Solar Panels in Texas: What to Know Before You Buy

Texas Is Great for Solar, but the Details Matter

Texas gets an enormous amount of sunshine. Most parts of the state see 220-250 sunny days per year, which puts it among the top states for solar energy production. An 8 kW rooftop system in Dallas, Houston, or San Antonio typically generates 11,000-13,000 kWh per year, enough to cover most of a household’s electricity needs.

But good sunshine alone does not make solar a smart investment. The financial picture depends on installation costs, the buyback rate you can get for excess power, and how long you plan to stay in your home.

What Solar Actually Costs

The average residential solar installation in Texas runs $2.50-$3.00 per watt. For a typical 8 kW system, that comes to $20,000-$24,000 before incentives.

The federal Investment Tax Credit (ITC) currently covers 30% of the total installation cost. That drops an $22,000 system down to about $15,400 out of pocket. This credit applies to your federal income taxes, so you need enough tax liability to claim it, though you can carry unused credits forward.

Texas has no state income tax, which means there is no state solar tax credit. However, solar panels are exempt from property tax increases in Texas, so your home value goes up but your property taxes do not.

The Buyback Rate Problem

Here is where Texas gets complicated. Unlike states with mandatory net metering, Texas has no statewide requirement for providers to buy back your excess solar electricity at retail rates.

Instead, some providers offer solar buyback plans. The buyback rates range from 4-5 cents per kWh on the low end to near retail rates on the high end. The difference between a 5 cent buyback and a 12 cent buyback is enormous when it comes to your payback period.

Before you install solar, shop for a provider with a competitive buyback plan. This is just as important as the solar installation itself. A great buyback rate can shorten your payback by 2-3 years.

Realistic Payback Timeline

With an 8 kW system producing 12,000 kWh per year and an average buyback rate of 8-10 cents per kWh, most Texas homeowners see a payback period of 8-12 years. After that, the electricity your panels produce is essentially free for the remaining 15-20 years of their lifespan.

Panels degrade slowly over time, losing about 0.5% efficiency per year. A panel producing 400 watts today will still produce about 350 watts in 25 years. Most manufacturers guarantee at least 80% output at 25 years.

Battery Storage: Worth It Yet?

Home battery systems like the Tesla Powerwall cost $10,000-$15,000 installed. They store excess solar energy for use at night or during outages.

For most Texas homeowners, batteries do not make financial sense yet. The payback period is 15-20 years, which is close to the battery’s expected lifespan. However, if you experience frequent power outages or want energy independence, the peace of mind may be worth the cost.

Battery prices are dropping about 10% per year. If you install solar now, you can always add a battery later when the economics improve.

Buy vs Lease

Buying your solar system, either outright or through a solar loan, gives you the best long-term return. You own the equipment, claim the federal tax credit, and keep all the savings.

Leasing or a power purchase agreement (PPA) requires no upfront cost. You pay a monthly fee to the solar company, which is typically lower than your electricity bill would be. But the savings are smaller because the solar company keeps the tax credit and profits from the arrangement.

If you plan to stay in your home for 10 or more years, buying is almost always the better deal. If you might move within 5 years, a lease is simpler because buying out or transferring a owned system can complicate a home sale.

The Bottom Line

Solar makes financial sense for many Texas homeowners, especially those with high electricity bills, south-facing roofs with minimal shade, and plans to stay in their home long-term. But it is not a slam dunk for everyone. Run the numbers with your specific electricity rates, your roof’s solar potential, and the best buyback plan you can find before committing.