Calculating energy-saving potentials of heat-island reduction strategies

In residences heated with gas and in climates with greater than 1000 cooling-degree-days, the annual electricity savings in Pre-1980 stock ranged from 650 to 1300 kWh/1000 ft2; for 1980+ stock savings ranged 300-600 kWh/1000 ft2. For residences heated with electricity, the savings ranged from 350 to 1300 kWh/1000 ft2 for Pre-1980 stock and 190-600 kWh/1000 ft2 for 1980+ stocks. In climates with less than 1000 cooling-degree-days, the electricity savings were not significantly higher than winter heating penalties. For gas-heated office buildings, simulations indicated electricity savings in the range of 1100-1500 kWh/1000 ft2 and 360-700 kWh/1000 ft2, for Pre-1980 and 1980+ stocks, respectively. For electrically heated office buildings, simulations indicated electricity savings in the range of 700-1400 kWh/1000ft2 and 100-700 kWh/1000 ft2, for Pre-1980 and 1980+ stocks, respectively. Similarly, for gas-heated retail store buildings, simulations indicated electricity savings in the range of 1300-1700 kWh/1000 ft2 and 370-750 kWh/1000 ft2, for Pre-1980 and 1980+ stocks, respectively. For electrically heated retail store buildings, simulations indicated electricity savings in the range of 1200-1700 kWh/1000 ft2 and 250-750 kWh/1000 ft2, for Pre-1980 and 1980+ stocks, respectively.