Nearly two years ago, St. Patrick's Cathedral removed the scaffolding that had been shrouding its neo-Gothic facade to reveal a restored landmark. The work was part of a larger four-year $177 million restoration and conservation that's also included an interior overhaul, renovation of the garden, and a new heating and cooling system. This last component is also now complete, as The Architect's Newspaper reports that the Cathedral has activated their new, state-of-the-art geothermal plant, just in time to warm things up for St. Patrick's Day. The system will cut the building’s energy consumption by more than 30 percent and reduce CO2 emissions by roughly 94,000 kilograms.
How did they accomplish this?