Net energy consumption in overall networks can be reduced up to 90% in 2020, says GreenTouch

By Editor


Greentech Lead Asia: GreenTouch, the global consortium dedicated to dramatically improving the energy efficiency of data and communications networks, finds that net energy consumption in overall networks can be reduced up to 90 percent by 2020.

Energy efficiency is defined as the ratio of the useful traffic carried by a network and the total energy required to support that traffic over a year.

The study was conducted as part of GreenTouch’s Green Meter analysis, undertaken by the consortium to assess progress towards its goal.

The study applied advanced modeling to better understand potential network operations in 2020, taking into account dramatic increases anticipated in communications traffic over the next decade. The research evaluated energy efficiencies in different types of networks, comparing those in 2010 with those incorporating the technologies and architectures the consortium has identified that could be in use by 2020.

Models encompassed a combination of forecasting and trend projections, theoretical and analytical calculations, semi-analytical optimizations and network simulation, and focused on determining potential energy efficiency improvements as well as energy reductions.

The findings will be made available to service providers for identifying technologies, architectures and protocols to improve network energy efficiency.

The research finds that mobile networks stand to benefit the most from energy efficiency efforts, as they are the most inefficient and yet the fastest growing networks in terms of data volumes.  Mobile networks could realize potential energy efficiency improvements of up to 1043 times.

Energy efficiencies in fixed-line and core networks are also expected, but will be less dramatic. The modeling shows potential improvements in fixed access networks of 449 times and improvements in the core network of 95 times. Such networks are already relatively energy-efficient, so further gains will be less significant and much harder to achieve than with mobile networks.

“We are extremely proud of the progress we’ve made in our first three years, yet there is still much more we can do to improve efficiencies and effectively reinvent technologies in the name of environmental stewardship,” said Thierry Van Landegem, chairman, GreenTouch. “Reducing energy by 90 percent is conservative as we have many projects underway whose effects were not taken into account in that number.”

Some of the new technologies, architectures and protocols included in the 2020 modeling are small cells-deployment in dense urban environments, infrastructure-sharing across operators, discontinuous transmissions during periods without traffic, dynamic allocation of resources and the GreenTouch-developed Bit Interleaved Passive Optical Network (Bi-PON) protocol.

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