What: The ZEROprize, sponsored by ZEROfootprint, Toronto, Ontario, Canada, communities.zerofootprint.net

Deadline for entry: Rolling

Details: The ZEROprize is open to design teams that use re-skinning and other retrofitting technologies on an older concrete high-rise structure to reduce its carbon, water, and energy footprint to net-zero while also maintaining high architectural design standards. Among the entry requirements: Buildings in the competition must have a net-zero footprint for one year; must have been constructed of reinforced concrete between 1945 and 1990; and must have a minimum of 150 units or 150,000 square feet (13,935 m2) of floor space. Energy for the structure must be produced by devices within the building and its nearby property and cannot be powered by fuel brought to the building.

For more entry guidelines (including documentation that must be submitted and details on other building restrictions), visit communities.zerofootprint.net/building-re-skinning-competition.