Analysis of Requirements for Achieving Carbon Neutrality in a Cold Dense City Using GIS

Photovoltaics (PV) can make a significant contribution to achieving carbon neutrality in buildings. Geographic information systems (GIS) it easy model cities and simulate PV with high accuracy. However, the computational burden from 3D urban models remains high. In this study, complex geometry of city was represented 2D images, we propose method for performing multiple simulations short amount time by using these images. The ratio electricity generation primary energy consumption (EG/E) calculated 415 office buildings Sapporo, Japan, conditions were explored. For small gross floor area, EG/E be higher than one, achieved improving performance exterior walls windows increasing area installed. improve large is necessary consider equipment used efficient operation HVAC system. useful considering ways achieve various cities.