Solar System Sizing Tool

Estimate the solar array size you need based on your annual electricity consumption.

Backed by EIA data~2 min

Your Inputs

Monthly kWh Usage

Check your electric bill. US average: ~900 kWh/month.

State (optional)

Adjusts for regional climate and sun exposure.

Tip: Your inputs are saved automatically. Reload the page to restore them.

Save this scenario

Saved locally (demo). Appears in your account dashboard.

Base Estimate (US Average)

12.00kW

Assumes 4.5–5.5 peak sun hours/day and typical system losses.

Annual consumption: 12,000 kWh

Next step

Estimate Costs

Get a rough cost estimate for your system size.

Calculate ROI

Estimate payback and savings with your system size.

Check Your Quote

See if your installer quote is competitive for your state.

Learn about system types, installation, and what to expect from solar.

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Track your home energy usage in real-time. Sense uses machine learning to identify individual devices and find savings opportunities.

USAPOWR may earn a commission on purchases. Prices and availability may vary.

Affordable whole-home energy monitoring with circuit-level tracking. See exactly where your electricity goes.

USAPOWR may earn a commission. Requires compatible electrical panel.

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