Home Backup Power in Texas: Costs, Outage Risk, Incentives & Vetted Installers

Texas has delivered two separate proofs, three years apart, that “the grid is fine” and “your house has power” are not the same sentence. In February 2021, Winter Storm Uri knocked out electricity to 4.5 million Texas homes and businesses for up to four days, in a statewide freeze that came — by ERCOT’s own account — minutes from a total, weeks-long grid collapse. In July 2024, Hurricane Beryl proved the opposite failure mode: ERCOT had plenty of electricity to sell that week, and more than 2.2 million CenterPoint customers around Houston sat in the dark anyway, some past a full week, deep into Gulf Coast summer heat, waiting on downed trees and broken poles rather than a shortage of megawatts.

Two different disasters, two different seasons, two different causes — and the same lesson underneath: “am I protected from the next Texas outage” is really two separate questions, and most homeowners size their backup power against only one of them.

Two outages, three years apart, that redefined “prepared” in Texas

Put them side by side and the two failure modes stop looking like variations on the same story and start looking like two different systems breaking for two different reasons.

Event	When	Peak without power	Worst-case duration	Root cause
Winter Storm Uri	Feb 2021	4.5 million	Up to 4 days	Power plants and gas wellheads froze faster than generation could be replaced — a generation shortfall, managed statewide by ERCOT
Hurricane Beryl	Jul 2024	2.6 million	8+ days for some	80mph winds downed trees and poles onto an under-maintained distribution network — a local wires failure, managed by the utility, not ERCOT

Beryl’s numbers are worth sitting with, because they haven’t had their own headline the way Uri has. More than 2.2 million CenterPoint customers lost power within hours of landfall, peaking above 2.6 million across the state. A week later, close to 2 million had been restored — but eight days after landfall, more than 260,000 Houston-area customers were still sitting without electricity, in July heat, with no working refrigeration and no AC. At least 23 deaths were tied to the storm and the outage that followed it, several of them heat-related, in the days after the wind died down. CenterPoint brought in roughly 12,000 additional outside workers to speed restoration and was later criticized, including in a Public Utility Commission investigation, over vegetation management along its lines and being short-staffed for a storm of that size. We’ve told the full Uri story separately — the three layers of backup power that separated the houses that were fine from the ones that weren’t — here.

Why ERCOT being “fine” doesn’t protect your street

Every summer, Texans watch the same ritual: a hot week arrives, ERCOT flags tight conditions or asks for conservation, and the news runs a reserve-margin graphic. It trains people to think the risk is “running out of electricity, statewide.” Heading into summer 2026, ERCOT’s own base-case outlook puts that reserve margin at roughly 18.3% at the peak-demand hour — comfortably above the industry’s own adequacy target — even as peak demand itself is forecast to set a fresh all-time record, somewhere around 90,500–98,000 MW, well past the prior record of 85,508 MW set in August 2023. A large share of that new demand isn’t homes running more air conditioning; Texas transmission providers now have interconnection requests on file for well over 200 gigawatts of new large-load data-center demand through the early 2030s. On paper, summer 2026 is one of the more comfortable years the state has had in a while.

Beryl is the reason that number can’t be the whole story. The storm hit in the middle of July; ERCOT never issued a conservation appeal; generation was never the constraint at any point that week — and more than 2.2 million Houston-area customers sat without power anyway, some for more than a week, because a tree limb and a utility pole don’t care what the statewide reserve margin says. Reserve margin measures whether Texas can generate enough electricity, in aggregate, on the worst afternoon of the year. It says nothing about whether the specific wire between your street’s transformer and your breaker panel survives the next storm. Those are two different systems run by two different operators — ERCOT manages generation and the transmission grid; your local utility, not ERCOT, owns the poles and lines your house actually plugs into — and Texas has now had a headline failure in each one within three years of the other.

Sizing backup power for a Texas critical load: air conditioning isn’t optional

Most national backup-power guides build a “curated critical load” around the fridge, some lighting, wifi and a well or sump pump, and leave air conditioning off the list as a comfort item. That shortcut is dangerous for roughly half the Texas calendar: a Houston or Dallas summer afternoon with no AC isn’t an inconvenience, it’s a real heat-emergency risk for anyone elderly, very young, or medically fragile — and Beryl’s death toll included heat deaths during the outage itself, not just storm-impact deaths. Any honest Texas critical-load list puts at least one AC zone on it. If someone in the house depends on a CPAP, an oxygen concentrator, or refrigerated medication, size for that circuit first and treat it as non-negotiable — we’ve written up that priority-load case in more depth separately.

Circuit	Running watts	Hours/day	kWh/day
Refrigerator/freezer	150W (cycles ~1/3 of the time)	8	1.2
One mini-split or window AC zone	900W	10	9.0
Well or sump pump (rural)	1,000W	1	1.0
Medical equipment (CPAP/oxygen concentrator)	60–300W	8	0.5–2.4
Wifi, garage door, lighting	150W	6	0.9

Add a single AC zone to the curated list most national guides quote, and a Texas household’s realistic critical-load draw jumps from the 6–10 kWh/day figure you’ll see elsewhere to closer to 11–13 kWh/day. That matters directly for battery sizing: a single Powerwall-class unit (roughly 13.5 kWh usable) that’s often quoted as covering “a day and a half” against a no-AC load covers closer to one day against a Texas one. That’s not a knock on the battery — it’s the reason serious Texas backup plans usually pair one with either a generator or daily solar recharge, rather than leaning on either technology alone. For the full generator-vs-battery decision framework, including runtime, noise, and maintenance trade-offs, see our side-by-side breakdown; for kW sizing tiers by home size, this walks through Generac-class sizing, or run your own numbers through the backup power sizing calculator.

What it actually costs, Texas-adjusted

National 2026 benchmarks put a whole-home standby generator installed at $8,000–$25,000 and a single home battery at $11,000–$17,000 (full line-item breakdown, including why the sticker price is never the installed price, is here). Texas doesn’t move those hardware numbers much, but the site conditions that drive the installed price swing hard by property type:

Texas site type	Typical installed range (2026)	What pushes it
Metro home, natural gas already run to the house	$9,000–$16,000	Short gas-line tie-in, easy panel access, a standard city permit
Rural property, new propane tank	$14,000–$24,000	New tank purchase or lease, a longer trench, RRC-licensed installer scheduling
Coastal, flood-zone, or HOA-governed lot	$16,000–$28,000+	Wind-rated pad or elevated mount, hurricane tie-downs, architectural-review approval

Four Texas-specific details national buying guides tend to miss:

• Propane installs are licensed by the Railroad Commission of Texas — not your city — through its Alternative Fuels Safety Division; the same agency that regulates the state’s oil and gas wells signs off on the tank and line for your generator.
• Solar panels carry broad legal protection from HOA bans under Texas Property Code; standby generators get a weaker, regulable version of it under Section 202.019 — a homeowners association can’t prohibit one outright, but its architectural review committee can still dictate where it sits, how it’s screened, and how loud it’s allowed to run. Check your deed restrictions before an installer shows up with a unit sited for that fight.
• Most home batteries thermally throttle well before a Texas July does; an unshaded, west-facing exterior wall is the wrong mounting spot, a garage or shaded north wall isn’t — a five-minute conversation with your installer, not an afterthought.
• On unincorporated county land, common across rural Texas, there may be no building permit required for the generator or pad at all — but the propane line still needs an RRC-licensed installer regardless of what the county does or doesn’t require.

What Texas actually knocks off the price in 2026 (not much)

Texas has no state income tax, which is a real advantage most years — but it also means there’s no state income-tax credit mechanism to attach a generator or battery rebate to, the way homeowners in some other states get. On the federal side, the 30% Residential Clean Energy Credit that used to apply to home batteries expired for anything installed after December 31, 2025; it never applied to fossil-fuel generators in the first place. And because neither a generator nor a battery is a solar or wind device, neither qualifies for the renewable-device property-tax exemption Texas grants under Tax Code Section 11.27. Run the numbers honestly for 2026 and a Texas backup-power buyer is paying sticker, full stop — which makes comparing real installer quotes against each other the only lever left to pull, since there’s no incentive quietly doing part of the work for you. A few electric cooperatives and municipal utilities run their own small rebate or low-interest loan programs; that’s worth one phone call to your specific provider before you sign anything, since those don’t show up in a general search and aren’t statewide.

Ready to see real 2026 hardware next to those installed-cost ranges? Here’s what’s actually on the market for a Texas home:

Common questions