Plug-In Solar Savings Calculator by ZIP Code

See how much you could save on electricity bills and store for backup power with a ZIP-based estimate using EIA utility-rate data.

What Does This Estimate Include?

The estimate includes system size, storage, state rate, solar resource, and optional time-of-use settings. It is educational; review the assumptions and state and utility requirements.

How the Calculator Works

• Enter your zip code to auto-detect your state and electricity rate
• Choose your system size (400W, 800W, 1,200W, or custom)
• See estimated annual savings, payback period, and 10-year ROI
• Compare with and without battery storage
• Factor in TOU (time-of-use) rate optimization

Data Sources

Calculator inputs use state electricity-rate and solar-resource assumptions. Review the calculator methodology and the state-specific requirements that may apply before acting on an estimate.

Turn an Estimate into a Decision

• Check your setup readiness for placement, outlet, property, and connection conditions.
• Size optional battery storage for your backup or load-shifting goal.
• Compare system specifications after you understand the setup and savings assumptions.
• Review Plug-In Solar 101 for the complete consumer decision path.