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Generate, store, and save. Keller homeowners paying $0.16/kWh can save $55,826+ over 25 years with a combined solar + battery system.
Combined Bundle
One Installer, One Warranty — NuWatt installs solar + battery together in Keller. No subcontractors, no lead sharing.
8 kW solar + 13.5 kWh battery at Oncor Electric Delivery rates
Solar System
$22,288
Battery System
$10,000-$18,000
Combined Incentives
$0
Est. Net Cost
$36,288
Solar Savings/yr
$1,531
Payback Period
23.7 years
25-Year Savings
$55,826+
Store excess solar energy during the day and use it at night instead of buying from Oncor Electric Delivery at $0.16/kWh.
Use stored solar energy during peak hours to avoid the highest rates and reduce your grid dependence.
Texas averages 48 hours of outages per year. A battery keeps your home powered when the grid goes down.
Oncor Electric Delivery charges $0.16/kWh today. With solar + battery, you lock in energy costs and protect against future rate hikes.
Keller, Texas residents pay $0.16 per kWh with Oncor Electric Delivery, which is 5% below the national average. At this rate, a typical household spends approximately $1,723 per year on electricity. A combined solar + battery system generates clean energy during the day, stores the excess, and powers your home around the clock—dramatically reducing or eliminating your Oncor Electric Delivery bill.
A battery stores excess solar energy generated during the day for use at night and during outages. Texas averages 48 hours of power outages per year, making battery backup a practical investment for Keller homeowners. When paired with solar panels, battery storage maximizes self-consumption and reduces grid dependence.
The federal residential solar and battery tax credit (Section 25D) expired December 31, 2025. Homeowners purchasing with cash or a loan no longer receive a federal tax credit. However, state and utility incentives still apply: Texas offers solar incentive programs through the Grid Resilience. NuWatt Energy installs both solar and battery storage directly in Keller—one crew, one warranty, no subcontractors.
8 kW system for Keller
System Cost
$22,288
Annual Production
9,600 kWh
Annual Savings
$1,531
State Incentive
$0
Solar Payback
14.6 years
25-Year Savings
$55,826
Tesla Powerwall 3 · 13.5 kWh
Battery Cost
$10,000-$18,000
Usable Capacity
13.5 kWh
Backup Duration
10-12 hours
Warranty
10 years
Outage Protection
48+ hrs/yr avg
Expired December 31, 2025. Previously 30% for residential solar and battery. No longer available for homeowner purchases.
Texas has no state battery rebate but batteries are essential for grid resilience.
investor_owned · $0.16/kWh
Solar Rebate
N/A
Battery Rebate
N/A
Net Metering
Not available
+ 66 more towns in Texas
Save $1,531/year with backup power. Free estimate, no obligation.
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