s katsumoto 1 15 ghg emission trends of the internet in japan indications to facilitate research face a challenging topic global warming and it is estimated that some 27 million people were using at end 1999 this figure about 6 times number for previous year ministry posts telecommunications 2000 as shown users most likely continue burgeoning expected reach nearly 80 2005 more than 60 percent japanese connected penetration 0 1000 3000 4000 5000 6000 7000 8000 1995 1996 1997 1998 ter n et u er mi ll io 20 40 100 pe net r t i on rat e large scale companies small enterprises households source communications usage trend survey digitalized lifestyles 2 such dramatic increase results substantial amount new energy consumption inevitably yields
