Solar Waypoint Guide · Plug-In Solar
Where Is Plug-In Solar Legal? State-by-State Guide (2026)
See which states have plug-in solar laws in effect, which laws start later, and what power, electrical, certification, and utility rules may apply.
Plug-in solar is becoming a real option in more parts of the U.S., but the rules still depend heavily on where you live.
Six states now have special plug-in solar pathways in effect. Three more have signed laws that take effect later, while California and New York have bills waiting for final governor action.
These laws can let small, qualifying solar systems avoid much of the normal utility interconnection process used for rooftop solar. The details still vary by state, including power limits, electrical requirements, utility notification, and product certification.
Current U.S. snapshot
Plug-in solar pathways are currently in effect in Utah, Maine, Colorado, Maryland, New Hampshire, and Vermont. Connecticut joins them October 1, 2026. Virginia follows January 1, 2027, and New Jersey on March 1, 2027.
What Do We Mean by “Legal”?
For this guide, we are tracking states that have created a specific, simplified pathway for plug-in solar. A qualifying system in one of these states can generally avoid the normal interconnection agreement and utility approval process used for larger grid-connected solar systems.
States without one of these laws may still allow small solar systems through their regular electrical, permitting, and utility rules. We label those states “no special pathway identified” rather than calling plug-in solar illegal.
State law is only the first check
A state may allow plug-in solar while still requiring the inverter or complete system to meet specific safety and electrical standards. The law and the exact product both matter when deciding whether a system fits your location.
States With Plug-In Solar Laws in Effect
Utah
Utah became the first state to create a statewide plug-in solar pathway. The law covers portable solar generation devices with up to 1,200 watts of output that connect through a standard 120V AC outlet.
Qualifying devices must meet applicable electrical standards and be certified by UL or another nationally recognized testing laboratory. They are exempt from the normal interconnection agreement and net-metering requirements, and utilities cannot require approval before installation or use.
Utah’s law took effect May 7, 2025. For buyers, it remains one of the simpler plug-in solar frameworks in the country.
Maine
Maine allows both plug-in photovoltaic systems and plug-in battery systems, which makes its law especially interesting as battery-equipped products reach the U.S.
The state uses two power tiers. Systems with combined inverter output of 420 watts or less use the simpler pathway. Systems above 420W and up to 1,200W must be installed by a Maine-licensed electrician and use a dedicated circuit with a single outlet.
For systems above 420W, the customer must also notify the utility within 30 days after installation. Anyone shopping in Maine should pay close attention to inverter output because moving above 420W changes the installation requirements substantially.
Colorado
Colorado has the highest power limit among the states with active plug-in solar laws. A qualifying portable-scale solar device can supply up to 1,920 watts.
The equipment must be listed and labeled by a nationally recognized testing laboratory and include protection that prevents it from energizing the grid during an outage. Utilities cannot require prior approval or extra utility-specified equipment, although they can require customers to report the presence and size of a system.
Systems rated at 391W or less also receive additional exemptions from certain wiring and installation requirements. Colorado’s main plug-in solar provisions took effect August 12, 2026, while some sales and property provisions begin January 1, 2027.
Maryland
Maryland allows one qualifying portable solar system per electric meter for residential use, with a maximum output of 1,200 watts.
The system does not go through the state’s normal net-metering and interconnection process. Customers do need to notify their electric company before installation and provide information about the system’s safety certification and maximum generating capacity.
The utility notification is not a traditional approval process. Maryland’s Public Service Commission now provides balcony-solar information and utility contacts for customers. Systems rated at 391W or less also receive a limited exemption from some product-listing requirements that could otherwise require changes to the home’s wiring or electrical panel.
New Hampshire
New Hampshire’s plug-in solar pathway took effect July 2, 2026. Each metered customer may use one qualifying plug-in solar generation system with up to 1,200 watts of AC inverter output.
The law exempts compliant systems from utility approval, interconnection review, interconnection agreements, related fees, and additional utility-required equipment. Utilities may establish a process for customers to report the system’s wattage after installation, but that reporting does not become an approval process.
One building-code section of Chapter 262 has a separate conditional effective date. The general plug-in solar pathway is already in effect.
Vermont
Vermont allows one or more plug-in photovoltaic devices with up to 1,200 watts of combined inverter capacity per electric meter.
The system must use a compatible smart meter. Qualifying systems do not need a traditional interconnection agreement or Public Utility Commission approval.
Vermont also requires appropriate safety certification, including UL 3700 or an equivalent standard. Plug-in systems are not eligible for net metering, and excess electricity sent to the grid is generally uncompensated under the simplified pathway. The law took effect July 1, 2026.
States With Laws Taking Effect Later
Connecticut: October 1, 2026
Connecticut has enacted its portable solar rules, but the relevant provisions begin October 1, 2026.
The law covers portable photovoltaic devices with up to 1,200 watts of output connected through a standard 120V outlet behind the customer’s meter. Qualifying devices are exempt from normal utility interconnection agreements, and utilities cannot require prior approval, fees, or additional controls beyond those allowed by the law.
State building, electrical, fire, and applicable local requirements can still apply.
Virginia: January 1, 2027
Virginia’s main plug-in solar provisions take effect January 1, 2027. The law allows qualifying devices with up to 1,200 watts of output per customer, or per residential unit in multifamily housing.
Qualifying systems are exempt from ordinary utility interconnection requirements and prior utility approval. The State Corporation Commission is also directed to provide a customer notification process.
Devices rated at 391W or less receive a limited exemption from listing provisions that would otherwise require changes to the building’s wiring or electrical panel.
New Jersey: March 1, 2027
New Jersey Gov. Mikie Sherrill signed the Garden State Balcony Solar Act on September 1, 2026. It takes effect six months later, on March 1, 2027.
The law covers portable solar devices with up to 1,200 watts of output connected through a standard 120V outlet. It also requires UL 3700, a comparable safety standard, or an acceptable combination of nationally recognized standards.
New Jersey also includes protections for renters, condo owners, and people living under HOA rules. Systems at 400W or less receive an additional electrical-code carveout in some situations.
California and New York Are Still Pending
California
California’s SB 868, the Plug and Play Solar Act, has passed the Legislature. The official state record still lists it as an active enrolled bill at the governor’s office as of September 8, 2026.
The bill was presented to the governor on August 31. If enacted in its current form, it would create a simplified pathway for qualifying portable solar systems with up to 1,200 watts of output.
California remains in our pending category until the governor takes final action.
New York
New York’s SUNNY Act has also passed both legislative chambers. The bill would create a category for portable solar generation devices with up to 1,200 watts of output and remove ordinary utility interconnection requirements for qualifying systems.
The official legislative record still lists the measure at the passed-Senate-and-Assembly stage. We will move New York into the enacted category when a dated governor action appears.
Plug-In Solar Status in All 50 States
This table tracks whether a state has created a special plug-in solar pathway. It does not attempt to classify every small solar installation that might be possible under ordinary utility, permitting, or electrical rules.
| State | Status as of Sept. 8, 2026 |
|---|---|
| Alabama | No special plug-in solar pathway identified |
| Alaska | 2026 bill activity; no special pathway in effect |
| Arizona | 2026 bill activity; no special pathway in effect |
| Arkansas | No special plug-in solar pathway identified |
| California | Passed Legislature; awaiting governor action |
| Colorado | Special pathway effective now |
| Connecticut | Enacted; effective Oct. 1, 2026 |
| Delaware | 2026 bill activity; no special pathway in effect |
| Florida | No special plug-in solar pathway identified |
| Georgia | 2026 bill activity; no special pathway in effect |
| Hawaii | 2026 bill activity; no special pathway in effect |
| Idaho | 2026 bill activity; no special pathway in effect |
| Illinois | Plug-in solar legislation introduced; no special pathway in effect |
| Indiana | 2026 bill activity; no special pathway in effect |
| Iowa | 2026 bill activity; no special pathway in effect |
| Kansas | No special plug-in solar pathway identified |
| Kentucky | No special plug-in solar pathway identified |
| Louisiana | No special plug-in solar pathway identified |
| Maine | Special pathway effective now |
| Maryland | Special pathway effective now |
| Massachusetts | 2026 plug-in solar provisions considered; no special pathway in effect |
| Michigan | Plug-in solar bill introduced; no special pathway in effect |
| Minnesota | 2026 plug-in solar legislation considered; no special pathway in effect |
| Mississippi | No special plug-in solar pathway identified |
| Missouri | 2026 bill activity; no special pathway in effect |
| Montana | No special plug-in solar pathway identified |
| Nebraska | No special plug-in solar pathway identified |
| Nevada | No special plug-in solar pathway identified |
| New Hampshire | Special pathway effective now |
| New Jersey | Enacted; effective Mar. 1, 2027 |
| New Mexico | 2026 bill activity; no special pathway in effect |
| New York | Passed Legislature; awaiting governor action |
| North Carolina | Plug-in solar bill introduced; no special pathway in effect |
| North Dakota | No special plug-in solar pathway identified |
| Ohio | Plug-in solar legislation introduced; no special pathway in effect |
| Oklahoma | 2026 bill passed the House; no special pathway in effect |
| Oregon | 2026 bill activity; no special pathway in effect |
| Pennsylvania | Plug-in solar bill introduced; no special pathway in effect |
| Rhode Island | 2026 bill passed the House; no special pathway in effect |
| South Carolina | Plug-in solar bill introduced; no special pathway in effect |
| South Dakota | No special plug-in solar pathway identified |
| Tennessee | No special plug-in solar pathway identified |
| Texas | No special plug-in solar pathway identified |
| Utah | Special pathway effective now |
| Vermont | Special pathway effective now |
| Virginia | Enacted; effective Jan. 1, 2027 |
| Washington | 2026 bill activity; no special pathway in effect |
| West Virginia | No special plug-in solar pathway identified |
| Wisconsin | No special plug-in solar pathway identified |
| Wyoming | 2026 bill activity; no special pathway in effect |
Washington, D.C. also had plug-in solar legislation introduced in 2026. No special pathway is currently in effect there.
Power Limits Vary by State
Most enacted laws use a maximum output of 1,200 watts, but there are important exceptions. Colorado allows up to 1,920W, while Maine uses a 420W threshold inside its larger 1,200W limit.
Several states also give lower-output systems special treatment. Colorado and Maryland use a 391W threshold, while New Jersey uses 400W.
What this means when shopping
Check the grid-connected AC inverter output, not just the wattage printed on the solar panels or product bundle. That inverter rating is often the number that determines which state rules apply.
Utility Approval and Notification
One of the main goals of these laws is to remove the traditional utility approval process for small qualifying systems. Some states still require customers to tell the utility about the system.
| State | Utility / installation rule |
|---|---|
| Utah | No routine prior utility approval under the simplified pathway. |
| Maine | Systems above 420W require a licensed electrician, dedicated circuit, and utility notification within 30 days after installation. |
| Colorado | Utilities may require customers to report the presence and size of the system. This is not prior approval. |
| Maryland | Customer notifies the electric company before installation and provides certification and maximum-capacity information. |
| New Hampshire | Utilities may establish a post-install wattage-notification method. |
| Vermont | No normal interconnection agreement, but a compatible smart meter is required. |
The amount of work can therefore range from very little paperwork to an electrician, dedicated circuit, and utility notification depending on the state and the size of the system.
Product Certification Still Matters
State law is only one part of the buying decision. Plug-in solar laws generally require equipment to meet national electrical and safety standards.
Depending on the state and product, those requirements can involve standards such as UL 3700, UL 1741, IEEE 1547, the National Electrical Code, or equivalent testing by a nationally recognized laboratory.
Certification scope matters
A certified microinverter does not automatically prove that every panel, cable, connector, and accessory sold with it has been evaluated as a complete plug-in solar system. We check the state requirements and the exact product separately when reviewing U.S. systems.
Our U.S. plug-in solar systems guide looks at the products themselves, including what we can verify about their certification and market fit.
What If Your State Does Not Have a Special Pathway?
You may still be able to install a small grid-connected solar system through your utility’s normal interconnection process. You can also use solar panels with a portable power station or other off-grid battery without feeding electricity into the home’s wiring.
If your goal is true plug-in grid-connected solar, check your utility and local electrical rules before buying hardware. Several states considered legislation in 2026, so this map is likely to keep changing.
Do not improvise a grid connection
A normal portable power station or off-grid inverter should never be connected backward into a household outlet. Grid-connected plug-in solar requires equipment designed for synchronization, current control, anti-islanding, and the other protections needed to operate alongside the utility grid.
Before You Install Plug-In Solar
If your state has an active pathway, work through these checks before ordering a system:
- Confirm that the law is already in effect.
- Check the maximum grid-connected inverter output.
- See whether your system size triggers an electrician or dedicated-circuit requirement.
- Verify the certification of the exact product or complete system.
- Check whether utility notification is required and when it must be completed.
- Confirm that the equipment is designed for the U.S. 120V electrical system.
- Review renter, landlord, HOA, or property rules if they apply to you.
- Understand how the system behaves during a utility outage.
A few minutes spent checking these details can prevent you from buying a system that does not fit the rules where you live.
Bottom line
Nine states have already signed dedicated plug-in solar laws, and six of those pathways are in effect today. Connecticut joins them in October 2026, followed by Virginia and New Jersey in 2027. California and New York could expand the market further if their pending bills become law.
The state map tells you where to start. The next step is finding hardware that fits your state’s power limit, electrical rules, and certification requirements.
Primary references
Sources & Method
We track legislation through state legislatures, enacted acts, public utility commissions, and other primary government sources. Manufacturer or advocacy summaries are used for context, not as a replacement for the underlying law.
- Utah Legislature — HB 340
- Maine Legislature — LD 1730 / enacted text
- Colorado General Assembly — HB26-1007
- Maryland Public Service Commission — Balcony Solar
- New Hampshire General Court — SB 540 / Chapter 262
- Vermont Legislature — Act 149
- Connecticut General Assembly — HB 5340 / Public Act 26-127
- Virginia General Assembly — HB 395
- New Jersey Legislature — Garden State Balcony Solar Act
- California Legislature — SB 868 status
- New York State Senate — SUNNY Act
- UL Solutions — UL 3700 plug-in solar framework
Article history
Update History
September 8, 2026: Initial publication with a 50-state review of current plug-in solar laws, enacted future laws, pending legislation, power limits, and utility requirements.