Reported energy savings from shade of trees in summer, as percent of air conditioning energy use by an unshaded house.
| % | |
| Computer modeling | |
| Heavy shade on all walls and roof of a concrete block house in Fla. (5) | 19 |
| "Optimally landscaped" trailer on July 23 in Ga. (4) | 52 |
| Shade of mature tree canopy on small test house in Davis, Calif. (33) | 10-40 |
| Shade on N, E, and W sides of wellinsulated house in Chesapeake, Va. (8) | 11 |
| Measured in mobile homes | |
| Dense shade by a deciduous grove in Pa. (13) | 75 |
| Landscape trees in Fla. (41) | 40 |
| Partial tree shade in Ala. (30) | 59 |
| Shaded conventional houses in Tex. (44)a | 11-24 |
↵a I made the assumption that winter electricity bills represented energy use for purposes other than space conditioning