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New to plug-in solar?

Plug-in solar lets anyone generate free electricity — no roof, no permit, no contractor. A single panel on your balcony can meaningfully cut your bill, especially as rates keep rising.

What is plug-in solar? →How it saves you money →

Missouri

ConsideringUpdated August 2, 2026

Missouri has decent solar potential, especially in the southern part of the state. Its HOA solar law (RSMo § 442.404) was strengthened by a 2025-2026 Missouri Supreme Court ruling confirming it applies retroactively to existing covenants, giving homeowners strong protection -- though it's written around roof-mounted panels, not plug-in devices. Ameren Missouri and Evergy run net metering under the state's Net Metering and Easy Connection Act, but interconnection rules (disconnect switches, anti-islanding tests) are designed for traditional systems. Two 'Portable Solar Generation Device' bills, HB 2528 and HB 2444, were introduced in 2026 but neither received a floor vote before the legislature adjourned sine die on May 15, 2026.

Get notified when Missouri goes legal

Laws are spreading state by state. One email when Missouri passes — no spam.

What You Can Use in Missouri While You Wait

Plug-in solar that ties into your home's wiring isn't legal here yet — but a portable solar generator (a panel charging a battery you plug devices into directly) never touches your home's wiring, so it's legal in Missouri right now, no law required.

Budget start

Jackery Explorer 300 Plus (288Wh Battery)

0.288 kWh battery · Jackery 100W panel · recharges in ~4.4h

Powers: Phone, router, and lights through the outage, plus ~6 hours of CPAP a night

$299 + $199 panel
Check price ↗View panel ↗
Most popular

Jackery Explorer 1000 v2 (1kWh Battery)

1.07 kWh battery · Jackery 100W panel · recharges in ~16h

Powers: A fridge, router, and lights running through a full day outage

$449 + $199 panel
Check price ↗View panel ↗
Whole-apartment backup

Jackery Explorer 2000 v2 (2.04kWh Battery)

2.042 kWh battery · Jackery 100W panel · recharges in ~31h

Powers: A full-size fridge and CPAP for days, or a window AC unit for a few hours

$749 + $199 panel
Check price ↗View panel ↗

See the full solar backup guide

Runtime charts for real devices, more kit options, and setup steps.

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Electricity Cost Trend

↑ 4.0%/yr avg — Moderate
Rates up 22% over the past 5 years
From $0.099/kWh in 2021 → $0.120/kWh today. Every year you delay solar, your bills compound.
4.0%
avg. annual increase
Historical avg. residential rate ($/kWh)
$0.099
2021
$0.103
2022
$0.107
2023
$0.111
2024
$0.115
2025
$0.120
2026
20-year projected rate
$0.263/kWh
at 4.0%/yr escalation
Extra you'll pay over 20 yrs*
$1,173
vs. today's rates (1,000 kWh/mo household)
Best time to go solar
Now
Each year of delay = a year of higher grid bills

What a Missouri Law Could Look Like

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Based on neighboring states

Utah (1,200W), Maine (600W), and Virginia (1,000W pending) provide the template. A Missouri law would likely allow 600–1,200W systems to plug into standard household outlets — no permit required.

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High rates = strong economics

At Missouri's avg. $0.120/kWh, a 600W system generating ~880 kWh/year saves roughly $106/year. Payback in as few as 8 years at current rates.

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Renters and condo owners

Plug-in solar requires no permanent installation — just an outlet. This makes it uniquely accessible to renters and condo owners who can't get rooftop solar.

FAQ

Is plug-in solar legal in Missouri?
Not explicitly authorized yet. Missouri's net metering law requires an interconnection application, a disconnect switch, and anti-islanting testing for grid-tied systems with no carve-out for small plug-in devices. A bill addressing 'Portable Solar Generation Devices' (HB 2444) was introduced in the 2026 session but had not advanced as of mid-2026.
Can my HOA block solar panels in Missouri?
No, not for roof-mounted solar collectors on homeowner-occupied property. RSMo § 442.404 bars HOA covenants from prohibiting solar installations, and a 2025-2026 Missouri Supreme Court ruling confirmed this applies even to older covenants. However, the law was written for roof-mounted panels and doesn't specifically address plug-in or balcony devices.
Does Ameren Missouri or Evergy offer net metering?
Yes, both utilities offer net metering for systems up to 100kW under Missouri's Net Metering and Easy Connection Act, though excess generation is credited at an avoided-cost rate after an annual true-up rather than carrying over at full retail value indefinitely.
What's Missouri's solar potential?
Missouri has moderate-to-good solar potential, particularly in the southern half of the state, comparable to many mid-Atlantic states -- making it a reasonable candidate for supplemental plug-in solar once clearer rules are in place.
Is there a bill to legalize plug-in solar in Missouri?
Not this session. Two 'Portable Solar Generation Device' bills, HB 2528 and HB 2444, were introduced in Missouri's 2026 legislative session, but neither received a floor vote before the legislature adjourned sine die on May 15, 2026, so no plug-in-solar-specific law is currently in effect.

Stay in the Loop

We monitor all 50 state legislatures. The moment Missouri files a plug-in solar bill, you'll be the first to know.

Legal DisclaimerLaws change. Information on this site reflects our best understanding of current statutes as of the date shown. It is not legal advice. Verify requirements with your state utility commission, local building department, and a qualified attorney before installation.