In Sub-Saharan Africa, there are active debates about whether increases in energy access should be driven by investments in electric grid infrastructure or small-scale “home solar” systems (e.g., solar lanterns and solar home systems). We summarize the results of a household electrical appliance survey and describe how households in rural Kenya differ in terms of appliance ownership and aspirations. Our data suggest that home solar is not a substitute for grid power. Furthermore, the environmental advantages of home solar are likely to be relatively small in countries like Kenya, where grid power is primarily derived from non-fossil fuel sources.

We study household decisions to acquire energy-using assets in the presence of rising incomes. We develop a theoretical framework to characterize the effect of income growth on asset purchases when consumers face credit constraints. We use large and plausibly exogenous shocks to household income generated by the conditional-cash-transfer program in Mexico, Oportunidades, to show that asset acquisition is nonlinear, depends, as predicted in the presence of credit constraints, on the pace of income growth, and both effects are economically large among beneficiaries. Our results may help explain important worldwide trends in the relationship between energy use and income growth.