You might soon or even already be able to generate small amounts of solar power fairly easily, depending on where you live.  Plug-and-play solar systems known as Balcony Solar are already popular in Europe, and pressure is growing for the US to catch up - and for good reason.  Utah and then Maine were the first US states to pass laws allowing residents to install plug-in, or balcony, solar systems.  According to the nonprofit Solar United Neighbors, over 20 million US households could benefit from this technology. 

Solar United keeps a map of states that have “cut the red tape” to allow balcony solar. As of the publishing of this article, Colorado and Virginia joined Utah and Maine, and 30 other states have active efforts to consider or pass balcony solar-related legislation.    https://solarunitedneighbors.org/resources/what-to-know-about-plug-in-solar/       

What is Balcony Solar?

A balcony/plug-in system is basically a plug-and-play solar set up or an easy-to-install kit that plugs into an outlet. Instead of drawing power like other appliances, balcony solar systems contribute power to be used in other parts of a home.  A consumer can literally walk into the hardware store, buy the unit, and go home and plug it in.  These systems are designed to avoid permitting and professional installation requirements, as long as local laws permit the systems.  The balcony name comes from the fact that many renters in European apartments installed them on their balconies.  The equipment usually consists of:

• 1-2 solar panels, though more are possible

• a grid-tied microinverter that connects the panels to a standard plug or battery, with anti-islanding protection (meaning it shuts off if the grid is down, to prevent potentially dangerous power backflow that can endanger utility workers), and 

• a plug connection to a household circuit (rules for this connection vary by country/state). 

Balcony solar systems generate 200-1600 watts, though output limits are set by different states and countries. For comparison, a typical home rooftop solar installation might range between 3,000 and 9,000 watts.  Rooftop solar systems provide more power and return, but they are more complex and costly to set up, often costing $20,000 or more.  These systems can offset the energy used by smaller household loads such as phones, laptops and other electronics, lighting, televisions, networking equipment, fans, and smaller kitchen appliances like slow cookers and instant pots.  Balcony solar units are not sufficient to power large heat-generating appliances such as HVAC equipment, dryers or power tools.  With batteries, more power can be supplied and items like CPAPs and medical equipment can be powered through the night.  

Balcony solar systems generally cost between $1200 and $2000 in the US and can lower electric bills by several hundred dollars per year, about $385 per year according to Solar United Neighbors.  The average payback seems to range from about 3 to 8 years, but the ROI really depends on many factors including the local cost of electricity and the intensity and availability of sunlight in a particular location.  The Clean Energy States Alliance has created a Balcony Solar ROI Worksheet for use in calculating the return for a specific home.  

The benefits of balcony start right up front with ease of installation and affordability.  Anyone can install these units, and they’re more affordable than more complex solar systems.  Balcony solar will also decrease in cost as more states pass laws to allow the technology and as more manufacturers then enter the market with competitive products.  In Germany, the current cost of a balcony system is about 500 euros (approximately $550). And, the cost of balcony solar power already seems to be falling based on the Utah example.  Previously typically quoted at about $3 per watt, equivalent to rooftop units in the US,  balcony solar costs in Utah were reported in May, 2026 at $2.30 per watt before any available incentives.  Nonprofit and balcony solar advocacy organization Bright Saver predicts that the cost will fall to .50 per watt within 2 years after the 5th state passes balcony solar legislation, and that the average payback period will fall to 3 years by 2032. 
 

Key balcony solar benefits include:

• Affordability. These units are a good entry level to solar and clean energy, and they’re less expensive than rooftop solar. 

• They’re easy to install - anyone can plug balcony solar in, no technical expertise or permits are required. 

• Inclusivity and applicable fairly widely.  Examples:

  • Renters can install balcony solar - you don’t have to own a property to plug the units in. And when you move, the system unplugs and can come with you. 

  • The units are easy to set up and use in rural areas.

  • The portable, moveable systems also happen to work well for recreational vehicles

  • Balcony solar can make a difference especially where there are power outages frequently.  Add batteries and the systems can provide more power and over more time.

• Resilience and a step towards less energy dependence. Balcony solar starts making a difference right away, and the effects can be amplified when combined with battery storage. Plug-in solar can even be used as a second system to expand solar output for homes with rooftop solar.  

• Energy savings. Balcony solar users can save several hundred dollars per year on energy bills, though the exact amount and ROI vary by several factors. Savings will certainly grow as energy prices continue to increase, and as balcony solar costs decrease.  

• Satisfaction, and a source of pride.

  • Balcony solar users have reported that they feel they are taking action to be more sustainable 

  • Balcony solar users can also geek out and feel like expert DIYers. Why not push the limits to see how much more a solar panel can generate if it is mounted on a base to track the sun, or used to generate shade?

Balcony solar isn’t a replacement for rooftop solar, but more an alternative for when rooftop solar isn’t possible or practical, but onsite unlike community solar which still allows some clean energy participation.  For one thing, a renter can’t bring in an electrician and affix solar to the homeowner’s roof.  The price point is also just lower, for the equipment and also without expensive installations, utility permissions, and permitting.  So balcony solar can bring clean energy to whole new groups of people who would not have had the option previously.  Apparently, between 5% and 7% of US households have rooftop solar.  Balcony solar can help those people who want to have solar who have been prevented by other factors, including costs and home ownership. 

  Clean Energy States Alliance

Where is Balcony Solar already popular, and why?

Balcony solar isn’t new, as it’s been available in Europe for over a decade and has really taken off more recently.  In just about four years, balcony solar ramped from thousands of units installed to over 5 million, with about 4 million of those in Germany alone.  Plug-in solar is legal in all EU Member States except in Sweden and Hungary, as well as in Switzerland. Many countries require notification as to installation, but self reporting compliance has apparently not been high.  Output exports are limited to 600 or 800 watts, though units and storage can be larger as long as they don’t export past set limits.    

Germany has led the European expansion story, and two pieces of legislation are key to the story.  In 2019, Germany exempted balcony solar systems from interconnection agreements, which created a new legal definition for the systems and lowered the requirements between the system owner and utilities for solar systems below a set wattage threshold. Without additional permissions, the units could now use standard plugs and feed energy back into the grid. The door was pushed open even more in 2024 when German legislators passed protections for renters from landlords to install balcony solar systems. Exponential growth followed in Germany, with similar patterns reported in the Netherlands and Austria.   

High electricity prices and taxes along with increasing energy prices all played significant roles in this adoption, as did decreasing systems prices.  Several German cities have offered subsidies to increase adoption even more widely.  As a result of all of these factors, current German households with solar are reported at 10%, and payback is apparently often under 3 years. 

There are also political and cultural differences that likely made European adoption earlier and faster. The applicable rules are national, not local, and distributed, clean energy has greater support.  People interviewed about balcony solar seem excited and proud and not shy about their systems. They talk about being able to take climate action and be energy independent in ways that might be as popular in the United States right now.

 

Balcony Solar in the US
 

US balcony solar adoption began with Utah, where State Representative Raymond Ward had heard about the balcony solar trend in Germany and wanted a system for himself.  Only it wasn’t legal to have one as U.S. electrical regulations were designed to address larger, permanent rooftop systems. Under previous laws, plugging a panel directly into a wall outlet was technically illegal because it violated the interconnection rules that determine how renewable energy systems physically connect to the electric grid. The rules prescribe who can work on systems, as well as the process and permits/permissions required. Among other rules, state law mandated that if a solar system generated and sent any power back into the electrical grid, there had to be a formal contract with their utility company. This red tape meant that it really wasn’t worth investing the time and money required in these systems which likely weren’t going to send much power back to the grid since the small amounts of power would likely be consumed rather quickly on site. 

After collaborating with leading solar nonprofits and bringing utilities into the conversation up front, Representative Ward introduced HB 340 in January, 2025, which passed in March 2025 and was the first state law to allow portable solar power systems to connect directly to 120V outlets without interconnection applications or utility fees. A limit was set of up to 1,200 watts, and units had to meet NEC (National Electrical Code guidelines) and UL certification standards.  In January, UL released UL3700, a testing protocol or “outline of investigation” for certifying balcony solar systems.  UL can certify a plug-in solar system to UL 3700, but eventually a  UL standard for plug-in solar,resulting from a consensus-based process with stakeholders will have to be developed. Credit goes to everyone involved, to Representative Ward for his recognition of a needed change and willingness to act, for all the advocates, and also to the local utilities for not seeing the small amounts of power potentially generated as an energy,  safety or business threat. The utilities did ask for a release from related liability, and in this new and unfamiliar situation, that seems pretty sensible. 

Factors inhibiting balcony solar growth in the US

Balcony solar seems destined to grow exponentially in the US in the next years, but some concerns and barriers to growth remain.  Some great news is that the previous decade of European growth really does leave a solid track record. 

As far as safety goes, three main concerns appear frequently in literature related to balcony solar:

• Touch Safety: The prongs in a disconnected plug could still carry power in theory to shock an occupant, since solar panels can still be producing energy. A special outlet could resolve this problem and may be in development. Dedicated circuits may also be part of this resolution.   

• Islanding and Line Worker Danger:  In a situation where a home pushes power to power lines during an outage, the electrocution risk to repair workers.  However, this risk seems solved by the anti-islanding mechanisms which stop the unit from producing power and sending it to the grid as soon as power shuts down. 

• Circuit Overloads:  There is some concern that existing circuits were designed for energy to flow in one direction and that breakers might not recognize overloads and trip properly.  Risks could include overheating and fires. 

Additional safety concerns could fairly be centered around ensuring quality in a new ara of technology, though balcony solar already does have a solid track record. Improperly or installed or modified systems are something to watch out for, which is one reason it’s better to approve and test the packaged systems or kits which don’t require customization. 

Resistance to change is also a factor, and it can take different forms.  Landlords and homeowner associations (HOAs) may not wish to allow balcony solar if it doesn’t match their aesthetic.  Laws can protect renters, but it seems likely there are some related battles ahead. For one thing, there can be a safety argument and liability concern with tenants securing their own equipment to the outside of a building they don’t own or maintain.  

The political environment is also clearly different in the US, but it’s a positive sign that so many states are considering balcony solar legislation and that four states now have already done so.  There’s also the practical consideration of how different states and utilities and local officials see and implement rules differently.  

 

Looking forward:

Will resilience and energy independence, and some savings along the way, deliver the win for balcony solar? Though there may be skirmishes, it appears that balcony solar will also soon be wildly popular in the US.  Energy prices are not going to decrease, and outages and larger climate emergencies will continue to encourage resilience and independence, if not a unified call for energy efficiency and sustainability for future generations.  Politically, it may take some time, and reasons for support will vary, but the results can be some impactful win-wins, and balcony solar will hopefully evolve into a successful and impactful part of the decarbonization process and transition to more inclusive, cleaner and healthier energy systems and economy. According to Cora Stryker of Bright Saver, the future is indeed promising - Bright Saver estimates that 60 million people, or 1 in 6 Americans, will use a plug-in solar system by 2035*. 

*Assuming a minimum adoption of balcony solar laws by 5 states. 

Resources: 

Balcony Solar Guide - Solar United Neighbors

What states need to know about plug-in solar, a Clean Energy States Alliance Guidebook

Balcony Solar ROI Worksheet (from the above guide)

Balcony Solar map -  Solar United Neighbors

Balcony Solar map - Canary media 

 To support balcony solar:

Join Solar United Neighbors’ Advocacy Campaign

Additional information about Balcony Solar/Sources:

MassCEC recorded a helpful introductory webinar about balcony solar and the related political landscape:

MassCEC Thoughtful Climate Live Interview Series: Balcony Solar & DIY Clean Energy - Mass Clean Energy Center (MassCEC) December, 2025

How balcony solar can help renters and homeowners save money - theConversation.com, May, 2026

States Weigh Bills to Allow You to Make Your Own Electricity - New York Times, February, 2026

UL Solutions Debuts Testing and Certification Framework for Safer Plug-In Solar Across the United States - January, 2026 

A guidebook on plug-in solar for state-level policymakers, pv magazine, January, 2026 

Solar, minus the red tape: plug-in solar could bring affordable energy to millions- Solar United Neighbors, January, 2026

Balcony solar is all the rage in Germany. Why not in the US? - Canary, Media, May, 2025

What's the deal with balcony solar? Volts, November, 2025

How Germany outfitted half a million balconies with solar panels - Canary Media, September, 2024

Democratizing Solar: How Plug-In Solar Expands Energy Affordability and Resilience for 60 Million Americans,” - Bright Saver, October, 2025
Balcony solar gains unanimous bipartisan support in Utah - PV Magazine, March, 2025

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• Keywords : Solar, Renewable Energy, Balcony Solar, Plug-in Solar

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