Nation's Largest Net-Zero Mixed Use Project Planned for Philadelphia

Branden Klayko reports on the pioneering project planned by innovative Philadelphia design-build developers Onion Flats.

Planned for a site on the banks of the Schuylkill River, The Ridge is intended to become the nation's largest Passive House. Scheduled to be completed in 2014, the building will be prefabricated in a facility just outside Philadelphia.

Sustainable elements include power generated by a 200-kilowatt solar array and a completely permeable, green-roof covering the site.

The technical aspects of solving the net-zero energy puzzle are not the only challenges for Onion Flats. "What's going to be important is to demonstrate that it's easier to meet Passive House standards on large-scale buildings than small buildings," [Timothy] McDonald, [Principal] said. "We want to show that it's not only possible but also much easier to take on larger buildings without losing quality design."

Full Story: Passive Progressive


Build Your Own Paper Block City

Urban Fold is an all-inclusive kit that allows anyone to build the city of their dreams with a few simple folds.
building block set

NEW! Build the world you want to see

Irresistible block set for adults when placed on a coffee table or desk, and great fun for kids.
AICP CTP Storefont Display

The first online AICP* CTP exam prep class

Are you ready to take the AICP* Certified Transportation Planner exam?
Priced at $245 for May exam!

City Coasters

Hand-drawn engraved maps of your favorite neighborhoods are divided up across 4 coasters making each one unique.