The company’s sustainability office developed and tested the carbon intensity metric over the past 12 months, with tests showing a resulting 15 percent improvement in the company’s carbon efficiency, from 2009 to 2010. The company has a goal of increasing its carbon efficiency by 15 percent this year.
The metric combines Verizon’s total carbon emissions (in metric tons) resulting from its use of electricity, building fuels and vehicle fuels. This is then divided by the number of terabytes of data that the company transports across its network.
Previously, Verizon used metric tons of CO2 emitted per million dollars of revenue (see chart).
Verizon transported 78.6 million terabytes across its network in 2010, an increase of about 16 percent over 2009 levels. One terabyte equals about 300 feature-length movies.
Verizon says the new metric will help it to improve energy conservation and efficiency, as demand for broadband, IP network services, wireless data and video rapidly increases and raises the company’s electricity consumption.
“We want to make sure our sustainability claims are backed up by solid methodology and numbers that we can share with everyone,” said James Gowen, chief sustainability officer for Verizon. “We developed this metric because we are a network company, and our core measure is the amount of information we transport on our network. So this ratio is closely aligned with our business and will allow us to assess how we are becoming more energy efficient even as our business expands.”
“The information transmitted over Verizon’s networks every day is already equivalent to 215 million copies of the Encyclopedia Britannica, and customers want more,” said Jeremy Symons, senior vice president at the National Wildlife Federation. “It requires a lot of energy to deliver all that data. By setting a goal of a 15 percent carbon-efficiency improvement for 2011, Verizon is helping to minimize the carbon footprint of the digital age even as customers ask for more services.”