A close look at the numbers, say some researchers, suggests that the opposite is true -- that the Net may actually be helping to drive down overall energy demand. Joseph Romm, a former assistant secretary at the U.S. Department of Energy, notes that from 1992 to 1996 total energy demand grew at about 2.4 percent a year in the U.S., during a period when the gross domestic product was growing at a rate of 3.2 percent a year. But from 1996 to 2000, when the Net boom was really taking off, the gross domestic product grew at an average of 4 percent a year while energy demand grew at a rate of only 1 percent. In other words, the growth in energy demand was far below the growth in the overall economy; as the economy grew hotter and hotter the rate of increase in the demand for energy actually slowed.