Data Center PUE and Cooling Overhead
Computes total facility load, PUE, DCiE, overhead, annual energy cost, target-PUE savings.
Example
You enter
- IT equipment load (kW) 500
- Cooling, pumps, and fans (kW) 210
- UPS and distribution losses (kW) 35
- Lighting and building services (kW) 15
- Electricity tariff ($/kWh) 0.1
- Target PUE 1.3
- Reduced-case IT load (kW) 400
- Reduced-case cooling load (kW) 175
- Reduced-case UPS losses (kW) 30
You get
- PUE / DCiE 1.520 / 65.8 %
- Dcie (%) 65.7895
- Annual facility cost $665,760
- Target annual savings 96360
- Reduced IT-load case 1.55
- Reduced annual savings 122640
Checked against published worked examples from: The Green Grid.
Details, formula, and sources
ScopeComputes total facility load, PUE, DCiE, overhead, annual energy cost, target-PUE savings, and the ratio trap when useful IT load falls faster than fixed overhead. The worked hall saves $122,640 per year while PUE worsens from 1.52 to 1.55. Annual metering and the site's measurement boundary govern.
Formula or tabletotal facility kW = IT + cooling + UPS loss + miscellaneous; PUE = total/IT; DCiE = IT/total; annual energy = total x 8,760.
Source and editionThe Green Grid PUE/DCiE definitions and ASHRAE data-center energy guidance. The site's declared metering boundary and measurement category govern.
Free accessAn energy ratio and component sum; The Green Grid publishes the PUE definition publicly.
What governsEstimate. AHJ and licensed professional govern.
API field namesit_load_kw, cooling_kw, ups_loss_kw, miscellaneous_kw, tariff_per_kwh, target_pue, reduced_it_kw, reduced_cooling_kw, reduced_ups_loss_kw, pue, dcie_pct, annual_cost, target_annual_savings, reduced_pue, reduced_annual_savings
- Measurement boundary all entered components use the same facility boundary and averaging periodThe Green Grid / site metering plan
- Annualization 8,760 hours at the entered average loadsplanning estimate