Berkeley Lab: It Takes 70 Billion Kilowatt Hours A Year To Run The Internet
Forbes, June 28, 2016
America’s myriad server farms and data centers operate 100 million drives that hold 350 million terabytes of data — everything from your decade-old emails to lolcat videos and the collected offerings of Netflix.
A new report from the Department of Energy’s Lawrence Berkeley National Laboratory figures that those data centers use an enormous amount of energy — some 70 billion kilowatt hours per year. That amounts to 1.8% of total American electricity consumption. At an average cost of 10 cents per kwh, the annual cost of all that juice is on the order of $7 billion.Our internet addiction is only growing. Can data centers handle the growth? Click To Tweet
Seventy billion kilowatt hours is such a giant number that it’s helpful to put it into some other terms. For comparison purposes, 1 kwh is enough power to keep ten 100-watt lightbulbs illuminated for one hour, or to keep your smartphone charged for an entire year.
Sliced up per capita, the average American uses about 200 kwh a year for his or her internet use, costing about $20. For those of you obsessed with carbon footprints, your internet use is responsible for the emission of about 300 pounds of carbon dioxide per year.
Can our data centers handle the growth? The Berkeley Lab report says that data centers are on track to use 73 billion kwh by 2020. That’s a much slower pace of power demand growth than in the early days of the interwebs — in large part because most new servers are being deployed in very large data centers (think 400,000 square feet) that operate at high utilization rates and with advanced cooling systems and redundant power supplies. If not for increases in efficiency since 2010, data centers would likely be using 200 billion kwh by 2020. More efficiency gains can be achieved by getting rid of “zombie” servers that are obsolete or unused, but still plugged in.
And there’s something else to think about: for all this electricity that we use updating Facebook or streaming Game of Thrones, think about all the energy we’re not using on the stuff we used to have before the internet, like paper phonebooks and encyclopedias, snail mail, fax machines, book stores, Tower Records, Blockbuster Video, nudity in Playboy magazine.
In time the energy we use to power the internet (and the internet of things) will save us even more energy in what used to be called the real world. As the Berkeley Lab researchers wrote in their study, “seamless telework results in less commuting, and driverless vehicles allow for more productive use of commuting time.” More time to enjoy Grumpy Cat.