Praevoium
Praevoium Reference Calculators

Battery Cost Normalization

Site Explanation: Battery Cost Normalization Battery cost can refer to materials, cells, modules, racks, containers, DC blocks, AC systems, installed equipment, EPC contracts, total project cost, net cost after incentives, or lifecycle cost. A single $/kWh value is not comparable until scope is defined. Power in MW and energy in MWh should remain separate. Duration equals usable energy divided by rated power. Cost per kW emphasizes power equipment, while cost per kWh emphasizes stored energy. Lo

Interpretation rule: Results are derived estimates. They are not reported facts unless the inputs themselves come from directly reported, scope-matched evidence.

Rated Duration

mwh/mw
Derived result
—

Use the same AC or DC boundary for both inputs.

Cost per kW

cost/(mw*1000)
Derived result
—

State whether cost is equipment-only, EPC, total project, or net cost.

Cost per Usable AC kWh

cost/(mwh*1000)
Derived result
—

Do not substitute gross nameplate energy for usable AC energy.

Usable-Energy Ratio

usable/gross*100
Derived result
—

Identify beginning-of-life, guaranteed, or demonstrated usable energy.

Round-Trip Efficiency

out/inenergy*100
Derived result
—

State whether values are measured at DC terminals or the grid interconnection.

Required Beginning-of-Life Capacity

guaranteed/(retention/100)
Derived result
—

Supports degradation and augmentation planning.

Net Project Cost

gross-tax-grants-rebates
Derived result
—

Use monetized incentive value, not only nominal credit percentage.

Simplified LCOS

costs/energy
Derived result
—

Requires a consistent discount rate, operating life, cycle profile, degradation, and charging-cost treatment.