Just like the electric vehicle revolution has transformed the market, the built environment holds the same potential. This case study proves that electric-based approaches can work, with new systems phased in over time. The fundamental principle of this project was a deep examination into the energy flows within commercial office spaces. While lights provide illuminance, they also give off heat. Office equipment and occupants behave much in the same way- they are essential dynamic components within the building program and have a thermal signature that a building’s heating and cooling systems must respond to. The analysis was based on examining opportunities to reuse/recycle/balance these flows via hydronic-based HVAC retrofits at multiple scales of renovation.