Incorporating the original purpose of the Black Hawk Mini Park to serve as “guardians of the land,” and as a hands-on follow-up to Iowa City’s recent commitment to the Compact of Mayor’s climate agreement, the 100 Grannies’ proposal is based on the globally acclaimed “Energy Tree” in Bristol, England’s central Millennium Square, which combines “community collaboration, artistic excellence, and science in a public art installation and renewable power source designed to engage the public in energy issues and address social inequality.”

Source: Iowa City’s Solar Tree: 100 Grannies Lead Groundswell for Downtown Public Art Showcase