A Study on the Methodology for Estimating Greenhouse Gas Reduction in Apartment Complexes Using Solar Power, ESS and Heat Pumps

As the Republic of Korea strives toward its "2050 Carbon Neutrality" goal, the building sector -particularly apartment complexes-faces an urgent need for innovative greenhouse gas (GHG) reduction strategies.This paper proposes a comprehensive methodology for estimating GHG reduction by implementing a synergistic system that integrates photovoltaic (PV) power, Energy Storage Systems (ESS), and Heat Pump technology.This study first analyzes the limitations of traditional heating methods.It develops an integrated model in which PV-generated electricity, managed via an ESS, powers high-efficiency heat pumps for space heating and domestic hot water.The primary focus of this thesis is to establish a standardized estimation methodology compatible with the Korea Emissions Trading Scheme (K-ETS) and the External Project framework.Key technical contributions include defining the project boundary, calculating baseline emissions from conventional grid and gas boiler use, and determining project emissions using the integrated system's operational data.Furthermore, the study details a robust monitoring methodology that identifies critical parameters such as PV output, ESS efficiency, and heat pump COP.The proposed framework provides a technical basis for certifying carbon credits in the residential sector and offers a practical tool for policymakers to incentivize sustainable energy transitions in urban environments.