Disclaimer

Estimates, not designs

9DC calculators use simplified, published assumptions. Real charging curves vary by vehicle, software and temperature; solar output varies with shading, tilt, soiling and weather; battery performance varies with chemistry, age and temperature; cable ampacity varies with insulation, bundling and ambient conditions. Always verify with manufacturer specifications and a qualified professional.

Safety

Direct current at battery and PV-string levels can cause fires, burns and fatal shock. Lithium batteries can deliver very high fault currents. Follow your local electrical code and use licensed professionals where required.

Financial figures

Costs, savings, incentives and electricity prices change frequently and differ by location. Payback figures are illustrative and are not financial advice.

Advertising and referrals

9DC displays ads served by Google AdSense and may receive compensation for sponsorships or for connecting quote requests with providers. This never changes calculator results. Sponsored content is labelled.

Accuracy

We work to keep content accurate and current but cannot guarantee it. Report an error.