Solar Payback Period in Corpus Christi, Texas: When Does It Pay Off?

When Does Solar Pay Off in Corpus Christi?

A 7kW system in Corpus Christi costs approximately $21,000 at $3/watt. With annual savings of $1,332 (based on AEP Texas's 11.5¢/13.5¢ rate tiers), the break-even point is approximately 15.8 years.

Without Solar: Projected AEP Texas Bills

AEP Texas rates have increased 19% (2014-2024). If that trend continues, the average Corpus Christi bill looks like this:

Projections use the 19% (2014-2024) 10-year CAGR as a straight-line estimate. Actual rate changes vary. Solar bill estimates assume fixed system output.

The Compounding Advantage

The payback period calculation above uses today's rates. In reality, as AEP Texas rates rise each year, your solar savings grow too — because every kWh your panels produce is worth more. This means the effective payback period is typically shorter than the static calculation suggests, and the 25-year savings figure grows significantly with each rate increase.