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Saturday morning, coffee on the balcony. Two solar panels hang on the railing, angled toward the sun, and a cord runs through the door to an ordinary outlet. Inside, the fridge hums, the router blinks and the laptop charges, and for a few hours a good part of that power is coming from the panels instead of the grid. No roof, no installer, no ladder. That’s the promise of balcony solar, and in 2026 it finally arrived in the United States, in some states.
In short: balcony solar (also called plug-in solar) is a small kit of one to four panels with a microinverter that plugs into a regular 120 V outlet and feeds your home’s circuits. Most U.S. state laws cap it at 1,200 W. By our estimate, an 800 W kit in good sun makes about 1,000 kWh a year, worth roughly $180 at average U.S. prices, but only where your state and utility allow it.
This page starts our Balcony and Plug-in Solar section: what these kits are, balcony solar in the USA state by state, what they really produce and save, what they cost, safety rules, renters and HOAs, the kits on sale and the legal-everywhere alternatives.
Balcony solar at a glance
- What it is: solar panels plus a grid-tied microinverter (sometimes a battery) that plug into a standard outlet. The power is used inside your home first.
- Where it’s legal: as of October 2, 2026, ten states have plug-in solar laws (Utah, Maryland, Maine, Vermont, Colorado, Connecticut, Virginia, New Hampshire, New Jersey, California), and some of them start only in 2027. Elsewhere, your utility’s interconnection rules apply.
- Size limit: 1,200 W in most of those states; 1,920 W in Colorado; tiers in Maine (420 W on your own, more with an electrician).
- Savings: modest. Our estimate is about $90 to $280 a year for 400 W to 1,200 W in good sun, if you use all the power at home.
- Not backup power: plug-in inverters must shut off in an outage. Only kits with their own battery and backup outlets keep anything running.
- No federal tax credit in 2026: the 25D credit ended for systems installed after December 31, 2025.
What is balcony solar and how does it work?
Germany made the idea famous: plug-in kits on apartment balconies are common there, known as “Balkonkraftwerke,” or balcony power plants. The American version works the same way. Panels sit on a railing, patio, deck, flat roof or in the yard. They make DC power, and a small microinverter turns it into 120 V AC in step with the grid. A cord from the inverter plugs into an outlet, and from there the power flows into the circuit like power from the grid, only in the other direction.
Your appliances don’t know the difference. Electricity takes the nearest path, so whatever is running in your home at that moment (the fridge, router, TV, a charging laptop, the always-on gadgets) uses the solar power first, and your meter spins slower. If the panels make more than your home is using, the extra flows out to the grid. In most states with plug-in laws you get no credit for that extra, and in Connecticut it may even be billed as usage, which is why sizing matters (more below).
The key safety feature is anti-islanding: the inverter watches the grid and shuts off the instant the grid fails, so it can’t send power onto lines that utility crews think are dead. It also means a basic plug-in kit goes dark during a blackout, just like the outlet it’s plugged into. State laws require this feature, and certified inverters have it. A kit that includes a battery with its own outlets (such as EcoFlow’s STREAM Ultra) can still power devices plugged directly into it during an outage.
Three kinds of “balcony solar”
- Plug-in grid-tied kit: panels plus a microinverter that feeds the outlet. The cheapest way to cut your bill a little, where allowed.
- Plug-in kit with a battery: the battery stores midday sun and releases it in the evening, when you use more, and may offer backup outlets. Costs more. See balcony solar with a battery.
- Off-grid panels with a power station: the panels charge a portable battery, and you plug devices into the battery. Nothing touches your home’s wiring, so it’s allowed everywhere. Better for outages and camping than for savings. See our best solar generators.
Balcony solar in the USA: where it’s legal
Balcony solar USA rules are a patchwork. Utah passed the first law in 2025, and nine more states followed in 2026. Here’s the short version, checked against state sources on October 2, 2026. Our full guide, is balcony solar legal in my state, explains each law: notice rules, renter protections and the fine print.
| State | Limit | Status (October 2026) |
|---|---|---|
| Utah | 1,200 W | In effect since May 7, 2025 |
| Maryland | 1,200 W, one per meter | In effect; notify the utility before installing |
| Maine | 420 W yourself; up to 1,200 W with a licensed electrician | In effect |
| Vermont | 1,200 W per meter, smart meter required | In effect since July 1, 2026 |
| Colorado | 1,920 W | In effect August 12, 2026; HOA and sales rules from January 1, 2027 |
| Connecticut | 1,200 W, one per meter | In effect October 1, 2026 |
| Virginia | 1,200 W per customer or apartment | Starts January 1, 2027 |
| New Hampshire | 1,200 W | Signed; use waits on a certified safety standard and code updates |
| New Jersey | 1,200 W | Signed September 1, 2026; not yet in effect |
| California | 1,200 W per dwelling | Signed September 30, 2026; not yet in effect |
| New York | 1,200 W (bill) | Passed the Legislature; waiting for the governor |
| All other states | No plug-in law | Utility interconnection rules apply |
If your state isn’t on the list, a grid-tied plug-in kit is treated like any other solar system on the grid: an interconnection application to the utility, and often a permit. Don’t plug one in until your utility has approved it in writing. Some sellers call their kits “legal in all 50 states”; that’s a seller’s claim, not something any state has said. The off-grid power-station route needs no approval anywhere.
How much power does balcony solar make?
A solar panel’s watt rating is what it makes in full, direct sun. Over a day, the useful figure is “peak sun hours”: the hours of full-strength sun your spot gets, which change with your location, season and shade. NREL’s free PVWatts calculator gives the number for your address. For a rough estimate we used 4 peak sun hours a day and took off 14% for dirt, wiring, mismatch and other losses (PVWatts’ default loss figure).
| Kit size | Sunny day (our estimate) | Per year (our estimate) | Worth per year at 18.3¢/kWh |
|---|---|---|---|
| 400 W (one large panel) | About 1.4 kWh | About 500 kWh | About $90 |
| 800 W (two panels) | About 2.8 kWh | About 1,000 kWh | About $185 |
| 1,200 W (most states’ limit) | About 4.1 kWh | About 1,500 kWh | About $275 |
These are best-case numbers for panels tilted toward the sun with no shade. Panels hanging straight down on a railing, facing east or west, or shaded part of the day make noticeably less, and winter output is lower everywhere. The money column uses the U.S. average residential price of 18.31 cents per kWh that EIA reported for July 2026; your rate may be higher or lower. And it assumes your home uses every watt the moment it’s made.
Size it to your daytime “base load”
Because most plug-in laws give no credit for power sent back to the grid, the sweet spot is a kit that roughly matches what your home uses on a sunny afternoon when nobody’s cooking: the fridge, router, freezer and standby gadgets. For scale, ENERGY STAR’s median top-freezer fridge uses 363 kWh a year, about 1 kWh a day, and a mesh Wi-Fi router draws roughly 5 to 22 W. If your daytime base load is around 200 W, a 1,200 W kit will push much of its noon output onto the grid for free. Look at your smart meter’s hourly data, if your utility shows it, or measure big appliances with an energy-monitoring smart plug. A battery kit is the other way to use more of what you make.
What does balcony solar cost?
U.S. prices are still higher than in Europe because only a few makers sell certified 120 V kits here. Prices we saw at the makers in October 2026:
- EcoFlow STREAM Microinverter: about $369, panels not included (EcoFlow says it works with third-party panels that meet its input specs and use MC4 connectors).
- EcoFlow STREAM Ultra (1.92 kWh battery with built-in inverter): about $1,399 list, panels not included.
- Craftstrom 1200W Eco-Line Plug and Play Kit (6 panels, 3 inverters): about $2,250.
- Zendure SolarFlow Kit (US: 3.84 kWh battery, 900 W inverter, two 410 W panels): about $3,932, shown sold out.
Using our estimates, a $2,250 kit of 1,200 W that saves about $275 a year pays for itself in roughly 8 years in good sun, and longer on a shaded or vertical railing or with a lower electricity rate. There’s no federal tax credit in 2026: the 30% 25D credit ended for systems installed after December 31, 2025. A few states and utilities run their own programs, so check DSIRE and our home energy rebates guide, but don’t count on money for a plug-in kit.
Is balcony solar worth it?
It can be, for the right home. Balcony solar makes the most sense if you live in a state where it’s allowed, have a sunny south-facing balcony, patio or yard, pay a high electricity rate, and have a steady daytime base load. It also makes sense if you rent and can’t put panels on the roof, since the kit moves with you. It makes less sense in a shaded spot, with a low electricity rate, or if you hoped it would keep the lights on in a blackout. Think of it as a small, steady trim to your bill and a hands-on way to use clean energy, not a replacement for rooftop solar. A typical rooftop system is many times larger; see solar panels for home to compare.
Safety: certification, outlets and circuits
Plugging a power source into an outlet isn’t like plugging in a lamp, and UL Solutions has laid out why. In its white paper on plug-in systems, UL warns that current from the grid and the panel together can exceed what the circuit’s wires are rated for without tripping the breaker, because the breaker only “sees” the grid’s share. It also flags plug blades that could be live in sunlight if the system isn’t designed to prevent it, and possible problems with GFCI protection. In January 2026 UL Solutions launched a certification program for plug-in systems based on UL 3700, its outline for interactive plug-in solar equipment.
- Buy certified. State laws require a UL or equivalent lab listing; Maine and Vermont name UL 3700 (or an equivalent). Keep the certificate.
- Stay under your state’s limit and follow its rules (one device per meter or per outlet in several states).
- Use a sound outlet on a circuit that isn’t already loaded with heaters or other big appliances. Follow the maker’s instructions on extension cords. If your wiring is old or you’re unsure, have a licensed electrician check it; Maine requires a dedicated circuit installed by an electrician above 420 W.
- Mount it securely. Wind can catch a panel like a sail. Use the maker’s brackets, and keep panels from hanging over sidewalks or neighbors’ space. Vermont’s law requires devices to be securely attached.
- Never build your own plug-in rig from a generic inverter, or use a “suicide cord” (a male-to-male plug). That’s how people get hurt.
Renters, condos and HOAs
Balcony solar is often pitched to renters, and several laws address them. Vermont requires tenants to give the landlord 10 days’ notice; the landlord may set reasonable restrictions and must approve any electrical work. Virginia’s law, from 2027, stops landlords with more than four rental units from forbidding exterior installs. Colorado, from January 1, 2027, voids unreasonable bans by landlords, HOAs and covenants while allowing reasonable rules, and New Jersey’s governor says its law stops landlords and HOAs from broadly prohibiting the devices. Maine says renters must not compromise the building and must restore it when they remove the system. Everywhere else, get written permission and use clamp-on mounts that leave no holes. Our solar panels for renters guide covers the other options, including community solar.
How to set up balcony solar, step by step
- Check the law and your utility. Confirm your state’s status and any notice your utility needs, before you buy.
- Check the sun. Watch your balcony or patio for a day. Four or more hours of direct midday sun is a good sign; NREL PVWatts gives an estimate for your address.
- Check your base load from smart-meter data or a plug-in meter, and size the kit to it.
- Get permission from the landlord or HOA if needed, in writing.
- Buy a certified kit with the right mounts for your railing, wall or ground.
- Install and notify. Mount the panels, connect them to the inverter, plug in, and send any notice your state requires.
Which guide is for you?
| If you want to… | Read |
|---|---|
| Compare the plug-in kits sold in the U.S. | Best balcony solar kits |
| Know your state’s rules in detail | Is balcony solar legal in my state? |
| Store midday sun for the evening or an outage | Balcony solar with a battery |
| Find solar options as a renter | Solar panels for renters |
| Go off-grid with panels and a battery | Best solar generators and best portable solar panels |
| Compare with rooftop solar | Solar panels for home and net metering explained |
Balcony solar kits and alternatives
Prices change often. The prices below are what we saw at the maker or a major retailer in October 2026; check the current price before you buy.
EcoFlow STREAM Microinverter
- 1,200 W nominal at 120 V
- UL 1741, anti-islanding (maker)
- 10-year warranty
EcoFlow STREAM Ultra
- 1.92 kWh LFP, expandable to 11.52 kWh
- Up to 2,000 W solar input
- 6,000 cycles to 70% (maker)
Craftstrom 1200W Eco-Line Plug and Play Kit
- 1,200 W, 6 panels + 3 inverters
- Maker: up to 2,160 kWh a year
- About $2,250 (maker)
Jackery Solar Generator 1000 v2
- 1,070 Wh LiFePO4, 1,500 W AC
- 200 W SolarSaga panel included
- No grid connection
Anker SOLIX C1000 Gen 2 + 200W panel
- 1,024 Wh, 2,000 W AC
- Up to 600 W solar input
- 200 W panel included
1. EcoFlow STREAM Microinverter: best low-cost start
EcoFlow’s 120 V plug-in microinverter takes up to 1,200 W of panels (16 to 60 V, MC4 connectors) and puts out 1,200 W nominal. EcoFlow lists UL 1741 certification and anti-islanding, overcurrent and overvoltage protection, plus a 10-year warranty, for about $369. EcoFlow’s page says plug-in installation “is currently permitted in Utah, Maryland and Colorado,” and also says plug-and-play installation is only available in Utah under HB 340, so read the page for your state.
2. EcoFlow STREAM Ultra: best with a battery
The STREAM Ultra is a 1.92 kWh LFP battery with four solar inputs (up to 2,000 W), expandable to 11.52 kWh, rated for 6,000 cycles to 70% and under 30 dB. EcoFlow lists 1,200 W on-grid output with the microinverter (800 W on its own) and 1,200 W for backup. It stores noon sun for the evening, about $1,399 list. The same state statement applies as for the microinverter.
3. Craftstrom 1200W Eco-Line: complete kit with panels
Craftstrom sells a 1,200 W kit with six panels and three inverters for about $2,250 and says it can make up to 2,160 kWh a year. Two maker claims need care: Craftstrom says its kits are “legal in all 50 states,” which no state has said, and calls its inverters “UL certified” without naming the standard on the page we read. Ask the seller for the certificate, and follow your state law and utility.
4. Jackery Solar Generator 1000 v2: legal everywhere
If your state has no plug-in law, or you want outage backup, this pairs a 1,070 Wh LiFePO4 power station (1,500 W AC, 3,000 W surge) with a 200 W folding panel. It never connects to your home’s wiring. Jackery lists about 7.5 hours to recharge from the panel in full sun.
Check the Jackery Solar Generator 1000 v2 price on Amazon
5. Anker SOLIX C1000 Gen 2 with 200W panel: most output off-grid
Anker’s 1,024 Wh station delivers 2,000 W (3,000 W surge), takes up to 600 W of solar, so you can add panels later, and recharges from the wall in 49 minutes in its fast mode. The bundle includes a 200 W panel.
Check the Anker SOLIX C1000 Gen 2 + 200W panel price on Amazon
Keep exploring: start with the state-by-state legal guide, compare the best balcony solar kits, and see how storage works in balcony solar with a battery. For backup, read our portable power stations and home battery backup hubs. Learn how solar energy and electrical energy work, why it counts as clean energy, and browse all our solar articles.
Balcony solar questions
Can I just plug a solar panel into my wall outlet?
Only with a certified plug-in kit, in a state whose law allows it or with your utility’s written approval. A plain solar panel can’t plug into an outlet at all; it needs a grid-tied microinverter with anti-islanding. Never build your own rig from generic parts or a male-to-male cord.
Does balcony solar work during a power outage?
A basic plug-in kit doesn’t: its inverter must shut off when the grid fails, to protect line workers. Kits with their own battery and outlets, such as the EcoFlow STREAM Ultra, can power devices plugged directly into them. For reliable outage power, a portable power station is the simpler choice.
How much can balcony solar save on my electric bill?
By our estimate, about $90 a year for 400 W up to about $275 for 1,200 W in good sun at the July 2026 U.S. average rate, if your home uses all the power as it’s made. Shade, vertical mounting and lower rates reduce that; power sent to the grid usually earns nothing.
Which states allow balcony solar?
As of October 2, 2026: Utah, Maryland, Maine, Vermont, Colorado and Connecticut have laws in force; Virginia, New Hampshire, New Jersey and California have signed laws that start later or wait on standards; New York’s bill awaits the governor. Our legal guide has the details.
Do I need an electrician for balcony solar?
Usually not for a small certified kit on a sound outlet. Maine requires a licensed electrician and a dedicated circuit above 420 W. If your wiring is old, the circuit already carries big loads, or you’re unsure, have a licensed electrician check it first.
Can I take balcony solar with me when I move?
Yes, that’s one of its best features. The panels unclip, the inverter unplugs, and the kit goes with you. Check the rules in your new state and with your new utility and landlord before plugging it in again.