Sweetwater

“Solar Ready” Path to ZNE. While zero net energy was a goal throughout the project, financial constraints eliminated the option to install PVs in the final construction documents. The massing and layout of the buildings were still optimized for maximum…

Building Owner/Representative: Sweetwater Spectrum, Sonoma, Calif. Architect: Leddy Maytum Stacy Architects, San Francisco General Contractor: Midstate Construction, Petaluma, Calif. Mechanical, Electrical Engineer, Energy Modeler: Timmons Design Engineers, San Francisco Structural Engineer: Structural Design Group, Santa Rosa, Calif. Civil Engineer: Adobe…

Annual Water Use:  861,000 gallons: includes all four residences, community building and site irrigation except water used for the farm, which is well water and is not metered

Name: Sweetwater Spectrum Location: Sonoma, Calif. (33 miles NE of San Francisco) Owner: Sweetwater Spectrum Principal Use: Residential Includes: Therapy pools, farm Employees/Occupants: 16 residents, 3 full-time staff, 8–12 contract employees Percent Occupied: 100% Gross Square Footage: 16,315 Distinctions/Awards: 2015…

Annual Energy Use Intensity (EUI) (Site): 42.8 kBtu/ft2 Electricity (Grid Purchase): 28.4 kBtu/ft2 Electricity (on-Site Solar or Wind Installation): 14.4 kBtu/ft2 Annual On-Site Renewable Energy Exported: 1.3 Annual Net Energy Use Intensity: 27.2 Annual Source (Primary) Energy: 103.7 Annual Energy…

Roof​ Type: Standing seam metal and built up Overall R-value: 53.2 Reflectance: 0.34 Emittance: 0.87 Walls Type: Wood 2 × 6 framing, 24 in. O.C. Overall R-value: 22 Glazing Percentage: 22% Basement/Foundation Slab Edge Insulation R-value: R-7.5 Under-Slab Insulation R-value:…