Net Zero Building Calculator

Analyze whether your building can achieve net-zero energy status by comparing annual consumption against on-site renewable generation.

Floor Area (sq ft)

Energy Use Intensity (kBtu/ft²/yr)

Solar PV Capacity (kW DC)

Peak Sun Hours / Day

System Efficiency (%)

Other Renewable (kBtu/yr)

Electricity Cost ($/kWh)

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Annual Consumption (kWh)

26,377

Annual Generation (kWh)11,300

Net Energy (kWh)-15,077

Renewable Offset (%)42.84%

Additional Solar Needed (kW)13.34

Annual Energy Cost ($)$3,429.07

Annual Savings ($)$1,469.05

Is Net ZeroNo

How to Use This Calculator

Enter the Floor Area in sq ft and Energy Use Intensity (EUI) in kBtu/ft²/yr.
Enter Solar PV Capacity in kW DC and average Peak Sun Hours per day for your location.
Enter System Efficiency percentage and any Other Renewable energy in kBtu/yr.
Review Annual Consumption vs Annual Generation and Renewable Offset percentage.
Check Net Energy balance and Additional Solar Needed to reach net-zero if there is a generation shortfall.

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