#crs23610 - Heat plants Power plants which are designed to produce heat only
#crs23620 - District heating and cooling Distribution of heat generated in a centralised location, or delivery of chilled water, for residential and commercial heating or cooling purposes
#crs23630 - Electric power transmission and distribution Grid distribution from power source to end user; transmission lines. Also includes storage of energy to generate power (e.g. pumped hydro, batteries) and the extension of grid access, often to rural areas
#crs23640 - Gas distribution Delivery for use by ultimate consumer