Cost of Solar Panels in Texas 2026: No NEM, Buyback Plans, ERCOT Quirks
Texas solar averages $2.30 per watt installed in 2026: $13,800 for a 6kW system gross, $9,660 net after the 30% federal ITC. Texas pricing runs 18% below the US national average because of cheaper labour and lighter permitting. The complication: Texas has no statewide net-metering policy, so export economics depend on which Retail Electric Provider (REP) you choose. Cost benchmarks from EnergySage Texas marketplace and electricity rate data from EIA Form 826.
Texas Cost by System Size
| System size | Gross cost | Net after 30% ITC | TX annual production* |
|---|---|---|---|
| 5 kW | $11,500 | $8,050 | 7,000 kWh |
| 6 kW | $13,800 | $9,660 | 8,400 kWh |
| 7 kW | $16,100 | $11,270 | 9,800 kWh |
| 8 kW | $18,400 | $12,880 | 11,200 kWh |
| 10 kW | $23,000 | $16,100 | 14,000 kWh |
| 12 kW | $27,600 | $19,320 | 16,800 kWh |
*Annual production based on PVWatts for Houston (5.7 kWh/m²/day insolation), south-facing 25-degree tilt. North Texas (Dallas) is similar; West Texas (El Paso) is 12-15% higher.
The ERCOT and REP Structure
About 75% of Texas electricity customers are in the ERCOT competitive retail market, where you choose a Retail Electric Provider (REP) for generation while the transmission/distribution utility (Oncor in north Texas, CenterPoint in Houston area, AEP Texas, Texas-New Mexico Power) handles the wires. The remaining 25% are in non-competitive areas served by municipal utilities (Austin Energy, CPS San Antonio) or rural co-ops (Pedernales Electric Cooperative, United Cooperative Services, etc.).
In ERCOT competitive territory, there's no PUC-mandated net-metering tariff. Each REP decides whether to offer a "solar buyback" product, and at what rate. As of 2024-2025, the leading solar buyback REPs are Octopus Energy (Tesla Electric program for Powerwall + solar customers), Rhythm Energy, Green Mountain Energy, Reliant, MP2 Energy, and TXU Energy. Plans typically offer net-zero settlement at retail rate within a billing month, with monthly carry-forward of net-export balances at retail (or wholesale, depending on plan).
The wrinkle: the base import rate on a solar buyback plan is often 1.5 to 3 cents per kWh higher than the cheapest non-solar plan in the same market. Net economics depend on your import-export ratio. A heavy net-exporter (large system, low household consumption) wins on a high-export-rate plan. A heavy net-importer (small system, high consumption, lots of evening usage) wins on a low-import-rate plan even if exports credit at wholesale.
Texas Property Tax Exemption
Texas Tax Code Section 11.27 exempts residential solar PV from property tax reassessment. The home's appraised value cannot increase due to solar improvements. On a typical $300,000 Texas home with a 2% effective property tax rate adding $20,000 of solar, the value-added exemption saves about $400/yr in property tax. File Form 50-123 (Residential Property Owners Exemption for Solar or Wind-Powered Energy Devices) with your county appraisal district once the system is installed.
Austin Energy and CPS Energy: Municipal Programs
Austin Energy: $2,500 residential PV rebate plus the Value of Solar (VoS) tariff. VoS pays a per-kWh production credit (around $0.097/kWh in current schedule, updated annually) that is decoupled from retail electricity rate. Net effect: Austin Energy solar customers receive a flat $0.097 per kWh of production via VoS, plus pay full retail rate ($0.10 to $0.13/kWh) for their consumption. The math is roughly equivalent to retail-rate net metering for typical usage profiles.
CPS Energy (San Antonio): $2,500 residential PV rebate plus a Solar Host Program. Net metering at retail rate.
Rural co-ops: Each electric co-op sets its own rules. Pedernales Electric Cooperative (PEC) offers net metering at retail rate up to 100% of historical usage. Other co-ops vary; check your specific co-op's solar policy before sizing.
ERCOT Grid Quirks Solar Installers Don't Mention
ERCOT is the only US grid that's not synchronously interconnected with another grid; it's an electrical island. That has two implications for solar customers:
First, ERCOT cannot import or export power across state lines, so the grid balances entirely within Texas. When solar generation surges midday and demand is low (mild-weather days), wholesale prices can go negative as the grid pays generators to curtail. This is reflected back to retail-side rates only on time-of-use plans, but it's why some REP buyback plans credit at wholesale rather than retail.
Second, ERCOT's energy-only market structure (no capacity payments) means grid reliability depends on extreme-event price signals. February 2021's Winter Storm Uri and subsequent summer grid strain have led to recurring grid-reliability concerns. From a homeowner-decision perspective, this elevates the resilience case for a battery backup substantially. A Tesla Powerwall 3 or Enphase IQ Battery delivers 1-2 days of essential-load backup during outages, which has become a meaningful purchase driver in Texas independent of pure financial NPV.
Frequently Asked Questions
How much do solar panels cost in Texas in 2026?
Installed cost averages $2.30 per watt in Texas, putting a typical 6kW system at $13,800 gross and $9,660 net after the 30% federal ITC. Texas pricing is about 18% below the US national average due to cheaper labour, lighter permitting in most jurisdictions, and a competitive installer market. EnergySage Texas marketplace data shows a $2.10 to $2.65 per watt range.
Does Texas have net metering?
Not statewide. Texas's deregulated competitive retail electricity market (ERCOT region) makes net metering a retail-product feature rather than a regulated tariff. Some Retail Electric Providers (REPs) offer solar buyback plans (Octopus Energy, Rhythm, Green Mountain Energy, Reliant) where exports credit at or near retail rate. Others credit at wholesale rate (or not at all). Municipal utilities (Austin Energy, CPS San Antonio) and co-ops have their own net-metering tariffs which generally do credit at retail or near-retail rates.
What's the property tax exemption?
Texas Tax Code Chapter 11, Subchapter B, Section 11.27 provides an exemption from ad valorem property tax for the added home value attributable to a residential solar PV system. Worth roughly 1.5 to 2% of system cost per year on a typical Texas property tax bill, or $250 to $400/yr on a $20,000 system, totalling $6,000 to $10,000 over 25 years. File Form 50-123 with your county appraisal district.
What's the best REP buyback plan in 2026?
Plans change constantly; check directly with REPs at the time of install. As of recent shopping, Octopus Energy Tesla Electric, Rhythm Solar Buyback, MP2 Energy, and Green Mountain Renewable Rewards have all offered solar buyback at retail rate or near-retail for 12-month contracts. Trade-off: the plan's base rate per kWh may be higher than competitor non-solar plans, so the net economics depend on your import-export balance. Get quotes that reflect your projected production and consumption profile.
Does Austin Energy have its own program?
Yes. Austin Energy is a municipal utility outside ERCOT competitive retail. It offers the Solar Photovoltaic Incentive Program with a rebate of $2,500 for residential PV plus its Value of Solar (VoS) tariff, currently around $0.097 per kWh for production, which is decoupled from retail rate. Austin's economics differ meaningfully from the rest of Texas because of these factors. CPS Energy in San Antonio has a similar municipal-utility program with $2,500 rebate.
What's the payback on Texas solar without battery?
Nine to twelve years for a typical 6 to 8kW install. Drivers: relatively low retail electricity rates ($0.13 to $0.16/kWh ERCOT average), no statewide net-metering policy floor, but cheap install cost partially offsets. Faster payback in areas with strong REP buyback plans (Dallas-Fort Worth, Houston) than in areas where REP plans credit at wholesale (some rural co-op territories).
Should I add a battery in Texas?
Battery economics are weaker in Texas than in California because Texas REP buyback plans for solar are often near-retail-rate. But after February 2021 (Winter Storm Uri / Snowpocalypse) and recurring summer grid strain in ERCOT, the resilience case for batteries has become much stronger. Tesla Powerwall 3 installed adds $11,500 ($8,050 net after ITC). Pure-financial payback in TX: 12 to 18 years; resilience value standalone: substantial. Many Texas homeowners buy batteries primarily for backup power, not financial NPV.