SK broadband, Electricity saving projects in Internet Data Center and in communications equipment of internet subscribers

[ Summary ]

South Korea decided to include ‘scope 2’ emissions from purchased electricity and steam in ETS from the beginning, considering the regulated electricity market and to push forward reductions from the users. As a result, communications companies, universities, and hospitals are also entities of KETS. SK broadband is one of the distinguished communications companies in Korea that possess communications infrastructure and a variety of ICT platforms providing high-speed internet, IPTV, and industry communications services.

SK broadband is making an effort to save electricity from the communications equipment not just to comply with ETS but also to improve social value for customers.


[ Emissions ]

Period Year Emissions (tCO2e) # of Subscribers (persons) Intensity (tCO2e/persons)
1st Phase 2015 259,587 4,810,000 0.0540
2016 264,833 5,210,000 0.0508
2017 267,828 5,400,000 0.0496


[ Key Success ]

·  New efficient technology in IDC cooling system recognized by Government

·  Investments in electricity efficiency for IPTV set-top box for Business to Business customers



[ Main Activities ]

SK broadband’s GHG emissions are mainly from electricity consumed from communications equipment providing internet service to the customers. As a result, the company is trying to reduce the emissions internally and externally.

Areas Reduction Activities
Internal  Free-cooling technology introduced in IDC(Internet Data Center) from 2015 and reduced 12,000 tCO2e/yr
External  Continuous R&D for electricity efficiency in home STBs(set-top box) since 2013

Before ETS started in 2015, the IDCs had air-cooled type cooling systems that needed heat exchange with refrigerant even in winter, therefore, consumed a lot of electricity.  In 2015, the company was the first one in the sector to switch from the air-cooled system to a free-cooled cooling system that uses water cooled from cooling tower installed outside instead of the refrigerant, investing €7m. Replacing the cooling system saved 26,000 MWh of electricity annually, reducing 12,000 tCO2e/yr.


[ Recognition and Future Plans ]

SK broadband used a designated methodology to evaluate the GHG reduction result from electricity saving in IDCs from 2015 to 2018, and received verification from the 3rd party. The company submitted the results to the Government and received additional allocation of 45,711 tCO2e. SK broadband is a subsidiary of SK Group that considers social value as a core value of business. The company continues to make an effort to reduce emissions not only internally but also externally trying to save electricity consumed by customers. Main activities include R&D to improve efficiency of IPTV and other communications equipment and trying to measure and verify the energy saving by using ICT technologies.