frames, airtightness, shading, ventilation, cool roofs. Conditional. 5, 7, 8, 9, 11,. 28. Implementation of “passive cooling” measures in the cities (addressing urban heat island effect [UHIE]), public buildings and commercial buildings. Energy. Ministry of Land. Management, Urban Lanning and Construction. (MLMUPC). Environment and Natural Resources Code, which has a chapter on Sustainable Cities, making it a requirement for the capital city and cities over 200,000 people to develop a Green City Strategic Plan and identify green city development projects. 0.07 Mt CO2e emissions until 2030. 2 cities ( Phnom. Penh and Siem Reap) analysed for mitigating UHIE and. projects are. implemented. - 2% of the existing public and commercial buildings are retrofitted with passive cooling measures.