boosts power reliability, indoor air quality, and energy co-ownership among residents. To meet California's 2030 emissions reduction goals, addressing retrofit challenges is crucial. The EcoBlock model scales up by retrofitting multiple neighboring homes, combining energy efficiency, electrification, water conservation, rooftop solar with battery storage, EV car sharing, and curbside charging. Recognized as a notable 2022 microgrid project, it rapidly reduces carbon emissions, builds energy resilience, and strengthens community bonds through cooperation.