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Winter Storm Uri killed 246 Texans and caused $197 billion in damage. Since then, Storms Elliott and Fern proved ERCOT's isolated grid remains fragile. Solar + battery is the only residential solution that provides indefinite backup without fuel dependency.
246
Deaths (Uri)
$197B
Total Damage (Uri)
4.5M
Homes Lost Power
$0
Federal ITC (Expired)
2026 Federal Tax Credit Update: The Section 25D residential energy tax credit expired December 31, 2025. Homeowners purchasing solar or batteries in 2026 receive $0 in federal tax credits. Third-party-owned systems (leases/PPAs) may still benefit from Section 48/48E if the financing company begins construction before July 4, 2026.
Texas has experienced catastrophic grid failures with increasing frequency. Each event reveals the same structural vulnerability: ERCOT's isolated grid cannot handle extreme weather.
Outages
4.5 million homes
Deaths
246 confirmed
Damage
$197 billion
Duration
2-4+ days
Frozen gas wells, unweatherized wind turbines, cascading grid collapse. ERCOT came within 4 minutes and 37 seconds of total grid failure.
Outages
150,000+ homes
Deaths
87 (nationwide)
Damage
$5.4 billion (TX share)
Duration
12-48 hours
Rapid temperature drop from 70F to below freezing in hours. Generator trips and gas supply constraints despite post-Uri weatherization mandates.
Outages
500,000+ homes
Deaths
Under investigation
Damage
TBD
Duration
1-3 days
Arctic blast across central TX. Despite weatherization improvements, aging infrastructure and surging demand overwhelmed capacity.
Outages
500,000+ at risk
Deaths
300+ heat-related
Damage
Not quantified
Duration
Rolling conservation alerts
Record-breaking 110F+ temperatures for weeks. ERCOT issued repeated conservation appeals. AC demand pushed grid to operating limits.
Four major grid events in four years. Each one was supposed to be the "wake-up call" that fixed the system. Yet Winter Storm Fern in January 2025 proved the grid remains vulnerable. Post-Uri weatherization mandates helped — Elliott was less catastrophic than Uri — but did not solve the fundamental problem: ERCOT is an island, and islands have no backup.
Solar + battery is the only residential solution that does not depend on grid reliability or fuel supply chains.
The continental U.S. has three power grids: the Eastern Interconnection, the Western Interconnection, and ERCOT. Texas deliberately isolated its grid to avoid federal regulation. This decision has consequences.
26M
Customers served
90%
Of TX electric load
0
Interstate connections
4:37
Minutes from total collapse (Uri)
Get a free backup power assessment with battery sizing customized for your home, loads, and budget.
Get Your Free AssessmentA standard grid-tied solar system shuts off during outages for safety (anti-islanding). Solar + battery creates a microgrid that powers your home independently.
Your system detects the outage within milliseconds and disconnects from the utility grid (anti-islanding). Your home automatically switches to battery power. You may not even notice the transition.
The battery supplies electricity to your essential loads (or whole home, depending on system size). Non-essential circuits can be automatically disconnected to extend battery duration.
When the sun rises, your solar panels charge the battery while simultaneously powering your home. A 10 kW system in Texas produces enough to fully recharge a 13.5 kWh battery by mid-morning.
This daily cycle of solar charging and battery use continues indefinitely until the grid is restored. Unlike a generator, you never need fuel. During Uri, some solar + battery homes ran for the entire 4+ day outage.
"Islanding" means your home disconnects from the utility grid and operates as an independent power island. Your solar + battery system creates its own microgrid. This is essential for two reasons:
Day 1: Battery fully charged — 12-24 hrs of essential power
Day 2: Battery depleted — no power
Day 3: Still no power
Day 1: Full power, battery recharges by midday
Day 2: Full power, cycle repeats
Day 3+: Full power, indefinite operation
Texas battery sizing is unique because of extreme summer AC loads and winter heating demands. The right size depends on what you want to power during an outage.
What It Powers
Refrigerator, lights, Wi-Fi, phone charging, garage door
Battery Required
1 battery (13.5 kWh)
Summer Duration
12-24 hours
Winter Duration
18-36 hours
Installed Cost (2026)
$10,000-$13,000
What It Powers
Essentials + window AC unit, TV, microwave, medical devices
Battery Required
2 batteries (27 kWh)
Summer Duration
8-16 hours
Winter Duration
12-24 hours
Installed Cost (2026)
$20,000-$26,000
What It Powers
Everything including central AC, electric range, dryer, pool pump
Battery Required
3+ batteries (40+ kWh)
Summer Duration
6-10 hours (AC running)
Winter Duration
10-18 hours
Installed Cost (2026)
$30,000-$45,000+
Central AC draws 3,000-5,000+ watts continuously. A single 13.5 kWh battery running AC alone drains in 3-5 hours. Summer outages force a choice between comfort and duration.
Pro tip from TX installers: Use the battery for essentials + a single window AC unit in the bedroom ($150-$300). This provides sleeping comfort while preserving battery for 12+ hours. A window unit draws only 500-1,200 watts versus 3,000-5,000 for central AC.
Heat tolerance is critical in Texas. These three batteries dominate the TX residential market and are rated for extreme summer temperatures.
Best For
New solar + battery installs. Integrated inverter simplifies installation.
Best For
Existing Enphase microinverter systems. Modular scaling.
Best For
Whole-home backup priority. aGate controller manages multiple sources.
Texas summers routinely exceed 100°F. To maximize battery lifespan and maintain warranty coverage, install in a shaded location, inside a garage, or on the north side of your home. Avoid direct afternoon sun. All three batteries above are rated for TX heat, but excessive heat accelerates lithium-ion degradation. A well-sited installation will last the full warranty term.
Both provide backup power, but they work very differently. Understanding the tradeoffs is critical — especially since generators failed many Texans during Uri when natural gas supply froze.
| Category | Generator | Solar + Battery |
|---|---|---|
| Upfront Cost | $3,000-$8,000 (whole-home standby) | $10,000-$16,000 (single battery) |
| Fuel Required | Natural gas or propane (supply can freeze) | None (solar recharges daily) |
| Noise Level | 65-75 dB (louder than a vacuum) | Silent operation |
| Maintenance | Oil changes, filters, annual service ($200-$500/yr) | Zero maintenance |
| Emissions | Carbon monoxide, exhaust fumes | Zero emissions |
| Runtime | ∼Unlimited (with fuel supply) | ∼12-24 hrs essentials (recharges with solar) |
| Automatic Transfer | Yes (10-30 second delay) | Yes (millisecond switchover) |
| Whole-Home AC | Yes (22+ kW units) | Requires 2-3 batteries ($25K-$42K) |
| Revenue Potential | None | DRRS grid services ($300-$1,000/yr) |
| Lifespan | 15-25 years | 10-15 years (warranty) |
Upfront Cost
Fuel Required
Noise Level
Maintenance
Emissions
Runtime
Automatic Transfer
Whole-Home AC
Revenue Potential
Lifespan
During Winter Storm Uri, natural gas supply froze at the wellhead. Many Texans with gas-powered generators had a backup system that could not run because there was no gas. Propane generators fared better but still required tank refills during impassable road conditions. Solar + battery has no fuel dependency — the sun recharges it daily.
Many TX installers now recommend a combined approach: one solar + battery system for essential loads with automatic millisecond switchover, plus a portable or small standby generator for extended multi-day events where central AC is critical. The battery handles 90% of outages (short disruptions under 24 hours) while the generator provides insurance for the rare multi-day catastrophe. Total cost: $15,000-$20,000 for a battery + $1,500-$3,000 for a portable generator.
Get a personalized backup power recommendation based on your home, loads, and budget.
Get Your Free Backup QuoteWith the federal ITC expired, solar + battery is a pure value proposition: energy savings + grid protection. No tax credit subsidizes the cost. Here is what systems actually cost in 2026.
$25,000-$32,000
None (shuts down during outage)
Bill reduction only, no backup needed
$35,000-$42,000
Essential loads for 12-24 hrs + solar recharge
Most TX homeowners seeking outage protection
$45,000-$55,000
Partial home + AC for 8-16 hrs + solar recharge
Summer AC backup priority
Before 2026, a $40,000 solar + battery system would have qualified for a $12,000 federal tax credit (30%), bringing the effective cost to $28,000. That credit is gone. This means the battery decision in 2026 is purely about grid protection value — not tax optimization. For many Texans who lived through Uri, that protection is worth every dollar.
Third-party ownership option: If a lease or PPA provider offers your system, they may claim the Section 48/48E commercial ITC (must begin construction before July 4, 2026). This could lower your monthly payment by 15-25% compared to buying outright.
Electric rate
Average TX rate: $0.13-0.16/kWh (ERCOT). Austin Energy ~$0.12, CPS ~$0.125. Lower than NE states, extending payback.
Solar production
TX averages 5.5-6.5 peak sun hours/day — among the best in the U.S. More production = faster payback.
Self-consumption
Batteries increase self-consumption from 40-60% to 80-90%, avoiding grid purchases at full retail rate.
DRRS revenue
ERCOT DRRS may add $300-$1,000/year. Rates still being finalized for 2026 launch.
Texas homeowner insurance premiums are the highest in the nation and climbing. Some carriers are beginning to offer discounts for homes with backup power systems.
23%
TX homeowner insurance increase since 2021
Texas homeowner insurance premiums have risen 23% since Winter Storm Uri, driven by catastrophic weather claims. The statewide average is now $4,042/year — highest in the nation.
5-15%
Potential discount for backup power
Some Texas insurers (USAA, Amica, Liberty Mutual) offer 5-15% discounts for homes with whole-home backup systems. This can offset $200-$600/year in premiums.
$2.1B
TX insurance claims from pipe bursts (Uri)
Burst pipes during Uri generated $2.1B in insurance claims. Battery-powered heating prevents freezing pipes during winter outages.
Call your insurance agent and ask specifically about "backup power" or "whole-home battery" discounts
Mention that your system prevents frozen pipe bursts — the largest single claim category from Uri
Provide documentation: battery capacity, automatic transfer switch, installer certification
If your current carrier does not offer a discount, get quotes from USAA, Amica, and Liberty Mutual
Document your battery system in your home inventory for claims purposes
The federal tax credit landscape changed dramatically. Here is exactly what is available for solar and battery purchases in Texas in 2026.
Warning: Any website or installer claiming a 30% federal tax credit on a cash or loan purchase in 2026 is providing outdated or incorrect information.
Note: If a lease/PPA provider offers a lower monthly payment because they claim 48/48E, verify the contract terms. You receive no tax credit directly.
Texas does not offer a state-level battery incentive or rebate. Some municipal utilities like Austin Energy provide modest solar rebates, but there is no statewide battery program. The ERCOT DRRS program provides revenue potential rather than an upfront incentive. This makes the battery purchase decision in Texas purely about grid protection and energy independence value.
Everything Texas homeowners ask about solar + battery backup for grid protection.
When the ERCOT grid goes down, a standard grid-tied solar system shuts off for safety (anti-islanding protection). But with a battery, the system creates a microgrid — it disconnects from the utility grid in milliseconds and powers your home from stored battery energy. During daylight, solar panels recharge the battery while simultaneously powering your home. This cycle repeats daily, providing indefinite backup as long as the sun shines. Without solar, a battery is a one-time backup lasting 12-24 hours for essential loads.
No. The Section 25D residential energy tax credit expired on December 31, 2025 under the OBBBA signed July 4, 2025. Homeowners who purchase solar panels, batteries, or a combined system with cash or a loan in 2026 receive $0 in federal tax credits. However, if you obtain your system through a lease or power purchase agreement (PPA), the third-party system owner (financing company) may claim the Section 48 or 48E commercial ITC if they begin construction before July 4, 2026. This could lower your monthly payment.
A 10 kW solar system with one 13.5 kWh battery costs $35,000 to $42,000 installed in Texas in 2026. Solar-only systems run $25,000 to $32,000 for 10 kW. Adding a second battery for AC backup brings the total to $45,000 to $55,000. These prices reflect the post-ITC reality — no federal tax credit is available for homeowner purchases. Texas has no state solar or battery rebate, though some municipal utilities like Austin Energy offer modest solar incentives.
It depends on your priorities and budget. A whole-home standby generator costs $3,000 to $8,000 and provides unlimited runtime with fuel. A battery costs $10,000 to $16,000 but is silent, requires no fuel, recharges from solar, and can earn revenue through ERCOT DRRS. The main generator risk in Texas: natural gas supply froze during Uri, leaving many generators useless. Many Texas homeowners now combine one battery for essential loads with automatic switchover, plus a portable generator for extended multi-day AC needs.
Central AC in Texas draws 3,000 to 5,000+ watts continuously. A single 13.5 kWh battery running AC alone would drain in 3 to 5 hours. For meaningful summer AC backup, most installers recommend at least 2 batteries (27 kWh), which provides 8 to 16 hours of partial-home power including a window AC unit. Whole-home AC backup requires 3+ batteries (40+ kWh) at $30,000 to $45,000. With solar recharging during the day, 2 batteries can sustain essential loads plus limited AC indefinitely.
ERCOT is intentionally isolated from the national power grid. The continental U.S. has three grids: the Eastern Interconnection, the Western Interconnection, and ERCOT. Texas deliberately separated to avoid federal regulation. During emergencies, Texas cannot import power from neighboring states — unlike virtually every other state. Combined with extreme weather (sub-freezing winters and 110°F+ summers), an aging natural gas infrastructure, and surging population growth, ERCOT faces unique reliability challenges that make backup power more valuable in Texas than almost anywhere else.
Some Texas insurers are beginning to offer 5 to 15% premium discounts for homes with whole-home backup power systems. USAA, Amica, and Liberty Mutual have pilot programs. The logic: battery backup prevents pipe bursts during winter freezes (the single largest claim category from Uri at $2.1 billion), reduces food spoilage claims, and lowers displacement costs. Contact your insurer to ask about backup power discounts — this is an evolving market and more carriers are expected to offer incentives as grid reliability concerns grow.
ERCOT Solar + Battery Backup Guide
DRRS program, battery ROI, CPS Energy strategy
TX Solar Panel Cost 2026
Regional pricing, no ITC reality
Solar Buyback Plans 2026
Compare REP buyback rates and plans
Texas Solar Guide 2026
Complete overview of going solar in TX
Solar Without Tax Credit 2026
Is solar still worth it without the ITC?
Hail-Resistant Solar Panels
Panels rated for TX hail storms
After Winter Storm Uri and Hurricane Beryl, ERCOT grid outage protection is a necessity for Texas homeowners. Propel financing lets you add solar (and bundle a battery) with $0 down — a third-party owner installs FEOC-compliant Silfab 440W panels and claims the 40% Section 48E ITC, passing the savings to you as a fixed monthly payment. An 8 kW system at $2.90/W ($23,200) becomes ~$13,920 effective cost at ~$117/month. 8.99% APR, 25-year term, 660 FICO minimum. Must begin construction before July 4, 2026.
See Propel Financing DetailsResearch
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Last updated: March 2026 | Data sources: ERCOT, PUCT, NOAA, manufacturer specifications, TX Department of Insurance, installer pricing surveys