The New Science and Engineering Building at Cape Cod Community College is intended to exemplify CCCC's commitment to net zero emissions as one of the original signatories to the ACUPCC, and replaces an existing building. Through detailed energy modeling and life cycle cost assessment, the design team concluded that an electric-driven air-source heat pump solution would pay back within the life of the equipment, and several energy conservation measures proactively minimize the annual EUI to 52 kBTU/sf, with rooftop PV reducing net EUI to 19 kBTU/sf. In order to continue operation and mitigate damage from extended loss of power during winter storms and maintain heating during extreme cold weather, the air source heat pump system is supplemented by a high-efficiency boiler. An energy and emissions analysis determined that the net effect of the boiler on emissions over the life of the system was negligible, because of its infrequent use. Furthermore, the gas boiler provides fuel and equipment redundancy. Finally, the cost of this supplemental heating system is offset by the savings on emergency generator size.