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Is plug-in solar legal in Mississippi?
No specific law
Mississippi has no plug-in solar law. Plugging a kit into an outlet falls under your utility's interconnection rules, which usually require approval.
Max system sizeNo capsmallest tier: Level 1 <=20 kW, <=110% of usage
Electrician / permitPermit and inspectionutility rules apply
Tell the utility?Interconnection applicationtypical fee $95
CertificationUL 1741 inverterrequired by every utility
What this means for you
✓ What you can do
- Apply for interconnection like any small generator (Level 1 <=20 kW, <=110% of usage), typical fee $95.
- Use portable panels with a power station, never connected to house wiring, with no permission at all.
- Install conventional rooftop or ground-mount solar through the standard interconnection process.
✕ Not yet / not allowed
- Plug a grid-tied kit into an outlet without an interconnection agreement; it can breach your service terms.
- Expect a permit or wiring exemption; none exists without a law.
- Count on a law soon: no plug-in solar bill has been filed.
What the rules say
No plug-in solar law or bill in Mississippi.
No law doesn't mean no rules. In Mississippi, a kit that pushes power back into your home wiring is treated like any other grid-connected generator. Most utilities require an interconnection application, and plugging in without one can breach your service agreement. Off-grid use (panels charging a battery that powers devices directly) avoids this entirely.
Before you plug in: Mississippi checklist
- The rule that applies is Mississippi Public Service Commission (Entergy MS, Mississippi Power only)'s interconnection process: Mississippi Distributed Generation and Interconnection Rule (rev. 10/4/2022).
- A plug-in kit falls in the smallest tier (Level 1 <=20 kW, <=110% of usage). $95-$135 (Entergy MS).
- Permits: No statewide NEC; local permits where they exist.
- Only consider kits with a UL 1741-listed inverter (UL 3700 preferred); a non-listed inverter will not be approved anywhere.
- What exports are worth: Avoided cost + 2.5 c adder (3 yrs) + 2 c low-income adder.
- If approval is slow or costly, a portable panel and power station (never connected to house wiring) needs no permission.
- No plug-in solar bill has been filed yet; the nearby states that passed laws in 2026 are the template to expect.
The rules in detail
Mississippi has no statute specific to plug-in solar. Average residential electricity price: 14.54¢ per kWh (EIA, July 2026).
Your utility's rules in Mississippi
No utility in Mississippi publishes a rule that specifically allows or bans outlet-connected generation, so the general interconnection agreement is what applies. Here is what the largest residential utilities say and require.
| Utility | Residential customers | Published position on plug-in kits |
|---|---|---|
| Entergy Mississippi | 384,611 | No specific statement; 'A one-time non-refundable fee of $95-$135 will be applied to your bill'. source |
| Mississippi Power | 157,437 | No specific statement. |
| Coast Electric Power Association | 82,510 | No specific statement. |
Interconnection terms for a sub-1.2 kW system
| Regulator | Mississippi Public Service Commission (Entergy MS, Mississippi Power only). |
|---|---|
| Governing rule | Mississippi Distributed Generation and Interconnection Rule (rev. 10/4/2022). |
| Smallest tier | Level 1 <=20 kW, <=110% of usage. |
| Application fee | $95-$135 (Entergy MS). |
| Electrician / permit | No statewide NEC; local permits where they exist. |
| Export compensation | Avoided cost + 2.5 c adder (3 yrs) + 2 c low-income adder. |
| Electrical code | None statewide (Biloxi 2026 NEC 6/1/2026). |
In practice
- Fee charged once operational; years to recover from exports.
- Half the state outside PSC rule.
State incentives
- Low-income DG rebates ($3,000 upfront via approved contractor).
- No credit or sales-tax exemption.
Who is pushing for a law
- GSREIA
- Sierra Club Mississippi
- Mississippi Solar Energy Society
Savings preview: 800 W kit in Mississippi
Adjust for your setup →≈ $130/year
Frequently asked questions
Is plug-in solar legal in Mississippi?
Mississippi has no plug-in solar law. Plugging a kit into an outlet falls under your utility's interconnection rules, which usually require approval.
Do I need a permit or electrician for plug-in solar in Mississippi?
Default. Check with your local building department before you plug in.
Do I have to tell my utility in Mississippi?
Default. Plugging in a grid-tied kit without following this can breach your service agreement.
What can an 800 W plug-in kit save in Mississippi?
Roughly 896 kWh and about $130 per year at Mississippi's average residential rate of 14.54¢/kWh, assuming a typical balcony or patio mount. See the calculator for your exact setup.