Electrical Panel Upgrade Engineering in St. Louis, MO

St. Louis is a major Midwest healthcare, manufacturing, and commercial market along the Mississippi River, where above-moderate seismic risk from the New Madrid Seismic Zone influences structural engineering requirements on commercial projects.

What we engineer

Service load calculations per NEC Article 220 (220.82 for new loads, 220.83 for existing dwellings — Article 120 under the 2026 NEC); 100A-to-200A-to-400A service upgrades with Class 320 meter sockets; panelboard replacement and subpanel design per NEC Article 408; AFCI/GFCI updates per 210.12/210.8; whole-house surge protection per 230.67 and exterior emergency disconnects per 230.85; EV-ready panels with EVSE as a continuous load at 125% (625.41) and solar-ready panels with 705.12 busbar headroom.

Utility coordination

Every service upgrade is coordinated with your utility — service applications, meter socket specs, overhead vs underground changes, transformer capacity checks, and service-lateral upgrades with Oncor, Con Edison, PG&E, ComEd, Duke Energy, FPL, Xcel and utilities across all 49 states.

Backed by licensed PEs

All electrical panel upgrade engineering is backed by Apex Grid Engineering: 10+ PEs licensed across 49 states.

Project types

• Commercial office & retail
• Healthcare & medical facilities
• Institutional & civic
• Hospital & surgical center expansion
• Medical office buildings
• Industrial & manufacturing facilities
• Cleanroom & precision production

Everything else your project needs

Electrical Panel Upgrade Engineering nearby

Ballwin · Belton · Blue Springs · Branson · Cape Girardeau · Chesterfield · Clayton · Columbia · Florissant · Gladstone · Hazelwood · Independence