Purpose
Every existing building is different, so it is essential first to develop an implementation plan that acknowledges the current state of the building. Ideally, upgrades should follow the sequence above which emphasizes energy conservation through passive strategies like envelope upgrades before mechanical upgrades and onsite energy production. All upgrades interact with each other and sequencing and phasing requires careful consideration. Electrification offers energy savings, comfort, cleaner indoor air quality, smart controls, energy independence, resilience, and future-proofing the electric grid to be cleaner and healthier down the line. Existing buildings are our largest building stock and contain large amounts of embodied carbon. The value of preservation and smart updating grows when embodied carbon is considered. If cost barriers are present, a slower, phased approach to retrofitting is recommended.
Strategies
Work with a professional / consultant to analyze upgrades defined above for synergy, feasibility, and sequencing.
Run proposed scenarios through energy modeling to evaluate costs vs benefit. A phased approach over time might be the best approach for buildings with limited budgets.
Smart planning can allow for future-proofing and long-term success.
Prioritize opportunities for electrification.
Changes to the exterior envelope can play a large role in the safety of combustion appliances, the need for mechanical ventilation, and condensation risks therefore working with a professional consultant on upgrade strategies is extremely important.