Clambering across the sloped roof of King’s College Chapel with the agility of an undergraduate, Toby Lucas, 56, pointed to where his craftsmen had welded solar panels to an expanse of newly installed lead. It was the scariest part of the project, he said, because an errant spark could have ignited the 500-year-old timbers underneath, which hold up the roof of this English Gothic masterpiece. “It’s an iconic landmark in Cambridge, and it’s part and parcel of where I live,” said Mr. Lucas, whose firm, Barnes Construction, did the restoration. “You don’t want to be the person who is responsible for burning part of it down.”The chapel came through the project unscorched and now stands at the heart of Cambridge University, no longer just a glorious relic of the late-medieval period but also a cutting-edge symbol of the green-energy future. Its 438 photovoltaic panels, along with solar panels on the roofs of two nearby buildings, will supply a shade over five percent of the college’s electricity.

---

Persons: Toby Lucas, ”, Lucas Organizations: Barnes, Cambridge University Locations: Cambridge