C40’s Commitment to Net Zero Carbon Buildings

Status: Under implementation

Area: Global

Short goal:

Long goal: We pledge to enact regulations and/or planning policy to ensure new buildings operate at net zero carbon by 2030 and all buildings by 2050. We commit to owning, occupying and developing only assets that are net zero carbon in operation by 2030.


Our buildings help define our cities – from our iconic skylines to our historic architecture. They are where our citizens, live, work, study and play. These buildings are also one of the biggest sources of greenhouse gas (GHG) emissions, accounting for over half of total city emissions on average, and a significant source of air pollution. Currently, half a million people die each year due to outdoor air pollution caused by energy used in buildings. Delivering on the goals of the Paris Agreement, which science tells us we must, requires urgent and dramatic action to cut emissions from buildings.

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