 The dairy sector in Tunisia is largely composed of small-scale farms, with most owners having fewer than five cows. These farms store their milk in plastic containers, which leads to significant post-production losses. To address this issue, the authors of this paper propose a new solar-powered milk cooling system as a viable alternative. This system was tested on three small-scale farms in central Tunisia, comparing them against a control group of farms without any milk cooling equipment. The results showed that milk cooling significantly reduced milk rejections to zero, leading to increased production of 6,400 liters per cow over the course of five years. Furthermore, the use of solar-powered milk cooling technology led to higher milk sales and improved profitability compared to the control group. This study provides a sustainable energy solution for milk cooling on small farms, especially those located in remote areas with limited access to electricity or unable to afford electric milk cooling equipment. This article was authored by Mariams Louis, Mohamed Zidraef, Mohi Eldain Hilali and others. We are article.tv, links in the description below.