Efficiency Upgrade ROI Calculator

Evaluate the financial return of PUE efficiency upgrades with annual savings, payback period, and 5-year NPV.

Current Power Usage Effectiveness of your facility.
Expected PUE after efficiency improvements. Must be lower than current.
Total IT equipment power draw.
kW
Blended electricity rate including demand charges.
$/kWh
Total capital cost of the efficiency upgrade project.
$
Annual discount rate for net present value calculation. Typical corporate rate: 8-12%.
%

Results

Current Annual Power Cost:
At current PUE.
-
Target Annual Power Cost:
At target PUE.
-
Annual Energy Savings:-MWh
Annual Cost Savings:
Recurring annual savings from reduced power.
-
Simple Payback Period:
Upgrade cost / annual savings.
-years
5-Year Net Savings (undiscounted):
5 years of savings minus upgrade cost.
-
5-Year NPV:
Net Present Value of 5 years of savings minus upgrade cost.
-
ROI (5-Year):
(5-year net savings / upgrade cost) x 100.
-%
CO2 Reduction (at 0.39 kg/kWh):
Annual CO2 reduction from lower energy use.
-tonnes/year
Reference: US DOE Data Center Energy Efficiency guidelines. NPV = sum of discounted annual savings minus initial investment. Simple payback = investment / annual savings.