Is Solar Worth It? How to Actually Run the Numbers

Solar salespeople love round numbers. Here's how to calculate your real savings potential before you talk to anyone.

Start with your actual electric bill

Your current monthly and annual electric spend is the single biggest factor in whether solar makes financial sense for you.

Factor in your roof's sun exposure

A south-facing roof with little shading generates significantly more power than a heavily shaded or poorly angled one — this affects your real payback period.

Understand the federal tax credit

The federal solar tax credit reduces your effective system cost by a meaningful percentage, shortening your payback period substantially.

Check your state and utility's net metering rules

How much credit you get for excess power varies widely by location — this can make an identical system pay back years faster or slower depending on where you live.

Get a real site assessment

Online calculators, including ours, give you a useful starting range. A local installer's in-person assessment accounts for your specific roof, shading, and usage for a precise number.