Electrical Service Upgrades (100 Amp to 200 Amp & 400 Amp)

Upgrade your home or business with a safe, reliable electrical service designed to handle today’s power demands. At O’Brien Electrical Contracting, we provide professional, code-compliant service upgrades built to last.

Outgrowing Your Electrical System?

Older electrical systems were never designed for today’s appliances, EV chargers, hot tubs, and modern living.


If your home still has a 100 amp service or outdated equipment, it may be time for an upgrade.


At O’Brien Electrical Contracting, we specialize in complete electrical service upgrades — not just replacing panels, but upgrading your entire system safely and correctly.


What Is an Electrical Service Upgrade?

An electrical service upgrade increases the total amount of power your home or building can safely handle.


This typically includes:

  • New meter socket
  • New service entrance conductors
  • New service disconnect
  • New grounding and bonding system
  • New main panel installation
  • Coordination with the utility company


This is more than a panel swap — it’s a full system upgrade.

Signs You May Need a Service Upgrade

  • Your home still has a 100 amp service
  • Breakers trip when using multiple appliances
  • Lights dim when equipment turns on
  • You’re adding a hot tub, EV charger, or addition
  • Limited space for new circuits
  • Outdated or unsafe equipment
  • Planning renovations or major upgrades


If your system can’t keep up, it’s time to upgrade.

Common Service Upgrades We Perform


  • 100 Amp → 200 Amp upgrades
  • 200 Amp → 400 Amp service upgrades
  • Overhead to underground service conversions
  • Meter relocation and upgrades
  • Service disconnect installations
  • Detached structure service upgrades


Our Service Upgrade Process


Step 1: On-Site Evaluation
 We assess your current system, load requirements, and future needs.


Step 2: Load Calculation & Planning
 We determine the proper service size for your home or building.


Step 3: Permits & Utility Coordination
 We handle permits and coordinate with your utility company (PPL).


Step 4: Installation Day
 We install your new service, panel, and equipment safely and cleanly.


Step 5: Inspection & Final Approval

We ensure everything passes inspection and is fully operational.

Benefits of a Service Upgrade


  • Increased electrical capacity
  • Safer, code-compliant system
  • Ability to add circuits and modern equipment
  • Improved reliability and performance
  • Supports EV chargers, generators, and additions
  • Increases property value

Why Service Upgrades Are Critical

An undersized or outdated electrical service can lead to:

  • Overloaded circuits
  • Increased fire risk
  • Equipment damage
  • Constant nuisance tripping
  • Unsafe electrical conditions


Upgrading your service ensures your system is built for today — and ready for tomorrow.

Ready to Upgrade Your Electrical Service?

Don’t let an outdated system limit your home or business.



Contact us today to schedule service or request an estimate.