Solar pSEO Landing

California 48V Off-Grid Solar Calculator P1

Profile 1: size battery Ah and panel watts for California conditions at 48V using 5.4 peak sun hours and 1-day backup.

Sizing Snapshot

Daily Energy

1607 Wh

Battery Bank

40.4 Ah

Solar Array

406 W

Inverter Baseline

1250 W

Appliance	Power	Daily Runtime	Wh/Day
Fridge (60W x 24h)	60 W	24.00 h	1440 Wh
Microwave (1000W x 10m)	1000 W	0.17 h	167 Wh

Strong annual sun profile with stable planning assumptions.

Use local monthly irradiance data to tune peak-sun-hour assumptions before procurement.

Cloud-prone months usually benefit from higher autonomy targets and larger reserve buffers.

For winter-heavy climates, panel overbuild is often cheaper than repeated battery deep cycles.

For this load profile, estimated LIFEPO4 bank sizing is 40.4 Ah at 48V with 1-day autonomy.

The calculator estimates 406 W panel capacity after charge and derate factors.

For the same energy demand, lower voltage systems need more current. That translates into larger Ah requirements and often thicker cabling.

In low-sun conditions, panel oversizing usually improves daily recovery. In high-cloud windows, additional battery autonomy reduces outage risk.