Article summary draft 1 - District heating and cooling systems

ENGIE is an internationally known comfort systems provider that provides heating and cooling systems to spaces while aiming to reduce CO2 emissions. With the use of renewable energies, ENGIE supplies heating systems that emit hot water and saturated steam. They also operate free cooling systems in the production plant as a cooling network by dispensing through a cooling tower with the existence of a nearby water source. Comparable to conventional air conditioning, a free cooling system reduces electricity usage, CO2 emissions, water consumption, and energy usage.

ENGIE has been providing heating systems globally with reclaimed waste energy from steel mills, natural heat from deep underground aquifers, and biomass cooling plants. They also supply cooling networks by making use of cooled river water and cooling plants. Furthermore, ENGIE's heating and cooling networks utilize local renewable energy, ocean thermal energy, and domestic water to generate heat and chilled water. 

By optimizing a city-scale centralized thermal energy network, ENGIE has achieved its aims by reducing CO2 emissions (ENGIE, 2013).

Reference:

ENGIE . (2013, February 21). District heating and cooling systems: Engie. Engie.com., from https://www.engie.com/en/businesses/district-heating-cooling-systems.