Plug-in solar is legal in these 10 states now – how it could save you money

Plug-in solar, also called backyard solar, is a small, plug-and-play energy system. It usually includes one or more solar panels, an inverter, and a battery. The setup matters because it offers a simpler way for households to use solar power and potentially reduce electricity purchases.

The system connects to a home's standard 120-volt outlet. Solar panels generate electricity, while the battery stores it. The inverter then sends that electricity through the outlet and toward the nearest appliance that is running. The appliance can draw power from both the solar system and the utility supply.

This approach is already legal in ten states, according to the article. However, many states still restrict it because their electrical systems and regulations were designed for professionally installed rooftop solar. Even after legalization, landlords or HOAs may still impose separate restrictions.

Ten states have already legalized backyard and plug-in solar systems for consumer use. That means residents in those states can purchase and install systems such as EcoFlow Stream, subject to other restrictions that may apply to their homes. The legal shift is significant because plug-in solar has traditionally faced utility and electrical-code barriers.

About two dozen additional states are working through legalization. The article’s key takeaway identifies 24 other states with legislation that is stalled but still being worked on. Some bills are moving, too. Massachusetts has advancing balcony-solar bills, while New York’s SUNNY Act is pending governor approval.

The process is uneven. Bills in Michigan, Ohio, Pennsylvania, Rhode Island, South Carolina, and Washington, DC, have reached committee hearings. Bills in 12 other states have stalled until 2027, while proposals failed in Georgia, New Mexico, Oregon, Washington, and Wyoming.

Plug-in solar can reduce a household’s electricity bill by supplying some of the power its appliances use. When solar-generated electricity comes from the system’s battery, the home may need to purchase less electricity from the local utility. That lower consumption is the basic path to savings.

The system connects through a standard 120-volt outlet and automatically routes electricity from the battery to the nearest running appliance. The appliance can therefore use energy supplied by the solar inverter and battery rather than relying entirely on power supplied by the utility. The article describes these systems as easy to set up and capable of saving consumers money.

The size of any savings is not given in the article. It depends on the household’s situation and the system’s use. Legalization also does not guarantee installation, because landlords or HOAs may still block a project even when utilities cannot.

Plug-in solar has traditionally been illegal or restricted because conventional American home electrical systems were not designed to receive power from a standard wall outlet. Rooftop solar follows a professional installation path through the electrical panel. Plug-in systems introduce electricity directly into an outlet instead.

That difference can create a wiring concern. Nearby appliances may draw power supplied by both the breaker and the solar inverter. The wiring could then carry more current than the breaker alone would allow before it trips. The article identifies this as a safety issue, but says safety is not the only reason for restrictions.

Utilities are another major obstacle. Their rules were written for rooftop solar, not plug-and-play systems. Utilities also may earn less when households buy less electricity, while still needing to support grid costs. New legislation is intended to address those regulatory barriers.

A plug-in solar system can create a current risk because it feeds electricity into a home through a standard outlet. Traditional wiring expects electricity to enter through the electrical panel and circuit breakers. Plug-in solar instead introduces power downstream, where the home’s wiring was not designed to receive it.

The article gives a specific mechanism. A nearby appliance may draw energy from the utility through the breaker and from the solar inverter at the same time. Together, those sources could make the wiring carry more current than the breaker alone would allow before it trips. That creates a potential safety concern.

The article does not describe a particular accident or quantify the risk. It also says safety is not the only issue behind restrictions. Utility regulations, grid costs, and concerns about reduced electricity purchases have helped make utilities a major regulatory obstacle.

Legalization does not automatically give every homeowner permission to install plug-in solar. The bills described in the article mainly focus on preventing utility companies from blocking these projects. They do not generally override private rules tied to the property where the system would be installed.

A landlord can still prohibit a tenant’s setup. A homeowners association, or HOA, can also maintain a ban or restriction. This matters because state approval and permission to use a particular home are separate issues. A resident may live in a state where the technology is legal but still be unable to install it.

Some states have introduced supplementary bills that would add protections for HOAs and landlords. The article does not say those protections apply everywhere or have passed. Homeowners and tenants therefore need to consider both state law and property-specific rules before setting up balcony or backyard solar.

Professionally installed rooftop solar is designed around a home’s electrical panel. The energy harvested by rooftop panels flows through a circuit breaker before reaching the home’s outlets. This arrangement matches the way traditional American home wiring is designed to receive and distribute electricity.

Plug-in solar uses a different path. Its panels, inverter, and battery connect to a standard 120-volt outlet. The system introduces electricity directly into that outlet instead of routing it through the electrical panel first. Nearby appliances can then draw power supplied by both the breaker and the solar inverter.

That distinction helps explain the legal restrictions surrounding plug-in systems. The article says the wiring could carry more current than the breaker alone would allow before it trips. It also notes that utility rules were created for rooftop solar, leaving legislation to establish a pathway for plug-and-play systems.