Solar pSEO Landing

Texas 24V Off-Grid Solar Calculator P2

Profile 2: size battery Ah and panel watts for Texas conditions at 24V using 5.6 peak sun hours and 1-day backup.

Sizing Snapshot

Daily Energy

1807 Wh

Battery Bank

90.9 Ah

Solar Array

440 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
LED Lights (40W x 5h)	40 W	5.00 h	200 Wh

Balanced shoulder-season irradiance and heat-driven load spikes.

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.

Yes, the model applies chemistry-specific assumptions for DoD and charging to keep estimates closer to practical planning ranges.

Use this for planning and shortlist decisions, then validate with measured appliance duty cycles and local irradiance history.

For this load profile, estimated LIFEPO4 bank sizing is 90.9 Ah at 24V with 1-day autonomy.

The calculator estimates 440 W panel capacity after charge and derate factors.