Plug-in solar in California isn't legal yet. It's a bill on the Governor's desk.
SB 868 — the Plug and Play Solar Act — cleared the Legislature on August 26, 2026. It has not been signed, it has not been chaptered, and even if the Governor signs it, nothing changes on the ground until January 1, 2027. That distinction matters, because a lot of what's being written about balcony solar in California right now is written in the present tense. Here is what the bill would actually do, what it deliberately does not do, and why the safety argument against it is more interesting than either side usually admits.
Four different dates. Only one of them has happened.
Almost every confused article about this bill is confusing two of the four periods below. The bill's own timeline is unusually clean, so it's worth laying out properly before anything else.
| Period | What is actually true |
|---|---|
| Now, until the Governor acts | SB 868 is a passed bill, not a law. Plug-in solar sits where it always has: nothing explicitly authorizes it, and connecting generation to the grid outside the utility's Rule 21 interconnection process is not permitted. |
| If signed, through Dec 31, 2026 | Chaptered but not operative. There is no urgency clause, so a bill signed in 2026 becomes operative at the start of the next year. Nothing changes for anyone during this window. |
| Jan 1, 2027 → Jan 1, 2030 | The exemption is live. A qualifying device needs no utility approval, no interconnection application and no fee — the utility may ask you to complete a simple online registration form and nothing more. |
| Jan 1, 2030 onward | The exemption sunsets and is repealed. What remains is §8532, which makes it unlawful to sell a non-compliant plug-in device in California. The sunset was added by amendment at the utilities' request. |
SB 868 is authored by Senator Scott Wiener and adds Chapter 13 (commencing with §8530) to Division 4.1 of the Public Utilities Code. It passed the Senate 35–1 on May 19, 2026, cleared Assembly Appropriations 11–0 on August 13, passed the Assembly on August 25, and the Senate concurred 36–4 on August 26. It was explicitly modelled on Utah's HB 340. If you see §8520 cited anywhere, that's a stale reference to an earlier draft.
One or two panels, a microinverter, and a cord.
A plug-in system — balcony solar, or PIPV, for plug-in photovoltaic — is one or two modules, usually 200 to 400 watts each, wired to a microinverter that converts DC straight to 120-volt household AC, terminating in a cord with an ordinary attachment plug. There is no battery. There is nothing landing on your service panel. Nobody goes on the roof.
The part most explanations get wrong is where the power goes. The microinverter matches the voltage, frequency and phase of the utility AC already present on that branch circuit, then adds its own current onto the same wires. Any load already running in the house consumes that solar current first, simply because the inverter is electrically nearer than the utility transformer. Only the shortfall keeps coming in through the meter.
So the bill goes down not because you sold anything, but because you bought less. That single mechanical fact is why plug-in solar is a self-consumption product rather than a generation product, and it drives every number further down this page.
Why this is a renter's product
Roughly seven in ten Americans can't access conventional rooftop solar — renters, apartment and condo residents, shaded or north-facing roofs, people who can't finance a system, people who'll move within a few years. For that group the comparison isn't plug-in versus rooftop. It's plug-in versus nothing.
Six conditions, and all six have to be true.
§8530(c) defines a "portable solar generation device." Miss any one of these and the device isn't covered by the exemption at all — it's just an unpermitted generator on your branch circuit.
- Maximum aggregated AC output of 1,200 watts per dwelling. Read that carefully: it's a per-dwelling aggregate cap, not a per-device cap. A household can't stack six 1,000-watt units and claim each one qualifies. It is also measured in AC watts at the inverter, not the DC wattage printed on the modules — the same principle that catches people out on net metering expansions.
- It connects and disconnects through a receptacle. The word "receptacle" replaced "single standard electrical outlet" by amendment, which turns out to matter — see the certification section below.
- It is intended to offset onsite consumption. Not to generate for export. The statute says so in its own definition.
- It meets the most recent National Electrical Code and the California Electrical Code (Part 3 of Title 24 of the California Code of Regulations). The California code requirement was added by amendment; the original draft only referenced the NEC.
- It is "certified as a plug-in photovoltaic system by Underwriters Laboratories, or an equivalent" nationally recognised testing laboratory. The statute names no UL number. That omission is doing a lot of work.
- It has a UL-certified anti-backfeed and anti-islanding feature that isolates the device during an outage. Also added by amendment. This is the requirement that makes blackout power impossible — see below.
It exempts you from Rule 21. That's the entire mechanism.
The bill doesn't create a program, a rebate, a tariff or an export credit. It creates a hole in the interconnection rules and drops these devices through it. §8531(a):
§8531(b) then lists what a utility may not require. It may not demand approval before you install or use the device. It may not impose any fee or charge related to the device or to the electricity it makes. It may not require additional controls or equipment beyond what's already built into the certified product.
The one lever utilities keep
"A simple online registration form" — address, make, model, size. That's notice, not approval. The Assembly committee analysis itself characterised it as effectively toothless, and it is the only thing standing between a compliant device and the wall.
This one reaches SMUD too
Note that last clause: local publicly owned electric utility rules. Almost every solar rule we write about on this site stops at the CPUC's jurisdiction and therefore doesn't apply in SMUD or Roseville Electric territory. This one is drafted to reach municipal utilities as well. For Sacramento-area readers that's unusual and worth noting.
Separately: R.25-08-004 is a pre-existing CPUC scoping proceeding considering whether plug-in devices should fall under Rule 21 at all. It is agency-initiated and predates the bill. SB 868 neither creates it nor gives the Commission a deadline in it, and how the two would reconcile is genuinely unresolved. And AB 2612 is a different bill entirely — it would let the Building Standards Commission adopt standards for new-construction circuits designed to accept plug-in solar. The two get merged constantly. They shouldn't be.
The standard exists. The products mostly don't.
This is the most under-reported fact about SB 868, and it comes out of California's own committee record. The statute requires certification "as a plug-in photovoltaic system" but names no standard. The Assembly committee analysis identifies it: UL 3700, the Outline of Investigation for Interactive Plug-In PV Equipment and Systems, published at the end of 2025.
UL 3700 is different from what came before because it evaluates the complete assembly — modules, microinverter, cabling, output cord and attachment plug together — rather than certifying the microinverter alone as a component. That distinction is exactly why the hazard in the next section fell through the cracks for years: a UL 1741-listed inverter is certified to behave correctly on its own terms, but nothing was evaluating whether its output was safe relative to the circuit it was being plugged into.
Which produces an odd situation. If the Governor signs and the exemption goes live on January 1, 2027, a Californian who reads a headline and goes shopping will find a very thin shelf of genuinely compliant kits sitting next to an enormous supply of European gear — built for 230 V / 50 Hz, certified to German standards, not listed for use in the United States. That gear is easy to buy online and it will not satisfy §8530(c). Fire officials and the electrical unions made a version of this point during the hearings, arguing the bill "sets the safety standards for devices that currently do not exist and exempt[s] those non-existent devices from any utility oversight." It's the sharpest objection anyone raised.
One correction worth making, because it circulates widely: UL 3009 is not the standard for plug-in solar. No such standard applies in this space. It is UL 3700. If an article cites 3009, it is mistaken and probably copied from another article that was.
The fire-risk argument is better than its reputation.
The debate usually gets flattened into "utilities say it's dangerous, advocates say it's fine." The actual engineering is more interesting than that, and all three hazards trace to one root cause: using a receptacle as a power source when the entire system was designed on the assumption that a receptacle is only ever a power sink.
The invisible branch-circuit overload
This is the serious one and it's genuinely counterintuitive. The breaker protecting a circuit sits at the service panel and measures only current flowing outward from the panel. A plug-in inverter injects its current downstream of that breaker, at the receptacle. The breaker cannot see it. So the wire in the wall can carry utility current plus inverter current simultaneously, past the conductor's thermal rating, while the breaker — which only ever sees the utility half — never trips. That is a real hazard, not a utility talking point.
The energized plug blades
Ordinary American plugs and receptacles were designed on the premise that the receptacle is always the live side and the blades go dead the instant they're pulled. Plug-in solar inverts that. In daylight the blades are an output, and on disconnection they can stay energized at hazardous voltage. Germany's recessed outlets are touch-safe in a way standard US hardware is not.
Receptacles aren't listed for backfeed
Conventional NEMA receptacles are UL-listed as load-side devices. There is no such thing as a backfeed listing for one. The hardware is being used outside the conditions it was certified for — which is a paperwork problem right up until it isn't.
Anti-islanding is two seconds, not milliseconds
You will read that these devices shut down "within milliseconds" when the grid disappears. They don't. Under UL 1741 and IEEE 1547-2018, a grid-interactive inverter must detect loss of the grid and cease energizing within two seconds, tested at 33%, 66% and 100% of rated power against matched resonant loads. Two seconds is comfortably fast enough for the job it was designed for — keeping a lineworker from being electrocuted by a re-energized island during outage repair. It is not fast enough to make an exposed plug blade instantly safe. That's precisely why the hazard above is stated as "up to two seconds," and why getting the number wrong quietly undermines the whole safety discussion.
Both things are true about the utilities' position, and we'd rather say both. The engineering concern is legitimate. It is also true that every kilowatt-hour generated behind a customer's meter is a kilowatt-hour the utility doesn't sell. Note how the bill actually resolved: PG&E moved to "support if amended," the firefighters and roughly a dozen IBEW locals moved to neutral, and the 2030 sunset went in at the utilities' request. SCE and SDG&E stayed at "oppose unless amended." That's a negotiated outcome, not a rout in either direction.
A range, never a point estimate — and here's why.
Published savings figures for an 800-watt system span nearly fourfold, roughly $13 to $50 a month. That spread isn't sloppiness; it's mounting, orientation, shading and rate structure doing exactly what they do. Anyone quoting you a single annual number for this product is quoting an assumption, not a result. So here is the arithmetic with its assumptions visible, which is the only honest way to present it.
| Configuration | Annual production | At ~39¢/kWh |
|---|---|---|
| 800 W, optimal tilt (ground or roof) | ~1,320 kWh | ~$520 |
| 800 W, vertical balcony rail | ~920 kWh | ~$360 |
| 400 W, vertical balcony rail | ~460 kWh | ~$180 |
Assumptions, stated openly: Northern California specific yield of 1,650 kWh per kW per year for a well-oriented tilted array (Sacramento models at about 1,695); a 70% derate for a vertical, often non-south-facing balcony mount; 100% self-consumption, because the device is sized below baseline household load; and PG&E's bundled residential average of roughly 39¢/kWh as of March 2026. Change any one of those and the answer moves. This is a method, not a promise — and a real customer's marginal rate, which is what actually determines savings, can be materially higher or lower than a bundled average.
The California-specific problem almost nobody mentions
California's three large investor-owned utilities now bill residential customers a flat monthly fixed charge — $24.15 standard, $12.00 for income-qualified affordable housing, $6.00 on CARE — authorized by AB 205 and set by the CPUC in D.24-05-028. PG&E calls it the Base Services Charge and rolled it out in March 2026. It hits plug-in solar owners twice:
- You cannot offset a fixed charge with generation. Solar only reduces kilowatt-hours purchased. That's roughly $290 a year no plug-in device can touch, however much sun it gets.
- Every kilowatt-hour you self-consume is now worth 5 to 7 cents less than before the redesign, because the fixed charge arrived paired with a reduction in the volumetric rate. Plug-in solar's entire value is volumetric self-consumption, so it absorbs the full brunt of that with no offsetting benefit.
There is no solar-specific exemption. The charge applies to legacy NEM customers, Net Billing Tariff customers and plug-in owners identically. And while we're being even-handed: "rates always go up" is a sales line, not a fact. California rates rose enormously between 2020 and 2025 on any measure you pick, but PG&E's own newsroom reports 2026 bills running about $12 a month lower than January 2024, after a cut in September 2025 and a further residential decrease effective January 1, 2026.
Five things it cannot do. Each one is real.
- It will not power anything in a blackout. Ever. Anti-islanding is mandatory and non-optional — the instant grid voltage disappears, a compliant inverter must stop producing. It is a lineworker-safety requirement, not a product defect, and no amount of money buys a compliant device that behaves differently. This is the single most common wrong expectation people bring to the product, and in a state where Public Safety Power Shutoffs are routine, it is a consequential one. If outage resilience is the goal, the product is a battery, not a panel.
- Exported power earns you nothing. Because the bill exempts these devices from interconnection and net-metering rules rather than enrolling them in an export program, anything pushed back through your meter is uncompensated in the general case. Note what the bill also doesn't do: it doesn't prohibit export, and it doesn't require zero-export hardware — the committee observed that mandating it would raise cost and undercut the turnkey premise. California chose a different path than Europe here. France bans grid export from plug-in solar outright; Germany caps output far lower. California chose a high cap and no export ban, which puts the entire burden of getting value out of the device on sizing it correctly.
- No federal tax credit. See above. §25D is gone for anything placed in service after the end of 2025.
- It is not a substitute for a real system. A device at the full 1,200-watt California cap, realistically mounted, makes on the order of 1,400 kWh a year. A typical California home uses 6,000 to 9,000. Even at the legal maximum this addresses a fraction of a household's consumption. It's a bill-reduction accessory, not an energy plan, and anyone whose goal is to substantially eliminate an electric bill needs a permitted rooftop system.
- The bill is silent on local permits. SB 868 preempts interconnection rules. It contains no permit-preemption language and says nothing about your city or county's building and electrical permitting. The working assumption is that a non-hardwired plug-in device wouldn't normally trigger a permit — but the bill doesn't say so, and we're not going to pretend it does.
This is where it gets careful.
A plug-in device is still generating capacity added to a property. If your building is on legacy NEM 1.0 or NEM 2.0, adding generating capacity is precisely the thing that can put that grandfathering at risk — and SB 868 says nothing whatsoever about how a plug-in device interacts with an existing net metering agreement. That silence is an identified gap in the law, not a documented permission.
The asymmetry decides it. A plug-in device might save a few hundred dollars a year. A grandfathered tariff can be worth considerably more than that, every year, for every year left in its term. Nobody should trade the second for the first on the strength of an article — including this one.
Plug-in solar is not the same thing as an off-grid addition
This confusion comes up constantly and it's worth separating cleanly, because the two things sit on opposite sides of the line that matters.
A genuinely standalone system is outside the tariff
A system with its own array, its own battery and its own loads, electrically isolated from utility-served wiring, never files an interconnection application — so there is nothing for the utility to review against your expansion allowance. That's a legitimate way to add capacity to a property that's already on a legacy tariff. It still needs permits, it still has to satisfy the electrical code, and "off-grid" has to mean actually isolated rather than merely set not to export. How that compares with the two tariff options →
A plug-in device is the opposite of that
It is grid-interactive by definition. It synchronises to the utility waveform, it feeds a utility-served circuit through a receptacle, and it stops dead the moment the grid does. SB 868 exempts it from interconnection requirements — it does not make it a standalone system, and it does not take it outside your property's relationship with the utility. If what you actually want is capacity that doesn't touch your net metering agreement, plug-in solar is not that product.
Germany has well over a million of these. That's the evidence base.
Germany is the only place where plug-in solar became a genuine mass-market product, and the German numbers are the best available evidence for what happens when a country legalizes it. The Balkonkraftwerk is capped at 800 W of inverter AC output — raised from 600 W in May 2024 — with a single registration entry and no separate grid-operator notification.
| Jurisdiction | AC cap | Status |
|---|---|---|
| Germany | 800 W | ~1.2–1.5 million registered systems; about 430,000 new units in 2025, roughly 3.2% of all new German solar capacity that year |
| Utah | 1,200 W | HB 340, the first US state — signed March 2025, effective May 7, 2025. Every subsequent state bill follows its structure |
| Virginia | — | HB 395 / SB 250 signed; effective July 2026 |
| New York | — | S8512A passed and sent to the Governor |
| Colorado | 395 W / 1,920 W | Two-tier: no electrician or permit under 395 W, licensed electrician required above it. Effective January 1, 2027 |
| California | 1,200 W | SB 868 passed the Legislature August 26, 2026. Not signed. Would be effective January 1, 2027, sunsetting January 1, 2030 |
California would be one of a growing number of states following Utah, Virginia and New York. You'll see claims that "thirty states are considering it" or that "ten states passed it in 2026" — we couldn't verify either against a primary legislative tracker, so we're not repeating them. The German count is the registered figure from the Bundesnetzagentur; a widely-circulated "4 million" number is a market estimate that includes unregistered and legacy units.
Good product. Specific person. Wrong for most of the people asking.
Buy one if…
You rent, or you're in an apartment or condo, or your roof is shaded or north-facing, or you can't finance a system, or you'll move within a few years — and you want to do something. A five-to-seven-year payback on a purchase that comes with you when you move is a perfectly sensible proposition, and for that person this isn't a worse version of rooftop solar. It's the only version available.
Don't buy one if…
You own your roof, it gets decent sun, and you plan to stay. Then a permitted system is straightforwardly the better answer and it isn't close. Don't buy one for outage backup — it cannot do that. Don't buy one expecting to halve your bill. And don't buy one at all before January 1, 2027, because until then the legal question isn't settled and the compliant shelf is nearly empty.
The framing that serves people best: plug-in solar is a good answer to "I can't get rooftop solar and I want to do something." It is a bad answer to "I want to cut my electric bill in half." Those are different questions and they deserve different products.
We don't sell plug-in kits. We're telling you about them anyway.
There is no version of this page that makes us money, which is roughly the point. We're brokers — we shop multiple vendors on behalf of the owner rather than carrying a product line — so when the honest answer is "buy a $400 device from someone else" or "wait until 2027," we can say it. Where we're actually useful on this topic is one step up in scale.
If your tenants are asking about balcony solar
- Plug-in solar exists because renters have no other option — which is a demand signal about your building, not about the device
- A shared or master-metered system reaches every unit instead of one balcony at a time
- Common-area load is usually the easiest and fastest place to start
- Commercial and multifamily projects still have federal §48E available, unlike anything residential
- We run the vendor comparison and you see all of it
Apartments, condos and mixed-use across California. Multifamily and apartment solar →
Before you add anything to a legacy system
- Your original interconnected AC capacity established from the paperwork, not estimated
- PTO date located and your remaining legacy term calculated
- Actual production measured against what the system was modelled to make
- Written report you can hand to a buyer, an agent or a lender
- Extensive inspection is $699 and adds thermal imaging
Residential pricing, greater Sacramento. What's covered → · The expansion rules →
Plug-in solar in California, frequently asked.
Is plug-in solar legal in California right now?
Not as of August 27, 2026. SB 868 passed the Assembly on August 25 and the Senate concurred on August 26, but it has not been signed and has not been chaptered. Anyone describing plug-in solar as already legal in California is wrong. There's no urgency clause, so a bill signed in 2026 would take effect January 1, 2027.
How big a system does SB 868 allow?
1,200 watts of aggregated AC output per dwelling. It's a per-dwelling aggregate cap, not per device, so you can't stack several units and claim each qualifies individually. It's measured in AC watts at the inverter, not the DC wattage of the modules — the same distinction that catches people out on net metering expansions. Germany, for comparison, caps AC output at 800 W.
Will it power my house during a blackout?
No, and no compliant device at any price will. SB 868 requires a UL-certified anti-islanding feature that isolates the device during an outage. That requirement exists so a lineworker repairing a downed conductor isn't electrocuted by a customer's solar, and it can't be bypassed on a compliant product. If outage resilience is what you're after, the product is a battery.
Do I get paid for the power I export?
No. The bill exempts these devices from interconnection and net-metering rules rather than enrolling them in an export program, so there's no export credit. It also doesn't prohibit export or require zero-export hardware. In practice anything not consumed in the home at that instant flows to the grid and generally earns nothing — which is why sizing the device below your baseline load matters more here than with rooftop solar.
Which UL standard actually applies?
UL 3700, the Outline of Investigation for Interactive Plug-In PV Equipment and Systems, published at the end of 2025. It evaluates the complete assembly rather than the microinverter alone. If a source cites UL 3009, it's mistaken — no such standard applies here. As of the June 2026 committee analysis no complete kit had achieved certification, and the first compliant microinverter reached the US market in July 2026.
Does it stop my landlord or HOA saying no?
No. On the text as passed, SB 868 governs what a utility may require. It contains no landlord-tenant provision, no HOA provision and no amendment to the Solar Rights Act. Consumer articles claiming otherwise appear to be describing Colorado's law, which does explicitly bar HOAs and landlords from prohibiting these systems. SB 868 settles the utility question; it does not settle the lease question.
Is there a rebate or tax credit?
Nothing federal. IRC §25D terminated for property placed in service after December 31, 2025 under P.L. 119-21, and a portable device is personal property rather than a permanent improvement to a dwelling, so it very likely never qualified anyway. We could not find any California state or utility rebate that would apply to plug-in devices either. What's left of the incentive landscape →
I have NEM 1.0 or NEM 2.0. Can I add one?
Ask your utility in writing first, and get the answer on paper. SB 868 is silent on how a plug-in device interacts with an existing net metering agreement, and adding generating capacity is exactly what can put grandfathering at risk. That silence is a gap, not a permission, and the asymmetry is severe — a few hundred dollars a year against a tariff worth considerably more. The full grandfathering rules →
Does this apply in SMUD territory?
On the text as passed, yes. The exemption in §8531 reaches "local publicly owned electric utility rules," which covers municipal utilities like SMUD and Roseville Electric. That's unusual — most California solar rules stop at the CPUC's jurisdiction and simply don't apply in SMUD territory. This one is drafted to reach further.
Do I need an electrician or a permit?
Under SB 868 you'd need no utility approval, no interconnection application and no fee — only a simple online registration form if your utility asks for one. Local building permits are a separate question the bill doesn't touch. California chose one flat 1,200 W cap with no electrician tier; Colorado went the other way, requiring a licensed electrician above 395 watts. Check with your building department, not just your utility.
Can I buy a European kit online and use it here?
You can buy it. It won't satisfy §8530(c). Most of what's available online is 230 V / 50 Hz equipment certified to German standards and not listed for use in the United States. The compliant US shelf is genuinely thin right now, and the gap between "buyable" and "compliant" is the real consumer-protection story in this category.
What happens on January 1, 2030?
The interconnection exemption sunsets and is repealed. What survives is §8532, which makes it unlawful to sell a non-compliant plug-in device in California. The sunset was added by amendment at the utilities' request, which makes this a three-year experiment with a built-in review point rather than a permanent change in the law.