The asset lasts decades, the contract lasts months
Texas has no statewide net-metering mandate. In deregulated areas your compensation for exported solar is a term of the retail plan you selected, and that plan has an end date, typically somewhere between one and three years out.
Your panels do not have an end date in the same sense. So over the life of the system you will renew or re-shop your plan many times, and each of those moments is a moment when your export terms can change.
That is not a reason to avoid solar. It is a reason to treat a twenty-five year savings projection as a forecast rather than a promise, and to ask what assumptions sit behind the years after your current contract ends.
Ask any installer directly: what export rate does this projection assume for year four onwards, and what happens to the payback if that rate halves. An installer who has thought seriously about the Texas market will have an answer. One who has not will treat the question as unusual, which is itself informative.
Build a renewal habit before you need one
Because your export credit lives in a contract that expires, the single most valuable habit for a Texas solar owner is diarising the plan end date and shopping before it arrives rather than after.
Plans that roll over automatically at the end of a term are rarely the best available, and a household that has stopped paying attention can spend years on terms nobody would have chosen deliberately. That is true for any Texas household, and it costs a solar owner more because the export terms move too.
PowerToChoose.org is the state-run comparison site and it is the right place to check what is available at your address without a sales conversation attached. Set a calendar reminder for two months before your plan ends and use it.
When you compare, look at the export terms and the energy rate together, and check whether credit accumulation is capped. Some plans credit exports without a cap and roll credits over, and some cap what can accumulate, after which further exported generation earns nothing.
The parts of the return that do not depend on a contract
Some of the value of a solar system does not depend on any retail plan, and it is worth separating those parts out when you evaluate a project.
Electricity you consume as it is generated avoids a purchase entirely, so it is worth the plan energy rate rather than the export rate. That value survives every plan change you will ever make, which makes the self-consumed share the sturdiest part of the return.
So ask your installer to model the self-consumed share explicitly, and to show what the system is worth on that basis alone, before any export credit is added. That is your floor, and a project that only works on optimistic export assumptions is a more fragile purchase than it looks.
Raising the self-consumed share costs nothing. Running the dishwasher, laundry and any vehicle charging in daylight hours shifts consumption into the production window, and unlike equipment decisions you can change it any time.
The exemption you have to claim, and the credit that ended
Texas Tax Code Section 11.27 exempts 100 percent of the appraised home value added by an installed solar energy device from property tax. It is not automatic. Form 50-123 must be filed with your county appraisal district, and the deadline for the current tax year is generally April 30.
Ask whether your installer assists with the filing, and put the deadline in your own calendar regardless. An exemption you qualified for and never claimed is the most avoidable cost in a Texas solar project, and unlike the rest of the arithmetic it is entirely within your control.
The federal position has changed and a great deal of published material has not caught up. The 30 percent Residential Clean Energy Credit under Section 25D expired for property placed in service after December 31, 2025, so a cash or loan purchase now does not receive it. A quote that still applies it is overstating your return substantially.
Section 48E survives at 30 percent for third-party owners under leases and power purchase agreements, so such a provider may claim it and reflect part of that value in the rate they offer. What they claim and what actually reaches you are separate questions, so ask both and confirm with a tax advisor rather than with the sales material.