APC 400kW1MW User Manual download pdf (Page 51)

However, retaining walls may not be necessary with the low noise levels of fuel

cell systems. In fact, the EPC recommends fuel cells for power generation in

order to obtain these points [72].

 Sustainable Sites Credit 5.5: Site Development, Air Quality and Emissions Impact

This credit is also new to the NC Version 2.2 rating system. In order to reduce

emissions and the negative impact on air quality, the EPC recommends installing

a fuel cell power system. In order to receive a point for this credit, calculations

for NO

and CO emissions must be submitted and be a minimum of 10% better

than the local code requirement. It must also be shown that the emissions meet

or exceed the EPA Tier 2 standards [72].

 Energy & Atmosphere Credit 2: Optimize Energy Performance

This credit is a modification of the Energy & Atmosphere Credit 1: Optimize

Energy Performance in the LEED NC Version 2.2 rating system. The range of

points available for this credit is 10 to 34 points. These points correlate with an

energy performance improvement over ASHRAE/IESNA Standard 90.1-2007 of

5% to 17.5% and 2% to 14% for new and existing buildings, respectively. The

draft states that since data centers can be 10 to 100 times as energy intensive as

an office building, it can be very difficult and expensive to reach the percentage

thresholds for commercial buildings as required by the NC Version 2.2 rating

system. Therefore, the EPC has decreased the thresholds and increased the

amount of points attainable [72].

 Energy & Atmosphere Credit 4: On-Site Generation

This is another new credit added by the EPC Guide for Data Centers. This credit

encourages the use of on-site power generation in order to “reduce the

environmental and economic impacts associated with fossil fuel energy use and

transmission losses from utility power plants” [72]. The EPC also recommends

applying fuel cells for this credit. Up to three points are available for this credit,

depending on a percentage of improvement over ASHRAE/IESNA Standard

90.1-2007 in annual source energy [72].

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APC 400kW1MW User Manual Page 51