Energy storage planning demo

Battery Sizing Calculator

Estimate a practical battery bank and solar charging requirement from appliance loads, autonomy, chemistry, voltage, efficiency, and temperature assumptions.

Build a load scenario

Live workbook model

Size storage from the loads that matter

Start with the published example, edit the appliance audit or system assumptions, and the server-pinned workbook recalculates the bank.

Battery system

Choose the battery technology, module, system voltage, and storage assumptions.

Battery chemistry

Battery module

System voltage

Custom module voltageV

Custom module capacityAh

Days of autonomydays

Depth of discharge overridefraction

Inverter efficiencyfraction

Round-trip efficiency overridefraction

Minimum battery temperature°C

Charging assumptions

Connect the storage estimate to a preliminary solar charging requirement.

Peak sun hoursh/day

Charge path efficiencyfraction

PV array deratefraction

Appliance load audit

Enter one appliance type per row. Unused rows stay at zero.

Appliance	Power W	Hours/day	Quantity	Energy Wh/day
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Total				—

Workbook results

Battery bank recommendation

Validated model outputs update after each complete input change.

Workbook model —

Required nominal energy—kWh

Total batteries—modules

Achieved autonomy—days

Recommended PV array—W

View all workbook results

Result	Value	Unit
Connecting to the live workbook…

A focused planning model

What the workbook combines

Load auditPower, operating hours, and quantity for each appliance group.
Storage assumptionsChemistry, voltage, autonomy, efficiency, and temperature.
Charging contextPeak sun hours, path efficiency, and PV derating.

Size storage from the loads that matter

What the workbook combines

Convert My Excel Model to a Web App