Design a Financially Sustainable Solar Micro-Grid for a Nigerian Village

Donor-funded solar installations appear across rural Nigeria — and a troubling number of them go dark within 18 months because there is no revenue model to pay for maintenance, parts replacement, or the person who manages the system. Your challenge is to design a financially sustainable business model for a solar micro-grid serving a village of 200 to 500 households in northern or south-south Nigeria. The model must cover costs, pay a local operator a living wage, and not depend on donor funding after year two. Submit: a business model canvas, financial projections for 3 years, the role of a local operator, tariff structure, and how you handle non-payment without cutting off vulnerable households. Judging criteria: 40% financial sustainability, 30% community equity, 20% operational feasibility, 10% clarity.