Maryland Plug-In Solar Payback

Governor Moore signed Maryland’s Utility RELIEF Act on May 12, 2026. Reddit celebrated: plug-in solar is legal. The top comment on r/balconysolar pushed back: the same bill package is ending 1:1 net metering for rooftop solar and pushing payback toward 15 years.

Both things can be true. Plug-in solar under HB 1532 was never designed around export credits. Here is how to model Maryland payback honestly in 2026.

Maryland law details, watt limits, and savings calculator for BGE, Pepco, and Delmarva territories.

Maryland solar law page →

What HB 1532 gives plug-in solar

Our Maryland law guide covers the full text. The pieces that matter for economics:

No utility pre-approval for systems up to 1,200W
No landlord ban on qualifying systems
391W and under: UL certification not required by statute (still use a listed inverter anyway)
No net metering for plug-in systems: surplus export is not compensated

That last point is the whole payback model. You size for self-consumption, not maximum production.

What the RELIEF Act changes for rooftop (and why Reddit is angry)

The Utility RELIEF Act is a broad consumer package. Separate provisions reduce export compensation for traditional net-metered rooftop systems over time, pushing new rooftop installs toward battery-backed self-consumption.

Plug-in solar under HB 1532 never had full NEM. Reddit commenters conflating “Maryland killed solar economics” with “balcony solar is useless” are comparing rooftop NEM cuts to a product category that already assumed zero export value.

Your job as a buyer: ignore export. Model only kWh you use while the sun is hitting the panels (or stored in a battery).

Realistic payback math

Maryland default bundled rates (BGE/Pepco/Delmarva) average ~16.8¢/kWh supply + delivery. Competitive retail contracts in the Baltimore-Washington corridor often run 20–22¢/kWh.

800W system, Baltimore, south-facing, 4.5 sun hours, 85% system efficiency:

Self-consumption	Daily self-use	Annual savings @ 16.8¢	Annual @ 21¢
60% (away all day)	1.84 kWh	$113	$141
70% (mixed)	2.14 kWh	$131	$164
85% (WFH or battery)	2.60 kWh	$159	$199

Kit cost: $750–$950 (PluggedSolar, Hoymiles DIY, EcoFlow STREAM now shipping to MD).

Scenario	Payback
$850 kit, 70% self-use, 16.8¢	6.5 years
$850 kit, 70% self-use, 21¢ retail	5.2 years
$1,900 STREAM Ultra + battery, 85% self-use	9–11 years

Compare to rooftop NEM 3.0-style economics at 15 years without storage: plug-in solar in Maryland is faster payback than new rooftop for renters who cannot install NEM-eligible systems anyway.

Maryland’s deregulated market wrinkle

~370,000 Maryland households buy supply from competitive retail providers. Your supply rate may differ from the utility default. Plug-in solar displaces the full delivered kWh at whatever rate you actually pay.

Check your bill for the supply line, not just the headline “price to compare.” A variable contract spiking to 24¢ in summer makes balcony solar more attractive than the statewide average suggests.

Should you add a battery?

Maryland’s no-export rule makes batteries more valuable than in states where surplus kWh earn credit.

If you are out during peak sun hours, a 1.5–2 kWh battery (EcoFlow STREAM Ultra path) captures midday production for evening use. That moves self-consumption from 60% to 85% and adds roughly $40–$60/year in savings at Maryland rates.

Battery payback extension: 2–3 extra years on kit cost. Worth it if your goal is maximum bill reduction, not minimum payback.

EcoFlow now ships to Maryland

Multiple r/balconysolar posts confirm EcoFlow STREAM microinverter availability for Maryland addresses post-signing. That gives Maryland buyers an integrated option beyond DIY Hoymiles builds.

Still verify GFCI outlet, circuit capacity, and insurance documentation before install.

Run Maryland numbers with your actual rate and WFH vs away-from-home schedule.

Maryland payback calculator →