Solar in Houston, TX: 2026 Cost, Savings & Payback
Calculate 2026 solar panel cost, payback, and 25-year bill savings in Houston, Texas. Based on 5.4 peak sun hours/day, 12.6¢/kWh average electricity rate, CenterPoint Energy utility context, and current IRS guidance for the ended federal residential clean energy credit.
Solar in Houston, TX: quick answer
A typical 6kW solar system in Houston costs about $15,300 before local or state incentives. For 2026 installs, the federal residential clean energy credit is modeled as $0, so the estimated cost remains about $15,300 before any local incentive. It produces about 9,461 kWh per year from 5.4 peak sun hours/day, saves about $1,188 per year, and reaches payback in about 12.9 years.
2026 6kW Cost
$15,300
Monthly Savings
$99
Production / kW
1,577 kWh
Panel Count
~15
5.4
Peak Sun Hours/Day
12.6¢
Avg Rate (¢/kWh)
12.9 yr
Payback Period
$41k
25-Year Savings
Houston Solar Overview
Calculate Your Houston Solar Savings
Houston average: $129/mo
South-facing roofs produce the most energy
Add $8,000-$12,000 for whole-home battery backup
Annual Production
kWh/year
Annual Savings
per year
Net System Cost
after 2026 federal credit
Payback Period
break-even time
Bill Offset and Export Assumptions
Current Annual Bill
$1,548
Estimated Usage
12,325 kWh
Bill Offset
77%
Used On Site
100%
Exported production is discounted in this planning model instead of being treated as a guaranteed one-for-one bill credit. For Houston, verify the current CenterPoint Energy export-credit method and any fixed monthly charges before relying on the payback number.
25-Year Total Savings
$40,579
Monthly Savings
$99
2026 Federal Credit
$0
Cumulative Savings vs System Cost
Cost Breakdown
| Item | Houston | National Avg |
|---|---|---|
| Gross System Cost (6kW) | $15,300 | $17,100 |
| 2026 Federal Residential Credit | -$0 | $0 |
| Net System Cost | $15,300 | $17,100 |
| Cost Per Watt | $2.55/W | $2.85/W |
Solar Potential in Houston
Sun Hours vs National Average
Houston gets 20% more sun than the national average.
Climate Advantages
- 233 sunny days per year
- Average temperature: 67.7°F — moderate climate with good solar conditions
- Average roof size: 1,958 sq ft — enough for a 108-panel system
Houston Solar Incentives & Programs
Federal Investment Tax Credit (ITC)
For 2026 planning, JouleIO does not subtract a federal residential clean energy credit. The IRS says the Residential Clean Energy Credit was 30% for eligible property installed from 2022 through December 31, 2025, and is not available for property placed in service after December 31, 2025.
Source: IRS Residential Clean Energy Credit and IRS One Big Beautiful Bill provisions.
Texas State Incentives
Texas property tax exemption for solar; utility buyback programs vary
Net Metering — CenterPoint Energy
CenterPoint Energy does not currently offer standard net metering in Houston. Alternative buyback programs may be available — contact them for details.
Environmental Impact in Houston
3.9
Tons CO2 Offset/Year
65
Equivalent Trees Planted
0.9
Homes Worth of Energy
Based on 9,461 kWh annual production with a 6kW system. EPA average: 0.417 metric tons CO2 per MWh, 10,632 kWh per US home.
Solar Energy in Houston, Texas
Houston, Texas receives an average of 5.4 peak sun hours per day, providing excellent conditions for residential solar installations. With electricity rates averaging 12.6¢ per kWh from CenterPoint Energy, below the national average, but with rates rising 2-3% annually, the long-term savings are still meaningful.
A typical 6kW solar system in Houston produces approximately 9,461 kWh per year, saving homeowners an estimated $1,188 annually. The system pays for itself in about 12.9 years, after which you enjoy essentially free electricity for the remaining 12+ years of the system's warranty life.
Houston has a solar penetration rate of 2.9% — indicating early-stage solar adoption with tremendous growth potential as prices continue to fall. The cost of living index of 93 (national average: 100) reflects a lower cost of living, keeping installation costs competitive.
Other Cities in Texas
Abilene, TX
Allen, TX
Amarillo, TX
Arlington, TX
Austin, TX
Beaumont, TX
Brownsville, TX
Carrollton, TX
College Station, TX
Corpus Christi, TX
Dallas, TX
Denton, TX
Methodology & Solar Data Sources for Houston
How we calculate Houston solar potential and savings: Solar production estimates use NREL's PVWatts calculator methodology, applied to Houston's specific solar irradiance (peak sun hours), tilt angle, and azimuth. Cost figures combine NREL's Annual Technology Baseline for system pricing, ENERGY STAR's database for residential PV averages, and EIA Form 861 utility rate data for Texas.
- Solar irradiance for Houston: based on NREL National Solar Radiation Database (NSRDB) — 30-year average peak sun hours per day.
- System sizing assumes residential rooftop installation with standard 350-400W panels, calibrated to typical Houston household electricity usage.
- Federal tax credit: modeled as 0% for 2026 residential installations because IRS guidance says the Residential Clean Energy Credit is not available for property placed in service after December 31, 2025.
- Net metering assumes 1:1 retail-rate compensation typical in Texas (verify with local utility — some have shifted to net billing or avoided-cost rates).
- System lifetime standard 25 years with annual degradation of 0.5%/year per industry warranty norms.
Authoritative US solar data sources:
- NREL PVWatts Calculator — official US solar production estimator
- NREL National Solar Radiation Database — 30-year solar irradiance data
- IRS Residential Clean Energy Credit — 2026 federal residential credit status
- IRS One Big Beautiful Bill provisions — clean energy credit expiration overview
- DSIRE — State Solar Incentives — searchable database for Texas
- EIA Electric Power Monthly — Texas utility rate data
- ENERGY STAR Solar — efficient solar product database
Solar Disclaimer: Solar savings vary based on roof orientation, shading, system quality, installer markup, financing terms, utility rate plan, and policy changes. Always get 3+ quotes from NABCEP-certified installers and review contracts carefully. Tax credit eligibility depends on tax liability — consult a tax professional.
Reviewed by Brazora Monk · Last updated 2026 · NREL irradiance data per NSRDB latest release
Frequently Asked Questions
How much do solar panels cost in Houston, TX?
The average cost of a 6kW solar panel system in Houston is approximately $15,300 before local or state incentives ($2.55/watt). For 2026 planning, this calculator does not subtract a federal residential clean energy credit because IRS guidance says the credit is not available for property placed in service after December 31, 2025. Texas property tax exemption for solar; utility buyback programs vary
How many solar panels do I need in Houston, TX?
A typical 6kW residential solar system in Houston needs about 15 panels if each panel is rated near 400 watts. That system produces about 9,461 kWh per year in this estimate, or roughly 1,577 kWh per installed kW before shading, roof orientation, and inverter losses are customized.
How many peak sun hours does Houston get?
Houston, TX receives an average of 5.4 peak sun hours per day and approximately 233 sunny days per year. This is above the national average of 4.5 hours, making it an excellent location for solar energy.
What is the solar payback period in Houston?
The average solar payback period in Houston is approximately 12.9 years for a 6kW cash-price estimate before local or state incentives. After payback, your solar panels generate essentially free electricity for the remaining warranty life. Over 25 years, bill savings can reach about $40,579 before subtracting installation cost.
Does Houston have net metering?
Houston does not currently have standard net metering. However, CenterPoint Energy may offer alternative solar buyback programs. Contact them for current rates and policies.
Is solar worth it in Houston, TX in 2026?
It can be. The 12.9-year estimated payback is moderate, so the decision depends on quote quality, financing terms, roof condition, and local incentives. For 2026 installs, JouleIO does not assume a federal residential credit; local incentives and net metering are the main financial drivers.