The rules depend on where you live

Each country or state page has its own limits, registration steps and power prices.

Germany

Allowed

Up to 800 W inverter output · In force since May 16, 2024

Netherlands

Unclear

Up to 800 W inverter output · In force since January 1, 2026

US states with plug-in solar laws

There is no federal rule for plug-in solar. States are passing their own laws, with caps from 420 W to 1,920 W.

California

Allowed with limits

Up to 1,200 W inverter output · Takes effect January 1, 2027

Colorado

Allowed with limits

Up to 1,920 W inverter output · In force since August 12, 2026

Connecticut

Allowed with limits

Up to 1,200 W inverter output · In force since October 1, 2026

Maine

Allowed with limits

Up to 1,200 W inverter output · In force since July 15, 2026

Maryland

Allowed with limits

Up to 1,200 W inverter output · In force since July 1, 2026

Massachusetts

Law signed, not yet in force

Up to 1,200 W inverter output

Michigan

Law signed, not yet in force

No specific wattage limit for plug-in kits

New Hampshire

Allowed with limits

Up to 1,200 W inverter output · Takes effect January 1, 2027

New Jersey

Allowed with limits

Up to 1,200 W inverter output · Takes effect March 1, 2027

New York

Law signed, not yet in force

Up to 1,200 W inverter output

Pennsylvania

Law signed, not yet in force

No specific wattage limit for plug-in kits

Utah

Allowed with limits

Up to 1,200 W inverter output · In force since May 7, 2025

Vermont

Allowed with limits

Up to 1,200 W inverter output · In force since July 1, 2026

Virginia

Allowed with limits

Up to 1,200 W inverter output · Takes effect January 1, 2027

No law in your state yet? Plug-in kits exist in a grey area there: utilities may prohibit connection. Check with your utility before buying.