EVre is a licensed Professional Engineering Corporation (Missouri Certificate of Authority #2024017299). We provide EV charging engineering design in Missouri and Kansas from the same firm that scoped your project — no subcontracted stamp, no coordination gap between the engineer who sized the service and the one who sealed the drawings.

EV charging engineering design in Missouri and Kansas

Every project — Level 2 or DC fast, a single retail site or a campus program — gets the same discipline: load analysis up front, a PE-stamped package built against the utility territory the site sits in, and a proforma tied to the actual tariff it will be billed on. The engineering carries through AHJ comments and utility coordination to energization.

What we deliver

Load analysis & single-line development — utility service review and calculations that right-size the electrical scope
PE-stamped design & permitting — sealed issue-for-permit and construction drawing packages for Level 2 and DC fast charging, with AHJ coordination and utility submittals
Financial proforma & utility rate optimization — session-volume break-even modeling and tariff election analysis; on a recent university project, the rate election alone was worth $12,800 per year to the project’s bottom line
Incentive & rebate capture — utility program pre-approval and filing across Evergy and Ameren programs

What the seal covers

A PE stamp certifies every discipline the drawing set touches:

Site plan with charger locations, stall geometry and access aisles
Electrical one-line diagram from utility service to each charger
Panel schedules
Service and feeder load calculations per NEC 220.57 (each EVSE counted at 7,200 W or nameplate rating, whichever is larger) and branch-circuit sizing per 625.41/625.42 (conductors and overcurrent protection at 125% of the maximum load, or the EVEMS-set maximum where load management applies)
Available fault current, documented against equipment ratings
Grounding and bonding per Article 250
Construction details for conduit, pads, bollards and mounting
ADA-compliant stall count, accessible route and access aisle
Spec sections for permitting and bid

We issue for permit (IFP) first, then release the same set for construction (IFC) once AHJ review is closed. Responding to plan review comments is part of the engagement, not a change order.

Utility submittals we prepare

Evergy and Ameren want different packages. For Evergy, the Meter & Service Request portal form asks for service size and existing plus proposed demand in kW; the assigned planner requests site plans, one-lines and cut sheets afterward. For Ameren, whose new-service intake runs through the Construction Hotline rather than a portal, we prepare load sheets, site plans, electrical drawings, a signed plat, and the easement documents required.

Load management by design

The cheapest way to add charging capacity is to not need a bigger service. An energy management system (EVEMS, per NEC 625.42 and 750.30 in the 2023 NEC) lets the design use a managed maximum load across a charger bank instead of summing nameplate demand, which changes the NEC 220.57 calculation and can keep a project inside existing capacity.

It pays for itself when the alternative is a service upgrade or a utility-side transformer change — both running into the multi-year procurement lead times distribution transformers are seeing industry-wide. It isn’t worth the added control system when the site already has headroom; we size it project by project, not by default.

Rate and incentive engineering

The tariff a site lands on drives the proforma as much as the equipment does. Evergy’s Schedule BEVCS (Business EV Charging Service) replaces the standard demand charge with a lower facilities charge and a time-differentiated energy rate, but it requires a separately metered site — and it’s the only rate the Evergy Commercial EV Charger Rebate (Schedule CEVCR) is available under in Missouri. The rebate is welded to the rate, and pre-approval has to happen before the project starts.

On a recent project, the rate election was worth $12,800 per year against the standard demand-charge alternative — we run that comparison, with rebate eligibility layered in, before committing to a utility submittal. The federal 30C tax credit ended for property placed in service after June 30, 2026 and no longer factors into the math.

For contractors

Electrical contractors who already have the install relationship engage us for the stamp alone. Send existing service size, one-line if you have it, panel photos, and proposed charger count and class — we return sealed drawings sized to what you’re building, coordinated with the utility submittal if you need that too. Mark One Electric uses us this way for permit stamps and DC fast charger troubleshooting.

Why it matters

Most EV charging installers buy their engineering from national drafting mills that have never talked to Evergy or Ameren. We design against the actual tariffs, and our numbers come from projects we own and operate ourselves.

“They provide car chargers and have an engineer to stamp drawings for us, and can provide comprehensive design packages for EV charging stations. Also a good technician for troubleshooting DC fast chargers.” Service Manager — Mark One Electric

Engineering & Design