Climate change effects all regions around the world. Like other cities, Hong Kong is facing problems such as rising temperatures and more extreme weather phenomena. Under the Paris Agreement, it is important to limit the global temperature rise to 1.5°C and 2°C in the 21st Century. As a global citizen, Hong Kong must take actions timely to tackle the carbon emission problem at source and mitigate the temperature rise to protect ourselves and or next generations.

Achieving carbon neutrality before 2050 requires the participation and support of the whole community. The Government, business sectors, schools and non-governmental organisations must work together and set an example by promoting and encouraging the public to adopt and practice.

The Government is committed to achieving carbon neutrality before 2050 by implementing four main strategies of "net-zero electricity generation", "energy saving and green buildings", "green transport" and "waste reduction".