ISED in the social dimension measure the impact that available energy services may have on social well-being. Availability of energy services have implications in terms of poverty, employment opportunities, education, community development and culture, demographic transition, indoor pollution and health, as well as gender- and age-related implications. Social ISED describe issues related to accessibility, affordability and disparity in energy supply and demand. In rich countries, modern energy services (lighting, heating, cooking, etc.) are almost universally available. The energy is clean, safe, reliable and affordable. In poor countries, up to six hours a day may be required to collect wood and dung for cooking and heating, and this task is usually done by women. In areas where coal, charcoal, paraffin or kerosene are commercially available, these fuels take up a large portion of the monthly household income. Inadequate equipment and ventilation often means that the burning of these fuels inside the house takes a toll on human health, contributing to disease (and even death) through air pollution and fires. A major difficulty in the development of social ISED is the lack of relevant or adequate data (especially time-series) in developing countries.