The Harmonized Index of Consumer Prices category "Electricity, Gas, Solid Fuels, and Heat Energy (ELGAS)" is a classification of nondurable goods and energy that includes Electricity (04.5.1), Gas (04.5.2), Solid Fuels (04.5.4), and Heat Energy (04.5.5). Information provided in the notes pertaining to Special Aggregates HICP classifications can be found from the source at: http://ec.europa.eu/eurostat/cache/metadata/en/prc_hicp_esms.htm. Copyright, European Union, 1995-2016, http://ec.europa.eu/geninfo/legal_notices_en.htm#copyright.