Plug-in Solar in Utah: The Pioneer State's Complete Guide

Utah Is the Plug-in Solar Pioneer

In March 2025, Utah became the first state to explicitly legalize plug-in solar when Governor Spencer Cox signed HB 340. Nearly a year later, Utah remains the only state with plug-in solar as settled law.

More importantly, Utah is showing the rest of America how this can work. HB 340 is a clean, simple law that permits plug-in solar systems up to 1,200 watts without utility approval, interconnection agreements, or permitting. Residents can just install and operate. The technology works, people use it safely, and the grid doesn't catch fire. Utah is the proof of concept.

HB 340: What You Can Actually Do Right Now

HB 340 explicitly permits customers of Utah utilities to install plug-in solar systems without obtaining approval from the utility. The law covers systems from zero to 1,200 watts.

Here's what this means in practice:

• You can install a 1,200-watt system on a balcony, patio, or temporary rack anywhere at your property
• You do not need to notify your utility beforehand
• You do not need to sign an interconnection agreement
• You do not need any permit or inspection
• Your utility must accept the power flowing back into the grid
• You get net metering (one-to-one credit for excess power)

This is the most straightforward plug-in solar law in the nation.

Why HB 340 Is So Clean

HB 340 works because it's aligned with how plug-in solar actually operates. A 120V/15A outlet can safely handle about 1,200 watts. The law sets the limit at 1,200 watts, which is exactly the practical engineering limit.

By not requiring utility approval or interconnection, HB 340 recognizes that a small plug-in system feeding power into a standard household outlet is fundamentally different from a large rooftop installation tied into the main electrical panel. Utilities don't need pre-approval because there's no risk from a 1,200W system pulling power from a standard outlet.

UL 3700 certification wasn't available when HB 340 passed (it launched in January 2026), but the law was written to be compatible with it. Once products are UL 3700-certified, they'll clearly meet HB 340's intent.

Utah's Sunshine and Geography

Utah averages 5 to 5.5 peak sun hours per day in most populated areas, rivaling California. Salt Lake City, Provo, Ogden, and most of the Wasatch Front get consistent, strong sun.

Desert regions (southern Utah: St. George, Moab) get 6+ peak sun hours—exceptional.

Northern and mountain regions get slightly less due to elevation and cloud patterns, but still above 4.5 peak sun hours.

A 1,200-watt system in Salt Lake City generates about 1,800 to 2,000 kWh per year—excellent output.

Electricity Rates and Payback

Utah's electricity is cheap: about $0.13 per kWh on average. This is among the lowest in the US, mainly because the state has access to hydropower and coal.

A 1,200-watt system generating 1,800 to 2,000 kWh per year in Utah produces about $234 to $260 per year in electricity value.

On the surface, this means a $1,200 system takes 4.5 to 5 years to pay back. But factor in the federal 30 percent tax credit (making your actual cost $840), and payback drops to 3 to 3.5 years.

For a technology that lasts 25 years with minimal maintenance, this is viable economics.

Current Utah Products: EcoFlow's Early Lead

EcoFlow, a major battery and power company, has been the early mover in Utah. They're selling multiple plug-in solar models, from small 400-watt systems to larger 1,200-watt setups.

EcoFlow's advantages:

• Strong brand recognition and customer service
• Products designed for off-grid/portable use (reliable for temporary deployments)
• Integration with EcoFlow's battery products (if you want to add storage)
• Pricing: approximately $1,000 to $1,500 for a full system

EcoFlow's limitations:

• Products aren't yet UL 3700-certified (expected mid-2026)
• Premium pricing compared to some competitors
• Limited product variants

Other manufacturers are watching Utah and preparing to enter. Craftstrom, Bright Saver, and international brands will likely expand to Utah once UL 3700 certification arrives.

Utah's Net Metering Rules

Utah's major utilities (Rocky Mountain Power, PacifiCorp, smaller municipals) have favorable net metering terms. Excess power pushed to the grid earns a one-to-one credit.

This is true for both rooftop and plug-in solar. HB 340 ensures plug-in systems have net metering rights.

The HOA Question in Utah

Utah has many HOA communities. HB 340 doesn't explicitly address HOA restrictions, but the law's language is broad: customers can install plug-in solar systems.

If an HOA tries to block balcony solar after HB 340, the homeowner has legal standing to challenge the restriction. Utah's courts would likely find that HB 340's authorization trumps HOA bylaws.

For renters and apartment dwellers in Utah, HB 340 doesn't explicitly protect against landlord restrictions. But since plug-in solar is now legal statewide and utilities accept it, landlords' ability to prohibit it is weakening.

Renter Access in Utah

Utah doesn't have explicit renter protections for balcony solar (unlike California's pending SB 868). But HB 340's broad legalization means renters are more empowered to negotiate with landlords.

A renter in Salt Lake City can say: "This is legal in Utah. My utility is fine with it. I'm installing a portable solar system on my balcony that I'll take when I move." Most landlords, seeing that it's legal and portable, will allow it.

For apartment buildings: many Utah apartments have south-facing balconies with excellent sun. This makes balcony solar a natural fit for renters.

What to Do Right Now in Utah

If you're a Utah resident ready to go solar:

1. Decide on a location. Find a spot that gets unshaded sunlight from late morning through afternoon. South or southwest-facing is ideal. Roofs, patios, balconies, and temporary ground mounts all work.

2. Check with your utility. While HB 340 says utilities can't block you, calling first is smart. "I'm installing a 1,200-watt plug-in solar system on a 120V circuit. Are there any local issues I should know about?" Most utilities will say fine.

3. Choose a product. EcoFlow is the current main option (though non-UL-3700-certified). Watch for other brands to enter the market in mid-2026 once certification arrives.

4. Buy and install. Unbox, assemble, plug in. No permit, no inspection, no utility approval needed.

5. Monitor your system. Use EcoFlow's app or your utility's net metering portal to watch your generation and see how much you're offsetting.

The Expansion Timeline

As of April 2026, EcoFlow is established in Utah. Other manufacturers are preparing entry. UL 3700 certification is expected mid-2026, which will unlock many more products and brands.

Utah is also watching what happens when other states legalize plug-in solar. By 2027, Utah will likely have multiple brands competing, driving prices down and improving product options.

Why Utah Matters to the Whole Country

HB 340 proved the concept works. It shows that plug-in solar can be legal, safe, and uncontroversial. No grid crashes. No safety disasters. Just people offsetting some of their electricity with portable solar.

Other state legislatures are looking at Utah's law as a model. California's SB 868 is more ambitious (renter protections, appliance classification), but it's building on the foundation HB 340 set.

Utah is the prototype for how America could scale plug-in solar nationally.

Next Steps for Utah Residents

1. Read our complete plug-in solar guide for broader context on the technology.

2. Calculate your specific system size and output using your address and your current electricity bill at any solar calculator (like our savings calculator when it launches US features).

3. If you're in an HOA or a rental, read our HOA guide and renter guide for specific strategies.

4. Check back in mid-2026 for product reviews once UL 3700 certification begins arriving and competition heats up.

Utah residents are lucky. You have clear law, proven technology, and a growing ecosystem of support. If you're curious about solar, plug-in is available to you right now, legally and safely. No other state can say that yet.