1 Chain analysis datacenters and hospitals update Q Deerns Nederland BV Rijswijk, HOME PAGE: PROJECT NUMBER ONL MVO STATUS Version 0.1 H:\PRJ\100\00037-MVO\00\0001-CSR\Rapport\CO2-Prestatieladder\Chain analysis\dri CSR DOCUMENT CODE CO2-PL ketenanalyse datacenters en ziekenhuizen V0.5.docx AUTHOR Ir. J. van Dorp INITIALS PROJECT LEADER MANAGER/GROUP M. Schellekens INITIALS All rights reserved. No part of this publication may be reproduced and/or published by means of print, photocopy, microfilm or in any other way without the advance written permission of the client. If this report has been commissioned, see the DNR 2005 or particular contract concluded between the parties in relation to this for the rights and obligations of the client and contractor.
2 2 Contents 1. INTRODUCTION SCOPE 3 CHAIN ANALYSIS Datacenters Targets Information supplied Assumptions Results + findings Hospitals Targets Information supplied VERIFICATION Validation of source data and outcomes - datacentres REFLECTION Quality of source data and insight - datacenters Forecast for realising the targets - datacenters PROPOSALS FOR IMPROVEMENT Reformulation of target - datacenters... 7
3 3 1. INTRODUCTION In order to qualify for maintenance of the CO2-prestatieladder certificate, a regular update of progress on achieving co2 reduction targets at datacenters and hospitals is undertaken. This report provides information on this progress.
4 4 2. SCOPE 3 CHAIN ANALYSIS 2.1. Datacenters Datacentre can be characterised by their PUE, or power usage efficiency. As the PUE approaches unity, the energy use for auxiliary systems is reduced and the overall efficiency of the datacentre improves. Datacenters with a low PUE have lower associated co2 emissions Targets A quantitative target is difficult to define for this sector, because the design of efficient datacenters rests on many individual technical solutions and their integration, and the resulting efficiency of a datacenter is largely dependent on the ambition (and available budget) of the owner. However, a quantitative target was defined, as follows. - Deerns will endeavor to realize an EUE of <1,2 for all its datacenter projects. - Deerns will try to convince all its datacenter clients to procure co2-free energy if possible, or otherwise to compensate by purchasing renewable energy certificates. - Deerns will try to convince all its datacenter clients to install Sustainable solar PV installations on the roofs of their datacenters. Sustainable solar PV installations are PV installations having an EROI (Energy returned on energy invested) of at least 10. Information regarding Deerns datacenter projects will be published Information supplied Project Site power rating PUE PV Bist Datacenter Istanbul Stock Exchange 800 kw PUE 1,3 nee Bist Datacenter Istanbul Stock Exchange 6,0 MW PUE 1,3 nee Global Switch 1,1 MW PUE 1,3 nee Moskou Energy Company 750 kw PUE 1,2 nee Buckingham 32 MW PUE 1,1 nee Assumptions No assumptions are necessary Results + findings The results show that the PUE target of 1,2 or better was only achieved at two datacentre projects. The average PUE on a per project basis was 1,24. The average PUE weighted for project installed electric capacity was 1,14. A PV installation was not installed at any of the projects.
5 5 It is not clear whether Deerns has advised the datacenters to install PV panels, as this was not monitored Hospitals Hospitals are significant users of energy, including energy for powering indoor climate control. Deerns has a lot of experience in designing climate control systems which make use of ATES (Aquifer Thermal Energy Storage). In most of Deerns hospital projects, ATES technology is implemented. Because hospitals generally have year-round demand for cooling and heating, the economics of using ATES are generally favourable Targets Deerns does around three hospital projects per year, including both new-build and renovation. Deerns target is to include ATES in every hospital project, unless the local geology precludes the application of ATES Information supplied Information has not been retrieved.
6 6 3. VERIFICATION 3.1. Validation of source data and outcomes - datacentres The data has been collected and verified through the manager in charge of datacentre projects. The data pertaining to whether or not Deerns has advised the installation of PV technology at the datacenters was not available. 4. REFLECTION 4.1. Quality of source data and insight - datacenters The information regarding whether PV installations were advised by Deerns was not available at the time this update report was written. This information will be sought and added in a future update report Forecast for realising the targets - datacenters The achievement of a PUE of 1,2 was not reached in all projects, but the weighted average PUE across projects was lower than 1,2. In relation to the objectives, this counts as a partial achievement. In future datacentre projects, achievement of a PUE of <1,2 will continue to be the target. There is high confidence that this target will be met. Concerning the target of using waste heat, there is medium confidence. There is enthousiasm among datacentre owners to do more with waste heat, but the logistics and cost issues pose a challenge. Succes in reaching this target will depend on the availability of funds, either from owners of datacenters or through subsidies.
7 7 5. PROPOSALS FOR IMPROVEMENT 5.1. Reformulation of target - datacenters The application of PV technology at datacenters is found to be relatively difficult. Installing PV introduces risks in relation to fire protection and power quality, which are critical factors especially for datacentres. To mitigate these risks by adding power electronics and fire safety precautions, additional costs are incurred which further undermine the already poor economics of rooftop solar PV on energy intensive buildings which pay relatively low rates per kwh of electricity usage. In relation to the aforementioned issues, the target of increasing PV deployment at datacenters will be dropped. Instead, a new target will be formulated in support of using waste heat from datacentre operations. The waste heat could be used to supply heat for space heating, in combination with a heat pump. The new target will be that Deerns advises at least one new datacentre project which includes the capability to supply waste heat to third parties.
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