Coliseum Place is a center of innovation in all-electric mid-rise housing, housing 59 low-income and formerly homeless families and built for $53M. With a grant from the International Living Future Institute, Redwood Energy was hired to perform a Zero Net Energy design, implementing a wide range of efficiency efforts to allow the six story building to be 100% powered with a rooftop solar array for Zero Net Energy performance. These efficiency measures included sharing 80 gallon heat pump water heaters among multiple apartments, while avoiding heat loss from recirculation by using manifolds with 3/8ths “skinny” hot water piping, and adopting inverter-controlled, high performance VTACs to reduce HVAC by 30%. Due to a funding cap, the final solar array was reduced to “only” a 40% offset of the entire building’s loads—still an accomplishment rarely seen in other six story apartment complexes. Redwood Energy performed the Zero Net Energy, Title 24, HERS and Green Point Rated certifications. This 96,000 sf. development was completed in 2022.
Redwood Energy has led the design of more than 20,000 units of Zero Net Energy, all-electric affordable housing, and 200 all-electric market rate residences.