Why Federal Pacific & Zinsco Panels Are Failing Modern Homes

If your home still has a Federal Pacific Electric (FPE/Stab-Lok) or Zinsco electrical panel, you may be living with a hidden hazard. These outdated panels were popular in the 1950s–1980s, but today they are known for serious safety issues, insurance concerns, and compliance problems. If you’re considering adding solar panels or a home battery system, replacing these panels isn’t just recommended — it’s often required.

What’s Wrong With Zinsco and Federal Pacific Panels?

Fire Hazard – Independent testing has shown that many breakers in FPE and Zinsco panels fail to trip when they should. That means if your system is overloaded, instead of shutting off, the wires can overheat — a leading cause of electrical fires.
Outdated Technology – These panels were never designed for today’s electricity demands. Modern homes run high-powered HVAC, appliances, EV chargers, and (increasingly) solar and battery systems. An old panel simply can’t handle the load safely.
Insurance & Real Estate Issues – Many insurance companies refuse coverage for homes with these panels. Likewise, buyers and home inspectors often flag them as a major issue during real estate transactions.

Why a Main Panel Upgrade Is Required Before Solar & Batteries

If you’re interested in solar panels or energy storage (battery backup), the first step is making sure your electrical system can safely handle the new equipment. Utilities and inspectors generally will not approve solar or battery interconnections with a Federal Pacific or Zinsco panel because:

They can’t safely accept the backfeed power from solar.
They may not have enough amperage to support a new system.
Code requirements (NEC and local AHJ rules) prohibit unsafe equipment.

That means upgrading your main service panel isn’t optional — it’s mandatory if you want to move forward with solar or battery installation.

Benefits of Upgrading Your Panel

Even if you’re not installing solar today, upgrading your panel offers big advantages:

Safety First – Reduce the risk of electrical fire and protect your family.
Peace of Mind – Avoid insurance coverage problems.
Future-Ready – Be prepared for solar panels, a home battery, or even EV charging when you’re ready.
Increased Home Value – Modern electrical infrastructure adds value to your property.

Next Steps for Homeowners

If your home has a Federal Pacific (FPE/Stab-Lok) or Zinsco panel, now is the time to take action. At Ally Electric & Solar, we specialize in safe and code-compliant main panel upgrades that make your home solar-ready.

Schedule a free panel inspection today and learn how we can upgrade your home’s electrical system and prepare you for solar and battery savings.