Each year, Penn Engineering, Wharton’s Mack Institute for Innovation Management, Penn Wharton Entrepreneurship and the Penn Center for Innovation team up to host the Y-Prize at Penn, an invention competition in which entrants are challenged to pitch an innovative business plan for a technology developed at Penn Engineering. The winning team earns a $10,000 cash prize.

This year’s grand prize winner was Metal Light: Penn Engineering master’s students Ryan Goethals and Darsham Bhosale, Wharton’s Minhal Dhanjy and Kateryna Kharenko, and Leo Li and Yumin Gao of Johns Hopkins University. They plan to build sustainable, affordable lights that draw power from scrap metal, an ideal lighting solution for off-grid homes around the world.

M-Squared, who proposed using the same energy-scavenging technology to build sensors for shipping containers, earned a $4,000 Y-Prize second place award, which was matched with a grant from FabNet.