Solar mills are reshaping Nairobi’s street markets. Milcah Wanjiru runs a corner stall that sells milk, bread and matches while grinding grain in a solar‑powered Agsol machine. The device, first sold in 2018, replaces diesel‑driven mills that cost farmers extra energy bills. Wanjiru reports the solar unit cuts her operating costs sharply for her small business.

Wanjiru’s mill can grind grain at a speed that adjusts when particles are damp, a feature that sometimes causes jams. Despite this, the machine’s efficiency lets her handle small batches, attracting new customers. In Kenya, 40% of diesel‑mill profits go to fuel, while Agsol’s solar version can be 80% more profitable after payback in months.

The initial cost sits at $1,300, and payback occurs between six and twelve months. Since its launch, Agsol has shipped 530 units across Kenya, Mozambique and Angola. The company secured more than $4 million in funding, largely through a UK government clean‑energy program that backs regional projects for off‑grid solar initiatives in sub‑Saharan Africa today and and.

Wanjiru notes the mill’s portability and low fuel use have opened new revenue streams. Villagers now bring small grain quantities that diesel models refuse to process. As Kenya pushes toward universal electrification by 2030, off‑grid solar solutions like Agsol’s mill could reduce emissions while boosting rural livelihoods for small businesses and community growth in 2025.