Indra's Energy+ Household
Net positive energy with day to day transportation for 5 years running
Completion
Completion date
12/20/2011
Occupancy
Owner occupied. 4 full time occupants. 2 adults and 2 children. Both adults working. Children go to school. 5 weeks per year average unoccupied due to vacations. Occasional guests.
Days per year Building is fully occupied:
330
Scope
| Type of Construction | Retrofit |
|---|---|
| Number of buildings | 1 |
| Floor area of each building | 2,670 |
| Bedrooms | 4 |
| Bathrooms | 3.0 |
| Stories | 1 |
| Conditioned Building Volume | 20,000 cu ft |
| Conditioned Floor Area | 2,170 sq ft |
| Unconditioned Floor Area | 500 sq ft |
Location and Climate Details
Single-family residence
| Address |
18870 Barnhart Avenue Cupertino, CA 95014
United States |
|---|---|
| Location Type | Suburaban |
| Climate Region | Zone 4 |
| Köppen Climate Type | Csb |
| Lat. / Long. | POINT (-122.001994 37.315261) |
| Elevation | 240 ft |
| Solar Insolation | 5.35 kWh/m2/day |
| Annual CDD and Base Temp | 30 | 80 |
| Annual HDD and Base Temp | 2649 | 65 |
Site
Site conditions:
previously developed land
Site description:
Normal suburban plot about 6000 sq ft. Street has houses on both sides. Backs to another similar house on a similar street at the back.
Materials and Design Strategy
Materials:
House built to California Code in 1997. Nothing special. Stucco on frame. Concrete slab. Insulation is wall and attic according to code. Double pane windows. Wooden doors. Has large south facing roof suitable for solar panels. Also not of South facing windows to let in winter sun.