Nighttime & Off-Grid Storage

Solar Battery Size Calculator

Determine battery kWh capacity needed to capture daily solar generation and carry your home through dark hours or multi-day storms.

Solar Storage Demand

Specify nighttime load percentage, autonomy days, and battery chemistry.

Nighttime Energy Usage (kWh)

Days of Autonomy (No Sun)

Battery Bank Voltage

Battery Storage Type

Required Solar Battery Bank

29.6 kWh

Usable + Safety Reserve

Capacity in Amp-Hours: 617 Ah @ 48V

Total Night Energy Needed: 24 kWh (2-day reserve)

5kWh Rack Battery Modules: 6 Modules (48V 100Ah)