Entrepreneurs in Nairobi Make the Case for Going Solar
For one shopkeeper, a solar-powered grain mill is transforming her ability to maintain a thriving business.
By Geoffrey Kamadi | June 17, 2026
In the bustling neighborhoods of Nairobi, a quiet energy revolution is taking hold. Small-scale entrepreneurs are increasingly turning to solar power—not just to cut costs, but to unlock entirely new business opportunities. As of 2026, solar adoption among micro, small, and medium enterprises (MSMEs) in Kenya has surged by over 40% compared to 2023, driven by falling panel prices and innovative financing models.
A Grain Mill Transforms a Business
Milcah Wanjiru, a shopkeeper in Nairobi's Mathare area, once struggled with unreliable grid electricity that cut her grain milling operations short. Frequent blackouts meant lost income and spoiled inventory. In early 2025, she invested in an Agsol solar-powered milling machine—a rugged, portable unit designed for off-grid African markets.
“Now I can mill maize and millet from sunrise to sunset, and even on cloudy days, the battery backup keeps me going,” Wanjiru explains, feeding a stream of corn kernels into the machine’s funnel. The solar system, comprising two 300W panels and a lithium-ion battery storage unit, powers both the mill and her shop lighting for up to eight hours.
Her revenue has grown by 60% since the switch. “I no longer pay for diesel or worry about grid bills. Customers come from farther away because they know I’m always open,” she adds.
Why Solar Works for Nairobi’s Entrepreneurs
The case for solar in Nairobi’s informal sector is compelling:
- Cost savings: Grid electricity costs in Kenya have risen by nearly 30% since 2020, while solar panel prices have dropped by over 75% in the same period.
- Energy reliability: Despite improvements, grid outages still average 2-3 hours daily in many Nairobi neighborhoods. Solar-plus-storage systems provide consistent power.
- Business growth: Reliable energy allows extended operating hours and the ability to offer value-added services like cold storage or charging stations.
“We’re seeing a shift from solar being a backup to being the primary power source for small businesses,” says Grace Ochieng, an energy analyst at the Kenya Renewable Energy Association. “In 2026, payback periods for solar installations have shrunk to 12–18 months for many enterprises.”
From Lighting to Productive Use
The trend goes beyond basic lighting. Entrepreneurs are adopting solar for:
- Agro-processing: Grain mills, oil presses, and coffee pulpers
- Refrigeration: Cold storage for dairy, meat, and produce
- Digital services: Phone charging, internet hotspots, and small-scale 3D printing
“The most exciting development is ‘productive-use solar’—power that directly generates income,” Ochieng notes. “Donors and fintech companies are now offering lease-to-own models that make these systems affordable.”
Challenges and the Road Ahead
Despite the optimism, barriers remain. Upfront costs—still $1,000–$3,000 for a robust system—can be prohibitive. Counterfeit equipment and lack of after-sales service also plague the market. However, government initiatives like Kenya’s 2025–2030 Energy Transition Plan include tax waivers on solar components and subsidies for MSMEs.
For Wanjiru, the benefits are clear. “Solar has given me independence. I’m not waiting for anyone to turn on the lights—I have my own power, and my business is growing every day.”
As Nairobi’s entrepreneurs increasingly prove, going solar isn’t just an environmental choice—it’s a smart business decision in 2026 and beyond.