Retrofit R-19 ceiling insulation is evaluated as a natural gas conservation measure in San Diego, California. A statistical measurment comparing 82 test homes and 104 matched control homes resulted in a 95% confidence interval lower bound saving of 21% of total December–February natural gas...

This paper presents an energy demand model for the U.S. which involves four classes of variables: population, per capita GNP, lifestyle and technology. The model is implemented on a computer with an interactive graphics terminal. This allows a user to describe future scenarios in terms of the...