Safe by design. Legal by the book.
Plug-in solar is new in California, so we hold every Wattzup kit to the full rulebook: California's plug-in solar law, the National and California Electrical Codes, and independent safety certification.
SB 868 in plain English.
California's plug-in solar law (SB 868) takes effect January 1, 2027. A system qualifies only if it meets all of these rules, and every Wattzup kit is built to meet them.
1,200 W per home
Total output is capped at 1,200 watts per dwelling. Our inverter tops out at exactly 1,200 W, so adding panels can never push you over.
Certified as a system
The kit must be certified as a plug-in solar system by UL or an equivalent nationally recognized testing lab.
NEC + CA Electrical Code
It must meet the latest National Electrical Code and the California Electrical Code (Title 24, Part 3).
Shuts off in an outage
A certified safety feature isolates the system so it never sends power to the grid when the power goes out.
Plugs into a receptacle
The system connects and disconnects through a standard outlet. No rewiring of your home.
No approval, no fees
No interconnection agreement, permission or fees from your utility. They may ask for a free online registration, and we can file it for you.
Every part, independently tested.
We only sell gear that carries real certificates from a nationally recognized testing lab. We'll publish each certificate number before a kit ships.
Automatic shutoff
If the grid goes down, the inverter stops in seconds, protecting utility workers and your home.
Hard 1,200 W cap
The inverter can't put out more than 1,200 W, no matter how many panels are connected.
Weatherproof
IP67-rated inverter, sealed connectors and UV-resistant cables built for California sun and rain.
Safe setup checklist
- Plug into an outdoor, GFCI-protected outlet with a weatherproof cover, as the electrical code requires outdoors.
- Plug the cord straight into the wall outlet.
- One kit per home, up to 1,200 W total.
- Mount panels with the included straps and follow the instructions.
- Register with your utility if it asks. We can do it for you.
- Not sure about your outlet or circuit? Book a site assessment, or have us install a GFCI outlet.
Never do this
- Don't use extension cords, power strips or adapters.
- Don't connect two kits or go over 1,200 W per home.
- Don't plug panels into anything other than the Wattzup inverter.
- Don't open the inverter or cut or splice the cables.
- Don't block exits, windows or walkways with panels.
- Don't mount on shared railings without your landlord's or HOA's OK.
Certificates and manuals
These will be posted here before kits ship in early 2027.
Will my kit power my home during a blackout?
No. For safety, the inverter shuts off within seconds when the grid goes down, so it never sends power onto utility lines. It turns back on automatically when power returns.
Do I need a permit or an electrician?
Not for a qualifying plug-in system under SB 868. You just plug it into an outdoor GFCI outlet. If you don't have one, a licensed electrician can add it. We offer outdoor GFCI installation.
Can I add a second kit later?
You can add panels to your kit up to 1,200 W total, but not a second kit. The law caps each home at 1,200 W combined.
Do I have to tell my utility?
Your utility can't require approval or charge fees, but it may ask you to fill out a free online registration with your address and system size. We can file it for you.
I rent. Is that OK?
Plug-in solar is made for renters, since nothing is wired into the building. Check your lease and get your landlord's OK before mounting anything on a railing or shared wall.
This page is a plain-English summary for general information, not legal or electrical advice. Requirements are based on California SB 868 (effective January 1, 2027), the National Electrical Code and the California Electrical Code. Rules and product specs may change before launch. Questions? Contact us.