Updated November 15, 2026. Octopus Energy has published fuller PowerStore terms since launch, including a 10-year battery agreement, a 20% battery floor and early-exit fees. This article now reflects those terms.
What the Octopus PowerStore Plan Means for Texas Homeowners
If you're a Houston homeowner looking at a home battery plan in Texas with no down payment, Octopus Energy's PowerStore plan is probably on your list. It puts a 30 kWh Lunar Energy battery in your home for $0 upfront, then charges $45 a month for the battery on top of an electricity plan with an 8-cent energy charge. (For the bigger picture on battery costs, tax credits and sizing, see the complete guide to home battery storage in Texas.)
The headline is simple. The fine print isn't. The 8-cent rate is locked for three years, but the battery agreement runs 10 years, and that gap is easy to miss. Here's what PowerStore actually costs, what you're agreeing to, and the questions to ask before you join the waitlist.
What Octopus PowerStore Includes
Octopus Energy and Lunar Energy announced PowerStore in April 2026, as PV Magazine USA reported at launch. Octopus's own PowerStore plan page now spells out the terms:
- The battery: a 30 kWh Lunar Energy battery, about 6.5 feet tall and two feet wide, that can go indoors or outdoors. Octopus lists a $0 installation fee.
- The battery payment: $45 a month under a 10-year battery agreement.
- The electricity: as of November 15, 2026, an 8 cents per kWh energy charge on a 36-month fixed-rate plan. Your utility's delivery charges are added on top.
- Where it's offered: homeowners in the Houston and Dallas areas only, with eligibility decided case by case.
- How to get it: a phased rollout with a waitlist. Octopus says installation typically takes three to five weeks once your home qualifies.
Octopus runs the battery day to day. On most days it cycles the battery to cover your home's peak-hour use or to send stored energy to the grid, which Octopus calls virtual power plant (VPP) activity. You only pay for the electricity that charges the battery when that energy ends up powering your home. When Octopus exports it to the grid, you don't pay for it. PV Magazine's launch coverage also notes the electricity is 100% green energy backed by renewable energy certificates (RECs).
What PowerStore Really Costs Each Month
The 8-cent figure is only the energy charge. As of November 15, 2026, Octopus's own estimate puts the all-in rate, once utility delivery charges are added, at 13.5 cents per kWh in CenterPoint (Houston) and 14.0 cents per kWh in Oncor (Dallas). Add the $45 battery payment and here's what a month looks like at three usage levels:
Estimated PowerStore costs as of November 15, 2026: Octopus's all-in rate estimate plus the $45 battery payment, before taxes.
| Monthly usage |
CenterPoint (Houston) monthly cost |
CenterPoint effective rate, cents per kWh |
Oncor (Dallas) monthly cost |
Oncor effective rate, cents per kWh |
| 1,000 kWh |
$180 |
18.0 |
$185 |
18.5 |
| 1,200 kWh |
$207 |
17.25 |
$213 |
17.75 |
| 2,000 kWh |
$315 |
15.75 |
$325 |
16.25 |
Your Electricity Facts Label (EFL) shows the exact average price at 500, 1,000 and 2,000 kWh, because Texas rules (16 TAC 25.475) require it, so check those numbers against your own usage.
For context, August 2026 is the latest month in the U.S. Energy Information Administration's monthly price data as of November 15, 2026, and the average Texas residential price that month was 15.91 cents per kWh. At 1,200 kWh that's about $191 a month, so PowerStore runs roughly $16 more in CenterPoint and $22 more in Oncor. That statewide average blends every plan type and every provider in Texas, including city utilities and co-ops outside the competitive market. If you're on a lower-priced fixed plan today, your gap will be wider. A quick way to size it: at 1,200 kWh, the $45 battery payment alone adds 3.75 cents to every kWh you use.
Octopus is upfront that savings aren't the main point. Its PowerStore FAQ says the program is tailored more for backup power than cost reduction, and that your energy bill shouldn't go up but may not go down either. So think of the monthly premium as the price of backup power you didn't have to buy outright.
The 10-Year Question: What Happens After Year 3
This is the part to read twice. The battery agreement lasts 10 years. The 8-cent energy rate covers the first three. Octopus says customers are set up on a series of contracts across the 10-year battery agreement, and that pricing can't be locked for the full term because of market swings. You know your first 36 months. Years four through 10 depend on the electricity contracts Octopus offers you then.
The battery also isn't yours during the agreement. Octopus says you have the option to own it at the end of the battery service agreement, that a third party can appraise it at fair market value after year five, and that Octopus will offer purchase pricing at year 10. Octopus's plan page doesn't say outright whether the $45 battery payment can change over those 10 years, so get that in writing before you sign.
Early Exit, Moving and Cancellation Fees
Octopus's FAQ lists a $1,000 deinstallation fee if you cancel the battery agreement early. If you also switch your electricity away from Octopus, the PowerStore EFL carries a separate $300 early termination fee, for up to $1,300 combined.
Selling your home is the other scenario to plan for. Octopus says the buyers can take over the rest of your battery agreement. If they decline, the battery comes out and the $1,000 fee applies. Texas rules bar an electricity early termination fee when you move and give your provider a forwarding address, but that protection covers the electricity contract, not a separate battery agreement. If there's a real chance you'll move in the next 10 years, ask how a buyer takes over the agreement before you commit.
Already Have Solar? How PowerStore Credits Your Exports
PowerStore works with existing solar if you own the system (a leased system doesn't qualify) and it runs on one of the inverter brands Octopus lists: Enphase, Growatt, Tesla, SolarEdge, Fronius or SMA. Octopus notes that some setups need extra work to be compatible, which can mean a one-time cost of up to $500 paid to the installer.
The export credit comes in two tiers. Under the PowerStore terms of service, energy sent to the grid is credited at your retail energy rate up to the amount of energy you pulled from the grid that billing cycle. Only exports beyond that amount earn a separate credit, which the terms (effective May 21, 2026) set at no less than 4 cents per kWh, reduced by any other export compensation you get for the same energy. So in a month where your panels send out more than your home brings in, that extra energy earns a lot less.
A 1:1 solar buyback plan works differently: every exported kWh is credited at the same rate you pay for the energy you use. That's how Ambit Energy's solar buyback is set up. If your system overproduces in spring and fall, run both structures against your last 12 months of solar data before you decide.
Outage Backup: How Long 30 kWh Lasts
Octopus says a 30 kWh battery can power a home for anywhere from several hours to a couple of days, depending on what's running. Air conditioning and EV charging drain it fast. Essentials like the refrigerator, lights and Wi-Fi stretch it much longer.
The detail that matters most is the charge level when an outage starts. Octopus says it keeps at least 20% charge under normal grid conditions while the battery is doing VPP activity, which is 6 kWh on a 30 kWh battery. When a storm or another outage risk is in the forecast, Octopus says its outage watch software pauses VPP activity and charges the battery to full. A forecasted storm should find you fully charged. A surprise outage on an ordinary afternoon could start much closer to that 6 kWh floor.
Here's what that means in practice. A home using 1,200 kWh a month averages 40 kWh a day. At that pace, a full 30 kWh battery covers about 18 hours of normal use, while 6 kWh covers less than four. Cutting back to essentials stretches both. If backup during unplanned outages is the main reason you want a battery, ask Octopus how often the battery sits near the floor. For more on what a battery can carry through a Texas outage, see this guide to battery backup during power outages.
Buying a Battery Instead? The Federal Credit Is Gone
If you're weighing PowerStore against buying a battery outright, the 30% federal Residential Clean Energy Credit won't help anymore. The IRS says the credit isn't available for any property placed in service after December 31, 2025. A battery you buy and install in 2026 starts at full price, which is part of why a $0-down model is worth a look. The home battery storage guide covers current installed prices and what changed.
The 5-Question Home Battery Plan Checklist
Before you sign any battery-backed electricity plan, run through these five questions. They apply to PowerStore and to any other provider's version.
- What's your real all-in cost per kWh? Take the EFL's average price at your usage, add the monthly battery fee divided by your kWh, and compare it with your current all-in rate, not just the headline energy charge.
- What happens after the fixed rate ends? If the battery agreement runs longer than the rate lock, ask how later rates will be set and how much notice you'll get.
- What does it cost to leave? Texas requires the EFL to disclose early termination penalties. Get the battery agreement's fees in writing too, including what happens when you sell the home.
- How are your solar exports credited? Full retail credit, a tiered credit or a flat low rate can change your annual savings a lot.
- How much charge is held back for you? Get the reserve floor and the storm-charging policy in writing, since that's what decides your backup in an unplanned outage.
Questions to Ask Octopus Before You Sign
- Is the $45 battery payment fixed for all 10 years of the agreement?
- What electricity rates and contract lengths will be offered after the first 36 months?
- How will the year-five fair market appraisal and the year-10 purchase price be calculated?
- Can the 20% minimum charge ever drop, and how far ahead of a forecasted storm does the battery charge to full?
- What warranty covers the battery, and who services it over the 10 years?
- What does a buyer of your home need to do to take over the agreement?
Other Ways to Pair a Battery With a Power Plan
PowerStore isn't the only model in Texas. Base Power also pairs its own home battery with Texas electricity plans, and its availability and pricing vary by address. If you'd rather own a battery outright, the plan you pair it with matters just as much. The guide to whether Free Nights electricity plans are worth it in Texas walks through charging overnight, and this guide covers home battery backup without solar. Whatever you compare, run each option through the same checklist instead of comparing headline rates.
How Ambit Energy, VIP Energy Service Can Help
Ambit Energy, VIP Energy Service helps Texas homeowners look at the full picture before a battery decision: your usage, your solar setup if you have one, your home's outage history and how long you plan to stay. Options include 1:1 solar buyback, no-deposit plans for qualified homeowners and Free Nights plans. If you're weighing PowerStore against your current plan, get your free energy quote or enroll online. Plans and rates vary by location and usage, so always review the Electricity Facts Label (EFL) before you enroll. Plan details and rates subject to change.
Frequently Asked Questions
What is a battery-backed electricity plan in Texas?
A battery-backed electricity plan bundles a home battery with an electricity plan from a retail electric provider. The battery is installed at your home with little or no upfront cost in exchange for a multi-year agreement and usually a monthly battery payment. The provider typically controls the battery to provide grid services and holds some charge in reserve for you. These plans are only offered in the competitive parts of Texas, where you can choose your electricity provider.
Is Octopus PowerStore available in Houston?
Yes. Octopus says PowerStore is available only to homeowners in the Houston (CenterPoint) and Dallas (Oncor) areas, through a phased rollout with a waitlist. Eligibility is decided case by case, and installation typically takes three to five weeks once a home qualifies.
How long is the Octopus PowerStore contract?
The battery agreement is 10 years. As of November 15, 2026, the 8 cents per kWh energy charge is locked for the first 36 months, and Octopus says pricing after that comes through a series of electricity contracts across the 10-year term. Octopus says you can choose to own the battery at the end of the agreement, with a fair market appraisal available after year five and purchase pricing offered at year 10.
What does it cost to cancel Octopus PowerStore early?
Octopus lists a $1,000 deinstallation fee if you cancel the battery agreement early. If you also switch electricity providers, the PowerStore EFL carries a separate $300 early termination fee, for up to $1,300 combined. If you sell your home and the buyers decline to take over the agreement, the battery is removed and the $1,000 fee applies.
How does Octopus PowerStore credit solar exports?
Under the PowerStore terms, energy sent to the grid is credited at your retail energy rate up to the amount of energy you imported that billing cycle. Exports beyond that earn a credit of no less than 4 cents per kWh under terms effective May 21, 2026. A 1:1 solar buyback plan, by comparison, credits every exported kWh at the same rate you pay for energy.
How long will a 30 kWh home battery power a Texas home?
Octopus says anywhere from several hours to a couple of days, depending on what's running. At an average of 40 kWh a day, a full 30 kWh battery covers about 18 hours of normal use, and longer if you limit it to essentials. Octopus keeps a 20% floor, or 6 kWh, under normal grid conditions and charges the battery to full when a storm is forecast, so a surprise outage can start with much less stored energy.
How does a home battery affect your Texas electricity bill?
A home battery plan affects your bill in three ways. A monthly battery payment adds a fixed cost. Shifting use away from peak hours can lower your effective rate, depending on your plan. And if you have solar, how your plan credits exported energy decides how much your panels earn. Octopus says PowerStore is tailored more for backup power than cost reduction, so your bill shouldn't go up but may not go down either.
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