Solar Panel Calculator for Texas
Texas gets abundant sunshine, carries above-average electricity costs, and offers a valuable property tax exemption for solar — making it one of the best states in the country to go solar. Use this free calculator to estimate your system size, total cost, and payback period based on your actual bill.
Estimate Your Solar Savings in Texas
The calculator below is pre-loaded with Texas's average electricity rate and sun hours. Enter your monthly bill to get a personalized estimate of system size, total cost, and payback period for your home. No signup required.
5.2 hrs
Sun Hours/Day
$0.135
Rate ($/kWh)
$2.55
Avg Cost/Watt
Solar Panel Cost in Texas (2025)
In 2025, a fully installed residential solar system in Texas — panels, inverter, mounting hardware, wiring, and labor — typically costs $2.35–$2.75 per watt, with a state average around $2.55/W (LBNL Tracking the Sun). After the 30% federal ITC, most systems are significantly more affordable than the sticker price suggests.
| System Size | Gross Cost | After 30% ITC | Suited For |
|---|---|---|---|
| 5 kW | $13,000–$15,000 | $9,100–$10,500 | Small home / low bill |
| 8 kW | $19,000–$22,000 | $13,300–$15,400 | Average TX home |
| 10 kW | $23,000–$27,000 | $16,100–$18,900 | Larger home / EV |
| 12 kW | $27,000–$32,000 | $18,900–$22,400 | High-usage home / pool |
5.2
Peak Sun Hrs/Day
$0.135
Avg Rate ($/kWh)
$2.55/W
Avg Install Cost
8.5 yrs
Est. Payback (w/ ITC)
Why Solar Makes Sense in Texas
Texas ranks among the top states in the US for solar potential. Most of the state averages 5.2 peak sun hours per day — with West Texas exceeding 6 hours/day — putting it well ahead of northern and Midwest states. That solar resource translates directly into more kilowatt-hours generated per panel and a smaller system needed to offset your electricity bill.
Electricity costs in Texas average $0.1352/kWh, and the typical Texas household pays around $161/month. The state's deregulated ERCOT grid, while offering competitive retail rates, also exposed its vulnerabilities during the February 2021 winter storm — a wake-up call that drove a surge in demand for solar-plus-battery systems that can operate independently when the grid goes down. For many Texans, energy independence is now as important a motivation as saving money.
On the incentive side, Texas homeowners benefit from the 30% federal Investment Tax Credit (ITC) on the full installed cost, plus a 100% property tax exemption on the value solar adds to their home under Texas Tax Code §11.27. There is no state income tax in Texas, so there is no state-level solar income tax credit — but the federal ITC and property tax exemption together make the financial case compelling. Net metering is available from many Texas utilities, though buyback rates vary by provider in the deregulated ERCOT market.
How the Texas Solar Calculator Works
Our solar panel calculator for Texas uses real data from NREL PVWatts, EIA residential electricity rates, and LBNL Tracking the Sun to produce accurate estimates in seconds. Here's what happens when you enter your monthly bill:
- Monthly bill → kWh usage:Your bill is divided by Texas's average electricity rate ($0.1352/kWh) to estimate your monthly energy consumption.
- kWh usage → system size:Your annual kWh usage is divided by Texas's average solar production factor (5.2 peak sun hours × 365 days × 80% efficiency) to size your system in kilowatts.
- System size → installed cost:The system size is multiplied by Texas's average cost per watt ($2.55/W) to estimate total gross cost before incentives.
- Cost → payback period: After applying the 30% federal ITC, the net cost is divided by your estimated annual electricity savings to calculate how many years until the system pays for itself.
Texas Solar Incentives (2025)
Texas doesn't have a state income tax credit, but the available incentives still significantly reduce the net cost of going solar:
✅ Federal Investment Tax Credit (ITC) — 30%
The federal ITC allows you to deduct 30% of your total solar installation costfrom your federal income taxes. On a $20,000 system, that's a $6,000 tax credit. The full 30% ITC is available through 2032, then steps down to 26% in 2033 and 22% in 2034. You must own (not lease) your system and have sufficient federal tax liability to claim it — unused credit can carry forward to future tax years.
🏠 Texas Property Tax Exemption for Solar (§11.27)
Under Texas Tax Code §11.27, the added value of a solar energy system is 100% exempt from property tax assessment. If solar adds $20,000 to your home's market value, your property taxes don't increase. With Texas property tax rates averaging 1.6–2.0%, this exemption saves the typical homeowner $320–$400 per year — a benefit that compounds over the life of the system.
⚡ Net Metering in Texas (Varies by Provider)
Texas's deregulated ERCOT market means net metering policies vary by retail electric provider (REP). Some providers offer full retail-rate credits for excess solar energy sent to the grid; others pay near-wholesale rates ($0.04–$0.08/kWh). Municipal utilities and co-ops outside ERCOT (e.g., Austin Energy, CPS Energy in San Antonio) often have favorable net metering programs with retail-rate or tiered credits. Always review your specific provider's solar buyback terms before sizing your system.
🌟 Local Utility Rebates
Some Texas utilities offer additional solar incentives. Austin Energy's Value of Solar Tariff (VOST) provides a transparent per-kWh credit for exported solar. CPS Energy in San Antonio has offered rebates in the past. Oncor (the main transmission provider for much of North Texas) and AEP Texas do not offer their own solar rebates, but many REPs serving those territories have solar buyback plans. Check DSIRE for the latest local utility programs in your area.
How Much Can You Save with Solar in Texas?
Texas's average monthly electricity bill of $161/month — driven by hot summers, electric cooling loads, and increasingly, electric vehicle charging — means solar delivers meaningful annual savings.
$1650–$2200
Estimated Annual Savings
8.5–10 yrs
Payback Period (after ITC)
$48,300+
25-Year Lifetime Savings
How these numbers are calculated: Based on Texas's average monthly bill of $161, electricity rate of $0.1352/kWh, 5.2 peak sun hours/day, and an install cost of $2.55/W. A 9.4 kW system is needed to fully offset the average Texas home. Annual savings assume 100% solar offset of your bill. Payback is after the 30% federal ITC. Actual results vary by roof, shading, utility, and usage.
Texas-Specific Solar Considerations
Texas's size, climate, and unique grid structure create solar installation factors that differ from other states:
☀️ Regional Sun Variation
Sun hours vary significantly across Texas: West Texas (El Paso, Midland, Odessa) gets 6.0–6.5 peak sun hours/day, while East Texas and the Gulf Coast average closer to 4.8–5.2 hours/day. The statewide average is5.2hours/day. The calculator uses this average, but your actual production will be higher if you're in West Texas and slightly lower along the coast.
🌡️ Heat and Panel Efficiency
Texas summers routinely hit 100°F+, and solar panel output decreases at very high temperatures due to thermal derating — typically 0.3–0.5% per degree Celsius above 25°C (77°F). This can reduce summer peak output by 5–15%. Premium monocrystalline panels with low temperature coefficients (e.g., SunPower, REC) perform better in Texas heat. Ensure adequate roof ventilation around the mounting system.
🔋 Battery Storage and Grid Resilience
The 2021 ERCOT winter storm left millions of Texans without power for days. This has driven strong demand for solar-plus-battery systems that can operate as a microgrid during outages. Battery systems (Tesla Powerwall, Enphase IQ, Franklin Electric) add $8,000–$15,000 to install cost but qualify for the 30% ITC when installed with solar, effectively reducing the net premium to $5,600–$10,500.
⚡ Choosing a Solar-Friendly REP
In ERCOT's deregulated market, your retail electric provider (REP) determines your solar buyback rate. Providers like Green Mountain Energy, TXU Energy, and Reliant have offered solar buyback plans with competitive per-kWh credits. Compare REP solar plans on the Power to Choose website, and choose a plan that maximizes the value of your exported solar.
🌩️ Hail and Weather Durability
Texas — particularly North Texas, the DFW metro, and the Panhandle — is part of "Hail Alley," one of the most hail-prone regions in the country. When evaluating solar panels for Texas, look for panels rated to IEC 61215 hail standards (2" hail at 50 mph). Many premium manufacturers offer Class 4 impact-resistant panels. Confirm your homeowner's insurance covers solar panels before installation, and ask installers about warranties that cover hail damage.
Solar Panels in Texas — Frequently Asked Questions
Is solar worth it in Texas?▾
Does Texas have a solar tax credit or incentives?▾
How long does solar payback take in Texas?▾
How much do solar panels cost in Texas?▾
How does Texas's ERCOT grid affect solar decisions?▾
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Ready to See Your Texas Solar Estimate?
With 5.2peak sun hours per day, a strong federal tax credit, and one of the country's best property tax exemptions for solar, Texas homeowners are well-positioned to benefit from going solar. The 30% federal ITC alone can cut the net cost of a typical system by $5,000–$8,000.
Use the calculator above to enter your monthly bill and get a personalized solar estimate for your Texas home. When you're ready for a firm quote, get bids from 2–3 NABCEP-certified local installers — prices can vary by $1–$3 per watt, and comparing quotes is the single best way to reduce your total cost.
Disclaimer: Solar panel cost estimates for Texas are based on NREL PVWatts sun hour data, EIA 2024 residential electricity rates, and LBNL Tracking the Sun install cost data. Cost ranges are general estimates for planning purposes. Actual installed costs vary by system size, equipment brand, installer, and location within Texas. Incentive information is current as of 2025 but may change. Net metering policies vary by retail electric provider in ERCOT. This is not tax or financial advice — consult a qualified tax professional regarding the federal ITC and a licensed solar installer for accurate quotes.