Plug-In Solar

Pennsylvania Update

What Is Plug-In Solar?

Plug-in solar is a small solar kit that plugs into a regular wall outlet. As of October 6, 2026 it is not covered by any Pennsylvania law, and House Bill 1971, which would legalize it, is still in committee.

A plug-in solar system is one or a few solar panels paired with a small inverter and a standard plug. You set the panels in the sun and plug in. The power they make flows into your home's wiring and offsets electricity you would otherwise buy from the utility.

Most kits run from a few hundred watts up to about 1,600 watts, far smaller than a typical rooftop system. Like any grid-tied inverter, the unit shuts off when the grid goes down, so it will not power your home during an outage.

Balcony Solar and Other Names

Plug-in solar is also called balcony solar, plug-and-play solar, backyard solar, plug-in PV and mini solar. In Germany, where more than a million systems are installed, they are known as Balkonkraftwerke, or balcony power plants.

Is Plug-In Solar Legal in PA?

No state law yet. Pennsylvania has no law specific to plug-in solar. Today, a unit that can feed power back to the grid generally requires an interconnection application and agreement with your electric utility.

HB 1971 is the proposal. Introduced October 27, 2025 by Rep. Chris Pielli and referred to the House Energy Committee on October 28, 2025. It has dozens of cosponsors from both parties, including Energy Committee Chair Rep. Elizabeth Fiedler.

No votes so far. As of October 6, 2026, we found no committee vote, no floor vote, no amended version and no scheduled vote.

The clock matters. Pennsylvania's two-year legislative session ends November 30, 2026. A bill that has not passed by then expires and would have to be reintroduced in the 2027-28 session.

Other states. Utah was the first state to pass a plug-in solar law, in 2025. UL Solutions published UL 3700, a safety standard aimed at these products, in January 2026. About 10 states in total have passed laws allowing plug-in solar, with most states considering bills.

What PA HB 1971 Would Do

As introduced, the bill defines a portable solar generation system as one that is:

  • Limited to 1,200 watts of power back to the grid
  • Designed to connect through a standard electrical outlet
  • Intended mainly to offset the customer's own electricity use
  • Certified by UL or an equivalent nationally recognized testing lab (the bill names no specific standard)

For those systems, the bill would:

  • Remove the interconnection application, interconnection agreement, utility inspection and interconnection fees
  • Bar the utility from requiring prior approval, registration or notification
  • Make the system ineligible for net metering, with no credit or payment for power sent to the grid
  • Shield the utility from liability for damage or injury caused by the system
  • Require installation per the manufacturer's instructions and applicable local building and fire codes
  • Take effect 60 days after it becomes law

Pennsylvania HB 1971

What HB 1971 Would Not Change

Mounting. The bill sets no mounting standards. Local building, fire and electrical codes still apply, and local agencies can still enforce general electrical safety rules.

Conventional solar. Hard-wired rooftop and ground-mount systems are outside the definition. They still need permits and utility interconnection.

HOAs and landlords. The bill does not address homeowner association, condo or landlord rules.

Practical Tips for Plug-In Solar

One side of your panel. A 120-volt plug-in unit feeds only the side of a split-phase panel that its outlet is on. If it makes more than that side is using, the excess goes to the grid or excess output is reduced by the inverter, and under HB 1971 earns no credit from the utility. Placement and sizing matter.

Mounting considerations. Solar panels are sails. Racks, ground stands and attachments to walls, fences or deck rails need to be built for storm winds, and permit rules for them vary by municipality.

Value comes from self-use. Because exported power earns no credit, a plug-in system pays off by running while your home is using power.

Considering Plug-In Solar?

Plug-in solar is designed for small offsets. If you want to cover most of your electric use, a permanent, permitted system is still the way to do it, and that is what we install. Until a law changes, we do not recommend connecting a grid-tied unit without your utility's approval. We are following HB 1971 and will update this page when its status changes.

When plug-in solar is legal in Pennsylvania, Trifecta Solar will be able to design and install a safe, properly mounted plug-in solar system for you if a full rooftop or ground-mount system isn’t a good option.

Want backup power too? Learn about home battery storage, or see how net metering works in Pennsylvania. Ready to talk about a full system? Contact Trifecta Solar.

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