Portland has joined 18 other major cities around the world to pledge that all new buildings in their cities will be "net-zero carbon" by 2030.
Net-zero buildings use energy ultra-efficiently and meet any remaining energy needs from renewable sources.
Portland also is one of 13 cities that pledged to only own, occupy and develop assets that are net-zero carbon by 2030.
The commitments are part of the C40 Cities movement of major world cities, including Portland, that are leading the charge against dramatic climate change while many of their national governments — including the Trump administration here — fail to adequately respond to the climate crisis. The 19 cities making the main pledge have a combined population of about 130 million people.
The C40 organization announced the pledges in the lead-up to the Global Climate Action Summit scheduled Sept. 12 to 14 in San Francisco.
Other cities signing the Net Zero Buildings Declaration are Copenhagen, Johannesburg, London, Los Angeles, Montreal, New York City, Newburyport, Paris, San Francisco, San Jose, Santa Monica, Stockholm, Sydney, Tokyo, Toronto, Tshwane, Vancouver & Washington D.C.
The cities also pledged to ensure that all buildings in their communities, old and new, will meet net-zero carbon standards by 2050.
"Portland has been a longtime global leader in environmental initiatives and I look forward to continuing to advocate and fight for ambitious environmental strategies," said Portland Mayor Ted Wheeler in a prepared statement. "Ensuring Portland's old and new buildings achieve net zero carbon use is an essential challenge I am ready to take on."
Participating cities will establish a road map to reach the ambitious green-building goals, and develop incentives and other policies. They must also report annually on progress being made to meet the targets.
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