Kiambu County is embracing renewable energy to tackle rising water supply costs through the solarisation of boreholes, a move that has already demonstrated significant savings and improved water reliability. The Kikuyu Water and Sanitation Company spearheaded the initiative, with the Riu 2 borehole serving as the pilot site, commissioned in July 2020. The project aimed to reduce reliance on expensive grid electricity while ensuring uninterrupted access to clean water for local communities.
According to Jane Murage, Managing Director of the Kikuyu Water and Sanitation Company, a cost-benefit analysis of the Riu 2 borehole revealed savings of KSh 737,244 over eight months, representing a 24 percent reduction in electricity costs. The analysis showed that the highest savings occurred during the sunnier months of December, January, and February, while cloudier months such as July, August, and September saw lower energy production and reduced savings. Beyond cost reductions, the initiative also enhanced the resilience of water supply systems, ensuring continuous operation even during power outages, and contributed to environmental conservation by reducing dependence on fossil fuels.
The success of the Riu 2 solarisation project has prompted plans to replicate similar initiatives across other boreholes in the county. By harnessing solar energy, Kiambu County seeks not only to cut operational costs but also to promote sustainability, improve service delivery, and support long-term environmental goals. This initiative is part of the county’s broader strategy to invest in renewable energy solutions while ensuring communities have reliable, affordable access to clean water.