District Heating Supply Business Utilizing Heat Generated from Used
Water Treatment at Tancheon Used Water Heat Energy Utilization Facility

_{Korea’s largest Public-Private Partnership}

Facility Overview

POSCO ENERGY supplies district heating by recovering heat energy generated from used water, which is treated at
a used water treatment plant, with heat pumps. District heating supply facility utilizing heat generated from used water treatment
has been operated in Tancheon used water heat energy utilization facility since 2014 and planned to be transferred
to Seoul after operation for 15 years. POSCO ENERGY is producing and supplying heating energy for 20,000 households to use annually.

Eco-friendly Effect

District heating supply facility utilizing heat generated from used water treatment at Tancheon used water heat energy utilization
facility produces 200,000 Gcal of heat annually. This has the effect of replacing the LNG as fossil fuel by 19,000,000 Nm³annually
and about 44,000 ton of CO₂ reduction effect.

Utilization process of heat energy from used water

1.1 million ton of domestic used water discharged from the vicinity of Tancheon used water heat energy utilization
facility is being discharged into the Han River daily after the sewage treatment process in Tancheon used water heat energy
utilization facility. The used water discharged finally has the heat of 12℃ on the average in the winter time. POSCO ENERGY is supplying heating energy in the neighborhood area by collecting the heat energy
that was thrown out through heat pump and increasing the temperature.

View detail