As solar prices plummet and heat pump performance continues to improve, the combination of grid tied solar electric systems and cold climate heat pumps presents a remarkable opportunity on the mechanical side of net zero building performance. Participants will learn how heat pump technology works, to perform a basic load analysis, to estimate annual electric consumption using heat pump performance specs, and to estimate a solar system size in order to achieve zero carbon heat. Actual results will also be compared to design phase modeling projections.