Government Plans Vertical Garden on Portland Skyscraper

Architects claim the vegetated wall will block out summer heat and let in winter light to produce substantial cost and energy savings. When combined with solar panels, low-flow plumbing fixtures, and rainwater usage, the high-rise is predicted to use 60-65% less energy than comparable buildings and could save $280,000 annually in energy costs.

Not everyone is a fan of the proposal: despite the fact that it would be one of the most efficient high-rises in the world, a number of critics say the price tag is staggering for a renovation and the cost per square foot could be higher than that of some new, energy efficient projects.

Thanks to Rebecca Sanborn Stone