OpenBESS Tool

BESS Sizing Made Simple

Free engineering calculator for Battery Energy Storage System sizing. Estimate battery capacity, power requirements and basic system parameters for energy storage projects.

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Applications

Peak Shaving

Estimate battery size required to reduce demand peaks and minimize demand charges.

Backup Power

Calculate battery capacity required to support critical loads during outages.

Solar + Storage

Evaluate battery sizing for photovoltaic self-consumption optimization.

Microgrid Support

Preliminary sizing for battery systems used in microgrids and hybrid systems.

Why OpenBESS Tool?

Engineering Based

Calculations based on practical engineering assumptions used in real BESS projects.

Free to Use

No registration required. Quick preliminary sizing for engineers and integrators.

Fast Results

Get battery capacity and power estimates in seconds.

Start Sizing Your BESS Project

Use the free calculator to estimate battery system capacity.

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