BESS Capacity & Lifecycle Planner

Size a battery energy storage project, project end-of-life degradation, and calculate the overbuild and cabinet count you need — in one clean report.

Project inputs

Enter the project details and OEM parameters below.

Input unit

MW kW

Core project inputs

Core sizing inputs used to define the required battery duty.

Project name

Target POI power (MW)

Energy capacity (MWh)

Discharge duration (hours) Auto-calculated: capacity ÷ power

Expected project life (years)

Charge/discharge cycles per day

Ambient temperature (°C)

C-rate Auto-calculated: 1 ÷ duration

Battery performance parameters

Manufacturer performance assumptions used to evaluate degradation and overbuild.

Battery chemistry

Round-trip efficiency (%)

Allowed depth of discharge (%)

Manufacturer cycle life

Manufacturer EOL SOH (%)

Beginning-of-life SOH (%)

Calendar degradation / year (%)

Cabinet configuration

System losses assumptions

Standard losses considered. Expand only if you want to review or update them.

PCS losses, one-way (%)

Auxiliary power (%)

Transformer losses, one-way (%)

Additional losses, one-way (%)

Calculated output

Review the BESS sizing summary and export the report.

Please fill all input fields and click Calculate to view the output.

This calculator gives indicative results only. Verify against the applicable standard and have designs checked by a competent engineer before installation.

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