A maternity ward and a college in Zinvie, Benin, have been equipped with two modest PV installations of 600 and 300 watts peak respectively. This project was carried out using a participatory approach that encourages vocations for solar energy and PV installations in particular. It is also the starting point for a socio-economic analysis of willingness to pay. The collected information reveals that consumers have discovered the advantages of solar electricity and are expressing their desire to switch from the national monopoly service, which is more expensive compared to Switzerland, to autonomous PV installations. However, socio-economic data shows that the effectiveness of this transition is still confronted with the high cost of the initial investment, compared to the economic agents' annual electricity consumption budget on the one hand and their annual savings on the other. A draft model in terms of mutual investment is proposed in agreement with the stakeholders concerned for the reversal of mentalities in favour of solar PV energy.