Beyond the borehole: a hybrid solar–wind–biogas multifunctional platform for Sahelian pastoral water points — working paper, calculation workbook and feasibility study (Niger)

Working paper (not peer reviewed) and open calculation model for a multifunctional platform at a Sahelian pastoral water point (reference site in Niger). One hybrid solar–wind–biogas system (17.6 kWp PV, 5 kW wind, 3 × 10 m³ digesters, 45 kWh LiFePO4) and one level-controlled pump serve water, a 100 L/day dairy, a 0.5 ha drip-irrigated fodder core, a mill, a health post, a nomadic school and Wi-Fi for about 1,500 people. Investment: 233–263 million FCFA. Operations are self-financing, but about 90 % of capital must be grant-funded (about 46 % if milk collection reaches 300 L/day). Includes the calculation workbook (French) and the full feasibility study (French). Quantities are engineering estimates, not field measurements.