the 20-megawatt power grid integration come next spring.