Baseline studies of an NREN and the whole GÉANT network

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Baseline studies of an NREN and the whole GÉANT network

Anastasios Zafeiropoulos, GRNETGN3 Green networking: advances in environmental policy and practiceUtrecht, 05-06/03/2012


Outline

Introduction – Energy efficiency demandGreen GÉANT Team: GHG reportsGÉANT GHG ReportGRNET GHG ReportComparative data – StatisticsGreen GRNET activitiesNext Steps


Introduction

The energy consumption of the Internet is explodingincreasing number of devices connected to it continuous expansion of networksexplosion of traffic volume fuelled by video and mobile data applications

ICT sector accounts for more than 2% of global carbon emissions.Energy expenses constitute nearly 25% of the total network costs.Restrictions on carbon footprints and increased emphasis on corporate responsibility.

The energy consumption of the Internet will be one of the main challenges that technology will have to face in the future.

First step is to measure – Then, to act in order to reduce consumption and emissions


Energy consumption trend and potential energy saving

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2005 2010 2015 2020

Ener

gy C

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Energy savings

BAU

ECO

Energy consumption estimation for the European telcos’ network infrastructures in the “Business-As-Usual” (BAU) and in the Eco sustainable (ECO) scenarios, and cumulative energy savings between the two scenarios.

Source: European Commission DG INFSO report

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2005 2010 2015 2020

billi

on $

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OPEX savings

BAU

ECO

OPEX estimation related to energy costs for the European telcos’ network infrastructures in the “Business-As-Usual” (BAU) and in the Eco sustainable (ECO) scenarios, and cumulative savings between the two scenarios.

Source: R. Bolla, R. Bruschi, F. Davoli, F. Cucchietti, “Energy Efficiency in the Future Internet: A Survey of Existing Approaches and Trends in Energy-Aware Fixed Network Infrastructures,” IEEE Communications Surveys & Tutorials, vol. 13, no. 2, pp. 223-244, 2nd Qr. 2011.


GÉANT Green Team – GHG audits

Measuring and monitoring GHG emissions are essential features of a strategy to reduce such emissions.The GÉANT Green Team has been carrying out audits of the greenhouse gas (GHG) emissions of NRENs and the GÉANT pan-European network. The Green Team has adopted the ISO 14064 standard for its carbon audits. A common scheme or template for their networks has been adopted, to enable the audits to be carried out in a methodical and consistent manner.


GÉANT Green Team – GHG audits

The ISO standard and associated sources refer collectively to the greenhouse gases. The standard lists 26 such gases, each with its own global-warming potential. The predominant gas is Carbon Dioxide, CO2, but there are several other reasonably familiar chemicals, such as Methane (CH4), Nitrous Oxide (N2O), and the Hydrofluorocarbons (HFCs).

As CO2 is the largest component of GHG emissions, it is often used as the reference for all such gases. The exclusion of other GHGs does not affect the overall results significantly, as CO2 has by far the largest share in global GHG emissions.


Completed NREN GHG audits

Network Type of Research and Education Network

Responsible Partner

Year

GÉANT Pan-European (30+ countries) DANTE, UNI-C 2009

HEAnet National HEAnet 2009

HUNGARnet National NIIF 2009

NORDUnet Regional (5 countries) UNI-C 2009

PIONIER National PSNC 2009

SURFnet National SURFnet 2010

GRNET National GRNET 2010


Organizational components for the GHG inventory

Office emissions from heating, air conditioning and electricitythe office space, whether owned or leased, used by an NREN to house its staff. Network Backboneequipment managed by the NREN as part of its backbone network. dark fibre and associated equipment, and access circuits if they are dark fibre. leased wavelength circuits.Customer Premises Equipment (CPE) that is managed by the NREN.


Organizational components for the GHG inventory

Data centersthe data centers used by the NRENs, whether owned or rented, are facilities that consume significant amounts of electrical power. Transportationtransportation used by staff in carrying out their duties for the NREN

– transportation involved in commuting to and from work– transportation necessitated by travel for the NREN (travel to

work at off-site facilities, attendance at conferences, meetings with clients at their institutions, etc.)


GÉANT GHG Audit

Organizational Boundariesdirect and indirect GÉANT-related emissions of the offices, data centers, and network links owned or leased by DANTE.the emissions produced by business and commuting travelling by the employees.

Direct EmissionsDANTE does not own any car or other transportation vehicle or any other source of direct emission of the GHGs listed below. the direct Carbon Dioxide equivalence (CO2-eq) emission is 0 tons CO2-eq.


GÉANT topology

GÉANT topology – June 2011


GÉANT GHG Audit – Indirect emissions

Office emissions from heating, air conditioning and electricitythe DANTE main office values are based on bills from the electricity and gas providers. energy consumption in DANTE offices including the NOC. totally 243 tons CO2-eq.Data centersthe electricity consumption figures for the data center hosted equipment are based on detailed data sheet specifications. PUE factors are in general not yet available from most data centers and therefore a common PUE factor of 1,7, based on measurements at UNI-C’s data center during 2009.totally 1094 tons CO2-eq.



Network Backboneall equipment managed by the GÉANT as part of its backbone network. It includes any dark fibre and associated equipment, and access circuits if they are dark fibre, as well as leased wavelength circuits. the values are based on detailed equipment specifications.a PUE factor of 1,7 has been applied to the theoretical values.leased lines amounting to a total length of 69130 km provide a considerable part of the GÉANT connectivity, accounting for an estimated 10% share of the backbone electricity consumption. to calculate the emissions from these leased wavelengths, a “European mean” of 700g CO2-eq/kWh has been used.

totally 582 tons CO2-eq.



TransportationThese, so-called “scope three” emissions, are partly estimated (commuting), partly traced back from company records (business travelling). For transportation by car, taxi, bus or train, the distance travelled is multiplied by the matching GHG emission coefficients published from the public national information source. For flight transportation, the emission by each trip has been calculated using the International Civil Aviation Organisation’s (ICAO’s) CO2 calculator.

Totally 582 tons CO2-eq.


GRNET GHG Audit

This is the first GHG inventory for GRNET, covering the year January 2010 to December 2010. This period will serve as historical base year as well as base year for this inventory.Data Sources

Real time measurementsManufacturers datasheets and technical documentationOnline database for network equipmentEmission factors from Public Power Corporation S.A reportsGHG emission of heating with a gasoil boiler - http://www.nef.org.uk/greencompany/co2calculator.htmTransportation – input from questionnaire and emission factors from http://www.greenpeace.org/greece/el/getinvolved/137368/137462/ and http://www.carbonfootprint.com/calculator.aspx


Scope 1: Direct GHG Emissions

GRNET does not own any car or other form of motorized transport which causes direct or combustion related emissions of the GHGs listed.GRNET makes use of approximately 45 locations varying in size from a small computer room (a few square meters) to locations with more than 120 square meters. Typically the larger DataCenters make use of oil powered generators as a backup for mains electricity. The use of those oil powered generators is generally restricted to outages and interruptions of mains electricity and periodic operational testing.The total Scope 1 CO2-eq emission is 0 tons.


Scope 2: Indirect GHG Emissions - Office

Office: leased premiseselectricity usage for the office itself. electricity for building services. computer room.total energy consumption in offices: 139.604 KWh 142,54 tons CO2-eq. 1.346 litre of oil 4,1 tons CO2-eq. energy consumption from communal bills: 81.992,3 KWh 83,71 tons CO2-eq. totally 230,35 tons CO2-eq.


Scope 2: Indirect GHG Emissions – Backbone Network

Backbone Networknew generation optical fiber network based on WDM technology at high speeds (1-10 Gbps). the core network is formed by IP routers that are interconnected with PoS 2.5 Gbps circuits over 10Gbps wavelengths that are implemented via owned DWDM equipment.L2 network based on Ethernet equipment totally 445.340 KWh 909,39 tons CO2-eq.


Scope 2: Indirect GHG Emissions – Data Centers

GRNET owns two data centers where high-density computational and storage equipment is installed.

the first data center is hosted in the National Hellenic Research Foundation. This data center hosts the GÉANT Point of Presence (PoP) in Athens as well as a HellasGrid site (Grid node).

– there are 10 racks with servers and 14 racks with telecom equipment.

– average energy consumption for the GÉANT PoP is 63 kW; for the Grid node it is 67 kW.


Scope 2: Indirect GHG Emissions – Data Centers

The second GRNET data center is located within the premises of the Greek Ministry of Education, Lifelong Learning and Religious Affairs.

– 4 racks are hosting servers and 2 racks storage equipment, but GRNET is currently loading 18 extra racks with computational and storage equipment.

– average energy consumption around 90 kW. GRNET operates the HellasGrid infrastructure that consists of 6 Grid Nodes including the previously mentioned one in NHRF. Totally 3.300,33 KWh 6600,66 tons CO2-eq


Scope 3: Other indirect GHG emissions - Transportation

Transportation is necessitated for GRNET staff in commuting to and from work, and in the normal course of work. Transportation “on mission”, for instance, is involved in attending projects’ meetings, or in carrying out on-site maintenance at a network PoP. The sources of these emissions arise from the following sources:

Gasoline and diesel fuel: used by private cars, motorbikes, taxis, buses, and trains. Aviation fuel: used by aircraft for air travel. Electricity: used by trains and trams. 31,14 tons CO2-eq are emitted due to personnel commuting.

93,7 tons CO2-eq are emitted due to personnel flights.

Totally for transportation: 124,84 tons CO2-eq.

Totally for GRNET: 7865 tons CO2-eq.


GRNET GHG Audit - Uncertainties on the Accuracy of the Data

Uncertainties exist in the estimations of emissions that are due to transportation, since the accurate and updated emission factors per type of transportation were not available. Regarding the energy consumption in the GRNET network and data centers, uncertainties exist due to the estimation of data in cases where real time monitoring of energy consumption of the computational, storage and networking equipment was not available.An uncertainty with minor impact to the total tons of CO2 emitted by GRNET has to do with energy consumption from the electricity used by the offices for the building services (lifts, security, lighting) in communal places.


Comparative data - Statistics


Comparative data - Statistics


Green GRNET activities

GRNET joined the Green GÉANT Team in 2011.GRNET participates to the FP7 ECONET (low Energy COnsumption NETworks) IP project.GRNET participates to the FP7 6DPELOY-2 and GEN6 project

IPv6 as an enabler for energy efficiency in ICT.in a pilot installation, a large number of smart energy meters placed in different geographical areas will be interconnected, creating an IPv6 network of Internet connected objects.

GRNET is planning to install a green data center outdoors in the northwest part of mainland Greece, close to a power-production hydro-electric plant facility.GRNET is taking actions for improving energy efficiency in its data centers.GRNET’s environmental policy is defined in 2011.More at: http://green.grnet.gr


Next steps

To recruit more NRENs in environmental policy and practice, promoting the added value of NRENs, and working with others to meet the targets of carbon neutrality.To collect and disseminate best practices and results to research and academic community.To set targets for efficiency and for use of carbon offsets based on the data available on the reports.To increase the uptake of services which are based on or which generate carbon reduction effects, such as virtualisation, teleworking, videoconferencing etc.To further develop NREN insights and practices on Green IT, so that others may benefit.To “push” NRENs to improve energy efficiency in networking and computational infrastructures.


Thank you for your attention!Questions?

http://green.grnet.grhttps://twitter.com/#!/GreenGRnet

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Baseline studies of an NREN and the whole GÉANT network

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