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Texas Solar Panel Calculator

Local rates, sun hours & savings — specific to Texas

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5.2

Peak Sun Hrs/Day

$0.135

Avg Rate ($/kWh)

$161

Avg Monthly Bill

12.5 yrs

Est. Payback

Texas is the fastest-growing residential solar market in the US, fueled by 5.20 peak sun hours per day and a deregulated electricity market where rates can spike during summer peaks. Because Texas has no statewide net metering mandate, savings vary significantly by utility and rate plan — making it especially important to run the numbers for your specific situation rather than relying on national averages.

5.2 hrs

Sun Hours/Day

$0.135

Rate ($/kWh)

$2.55

Avg Cost/Watt

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Solar Data for Texas

Peak Sun Hours
5.2 hrs/day (NREL annual avg)
Avg Electricity Rate
$0.1352/kWh (EIA 2024)
Avg Monthly Bill
$161/month
Avg Install Cost
$2.55/W (LBNL Tracking the Sun)
Est. Payback (avg bill)
12.5 years (before 30% ITC)
Federal ITC
30% through 2032

Solar Panels in Texas — Frequently Asked Questions

Do I need a permit for solar panel installation?▾
Yes, virtually all residential solar installations require building permits and electrical permits, plus utility interconnection approval. Your solar installer handles all of this as part of the installation process — it's a standard part of what you're paying for. Permit fees range from $100 to $500 depending on your municipality.
Does roof orientation affect how much power solar panels produce?▾
Yes, significantly. South-facing roofs receive the most direct sunlight and are ideal (factor: 1.00). East and west-facing roofs produce about 15% less. North-facing roofs produce roughly 30% less. Flat roofs can be angled for optimal output.
How much CO₂ does a solar system offset?▾
The EPA estimates that the average US grid emits 0.855 lbs of CO₂ per kWh. A 10 kW solar system producing 14,000 kWh/year offsets about 11,970 lbs (5.4 metric tons) of CO₂ annually — equivalent to planting 88 trees or driving 12,000 fewer miles. Over 25 years, that's 300+ metric tons.
How much does a solar system cost installed?▾
Installed solar costs range from $2.50 to $3.50 per watt depending on your state, system size, panel brand, and installer. A 10 kW system runs $25,000–$35,000 before incentives. After the 30% federal ITC, that's $17,500–$24,500. Many states offer additional rebates that can reduce costs further. Get 3 quotes to find competitive local pricing.
Can solar panels completely eliminate my electricity bill?▾
A properly sized solar system can offset 90–100% of your annual electricity use, but you'll likely still have a small monthly connection fee ($10–$20) to stay connected to the grid. If you add battery storage, you can further reduce grid dependency. Net metering allows excess daytime production to offset nighttime usage in many states.

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Solar Savings on a $100/Month Bill

How much solar saves on a $100 monthly electricity bill in Texas

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Solar Savings on a $150/Month Bill

How much solar saves on a $150 monthly electricity bill in Texas

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Solar for 2,500 Sq Ft Homes

How many panels does a 2,500 sq ft home need?

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Solar for 1,800 Sq Ft Homes

How many panels does a 1,800 sq ft home need?

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5 kW Solar System

Full cost and savings breakdown for a 5 kW installation

Disclaimer: Data sources: NREL PVWatts (sun hours), EIA 2024 Residential Rate Survey (electricity rates), Lawrence Berkeley National Lab Tracking the Sun (install costs). Estimates are for planning only. Actual savings depend on your specific roof, shading, utility policies, and available incentives. Not financial or tax advice.