"Although the 'percentage of population using solid fuels' is classified as an indicator to measure progress towards MDG 7, reliance on traditional household energy practices has distinct implications for most of the MDGs, notably MDGs 4 and 5. There is an urgent need for development agendas to recognize the fundamental role that household energy plays in improving child and maternal health and fostering eocnomic and social development."
Rehfuess, E., Mehta, S., & Prüss-Üstün, A. (2006). Assessing household solid fuel use: Multiple implications for the Millennium Development Goals. Environmental Health Perspectives, 114(3), 373–378. https://doi.org/10.1289/ehp.8603