Energy consumption of telecommunication access networks

An integrated and optimised Router-ONT-Device would help to reduce the power consumption for the customer premises equipment. The AVM Fritzbox 5490 for example has an average power consumption of approximately 11 watts. To use router devices without a modemwould reduce the power consumption. A MikroTik Router Board RB 951G for example has a power consumption between 3.2 watts and 4.2 watts. The power consumption for the customer premises equipment can easily be reduced by using different devices. 6.4.4 Total power consumption FTTH – Point-to-Point Power consumption access network Power consumption CPE PoP size Power consumption (incl. air conditioning) per subscriber [W] Number of PoPs Number of subscribers Total power consumption access network P [W] Power consumption per ONT P [W] Power consumption per router P [W] Total power consumption CPE P[W] 1,000 2.30 21 20.856 47,969 3.5 10 341,699 750 2.60 2 1,438 3.739 500 3.20 3 1,207 3,862 250 4.50 7 1,556 7,002 100 7.20 3 254 1,829 50 10.00 – – – Total 36 25,311 64,401 341,699 Total power consumption access network + CPE P [W] 406,099 Figure 28: Total power consumption of the FTTH – Point-to-Point network in the model region. The overall power consumption for an FTTH – Point-to- Point network in themodel region is shown in Figure 28. As can be seen, the largest share of the total power consumption is generated by the customer premises equipment – approximatley 84%. In total approximately 406 kWare needed to operate the network. This leads to annual CO 2 emissions of 1,899 tonnes. 6.4.5 Total power consumption FTTH – GPON Power consumption access network Power consumption CPE PoP size Power consumption (incl. air conditioning) per subscriber [W] Number of PoPs Number of subscribers Total power consumption access network P [W] Power consumption per ONT P [W] Power consumption per router P [W] Total power consumption CPE P[W] 1,024 0.68 23 22,294 15,160 3.5 10 341,699 512 1.15 13 3,017 3,470 Total 36 25,311 18,629 341,699 Total power consumption access network + CPE P [W] 360,328 Figure 29: Total power consumption of the FTTH – GPON network in the model region. The overall power consumption for an FTTH – GPON network in themodel region is shown in Figure 29. As can be seen, the largest share of the total power consumption is generated by the customer premises equipment – approximately 95%. In total approximately 360 kWare needed to operate the network. This leads to annual CO 2 emissions of 1,685 tonnes. 27