Five years ago, a Powerwall that watched your rate schedule and shifted load on its own sounded like a novelty. Now it's the baseline for anyone paying attention to their bill. The next five years look like they'll do to the rest of the house what battery automation already did to your energy bill: turn every appliance, every EV, and every neighbor's rooftop system into something that can talk to the grid and to each other.
Here's what's actually coming, based on where the hardware, the utilities, and the regulators are right now.
Trend 1: Vehicle-to-Grid (V2G) Technology
Your EV already has more usable battery capacity than your Powerwall. A Model Y Long Range pack holds somewhere around 75–80 kWh; a single Powerwall holds 13.5 kWh. Right now, almost none of that capacity does anything for your house when the sun goes down. That's changing, unevenly.
Ford's F-150 Lightning shipped with vehicle-to-home through the Charge Station Pro, delivering up to 9.6 kW into the house during an outage. Ford has since stopped selling the charger, and lists home backup only for the 2022 to 2025 trucks, which tells you how early this still is. Cybertruck's Powershare does up to 11.5 kW of home backup through a Universal Wall Connector and a Powershare Gateway, and as of this month Tesla lets it pair with a Powerwall 3 for longer runtime. GM ships a vehicle-to-home bundle that islands the house and feeds the panel from a Silverado EV, Blazer EV, Equinox EV or Lyriq, at the same 9.6 kW as Ford. Kia and Hyundai have vehicle-to-load ports that can run a campsite or a job site; only the EV9 has a real path to the breaker panel in the US so far, and it needs a third-party charger.
Regulation is pushing the same direction, slowly. California's SB 59 lets the state require bidirectional capability in new EVs, but no mandate has been adopted yet. What has landed is compensation: PG&E's vehicle-to-everything pilot pays a finalized export rate through 2026, and Matter 1.5, released last November, added bidirectional EV charging and state-of-charge reporting to the smart-home standard, which matters more than it sounds (see the next section). Arizona hasn't got an EV export program. SRP's EV price plans are one-way, and APS's grid-support pilot is for stationary batteries. Bidirectional cars in Phoenix are a few years behind California.
The practical effect for Powerwall owners: within a few years, "how much stored energy do I have" will mean your Powerwall plus whatever's parked in the garage. Today the two mostly fight each other over the same peak window. An automation layer that only knows about the wall-mounted battery is going to look incomplete pretty fast.
Trend 2: Deeper Smart Home Integration
Most home energy systems today treat the house as one big load. Your Powerwall discharges or holds reserve based on total demand, but it doesn't know whether that spike is the dryer or the EV charger. That's changing as load-level monitoring gets cheaper.
Span replaces the whole panel and monitors and controls 32 circuits; Lumin clips onto the panel you already have and controls up to 12. Both let you shed individual loads instead of the whole house. Combine that with Matter, the interoperability standard whose board includes Apple, Google, Amazon and Samsung, and you get a future where your water heater, your thermostat, and your EV charger all report status and take commands through one common language instead of three incompatible apps. That's no longer hypothetical: Matter 1.4 added device types for solar inverters, home batteries, heat pumps, water heaters and EV chargers in November 2024, and Matter 1.5 added a tariff device type a year later, so an appliance can learn your rate plan and forecast pricing directly.
Water heaters are an underrated piece of this. A 50-gallon electric water heater is basically a thermal battery: heat it up during off-peak hours or when solar is surging, and it holds that heat for hours without drawing more power during your peak window. PG&E's WatterSaver program pays heat pump water heater owners $50 to enroll and $5 a month to let the utility shift their heating schedule. Not glamorous, but it's cheap capacity that doesn't require a new battery.
For someone running DemandGuard today, the direction is clear. Automation that currently manages one variable, battery reserve against a target demand, is going to expand to manage a whole stack of controllable loads. The math gets more complex, but so does the potential savings.
Trend 3: The Rise of AI-Powered Energy Management
Most home battery automation today, including DemandGuard, works reactively. It watches your demand in real time and holds the battery or switches modes when you cross a threshold. That works well, but it's responding to what's already happening rather than what's about to happen.
The next generation looks ahead. The forecast says 112°F in Phoenix on Thursday, so the system tops the battery up Wednesday night on off-peak rates instead of waiting to react to Thursday's AC load. A model trained on your last six months of usage notices you run the dryer every Tuesday around 7pm, right in the middle of SRP's peak window, and pre-positions reserve before it happens instead of after.
This isn't speculative. It's a straightforward extension of the demand forecasting utilities already do at the grid level, scaled down to a single house. The limiting factor has been data: you need enough historical usage, weather correlation, and rate-plan awareness to make a prediction worth trusting over a simple reactive rule. That data is accumulating fast now that automated systems are logging every interval. Grid Getter already puts a 12-hour weather forecast next to your battery state; deciding what to do about it is still a person's job, and that gap is exactly what closes next.
Trend 4: The Growth of Community-Scale Energy Projects
Individual batteries are useful. Thousands of them acting together are more valuable, to the grid and to the owners getting paid for it.
Virtual power plants (VPPs) aggregate home batteries into a dispatchable resource utilities can call on during peak stress, the same way they'd call on a gas peaker plant. Tesla runs VPP programs with PG&E, SCE and SDG&E under California's Emergency Load Reduction Program, paying $2 per kWh of extra discharge during grid events, and the state's own Demand Side Grid Support program pays up to $350 a year per enrolled Powerwall. Arizona is further along than most people assume. APS Storage Rewards pays Powerwall owners $110 per average kW delivered over the May to October season, and SRP's Battery Partner Program pays $55 per average kW per season, summer and winter. Both take Powerwall 2, 3 and Plus. If you're in the Phoenix metro and your battery isn't enrolled in one of them, you're leaving a bill credit on the table.
EIA's outlook for 2026 shows why this matters. Of 86 GW of new utility-scale capacity planned this year, 24 GW is battery storage, second only to solar. Texas, California and Arizona account for 80% of that battery capacity between them. That's not a coincidence. Those are the states with the most rooftop solar and the most aggressive time-of-use rates. Grid-scale and behind-the-meter storage are growing in the same places for the same reason: solar makes midday power cheap and evening power expensive, and storage is what smooths the gap. It smooths the emissions curve too, as long as the battery charges from the right hours.
Community solar is a smaller piece of the same shift, and a slower one. California's regulator rejected the solar industry's proposed tariff in favor of a program built on existing pricing, and APS's Solar Communities program is fully subscribed. The idea of energy assets getting networked and coordinated instead of operating alone is the same; the policy just hasn't caught up to it the way it has for batteries.
What This Means If You Own a Powerwall Today
None of this makes what you're doing now obsolete. A house that already has a battery talking to a rate plan and a peak window is much closer to plugging in an EV, a smart water heater, or a VPP enrollment than a house starting from zero.
Grid Getter handles the core of this today. DemandGuard watches your grid draw every minute against a target you set and, when a spike is coming, holds the battery or flips the Powerwall's mode so the battery covers it instead of the grid. Peak Time raises your reserve at the start of your utility's peak window so there's still something left for the expensive hours, and Weather Guard stops Demand Floor from lowering that reserve when Storm Watch is active or severe weather is forecast. SRP's E-27 and APS windows come preconfigured; anywhere else, you set the window by hand. As V2G, appliance-level control and VPP enrollment become real options in your market, the automation layer you're already running is what makes plugging them in simple instead of another app to babysit.
If you haven't looked at your automation settings recently, check your target demand against your last few utility bills. Rate plans shift, and a threshold that made sense a year ago might be leaving savings on the table today. If you're not running Grid Getter yet, the free tier shows you what your actual peak demand looks like before you decide anything else.
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