Frequently Asked Questions

How accurate is the cost estimate?

The cost estimate is a rough baseline for 2026, assuming $1.20/watt for panels and $4/Ah for lithium batteries, plus a flat $500 for wiring and a basic inverter. Actual costs vary by brand.

What does "Inverter Efficiency" mean?

When converting 12V DC battery power to 120V AC power for household appliances, some energy is lost as heat. Most modern inverters are 85% to 90% efficient.

Can I run an AC unit on solar?

Yes, but it requires a massive battery bank (typically 600Ah+ lithium) and 1000W+ of solar panels, plus a soft-start device for the AC.