The Facilities Manager's Guide to Scaling EV Charging at Work

When a company installs its first EV chargers, the decision is usually reactive: a few senior employees got EVs, someone asked about charging, and facilities said yes. Four stalls go in the best-positioned parking spots and everyone moves on.

Two years later, the company has 40 employees driving EVs, a waitlist that extends three weeks, a Slack channel full of passive-aggressive messages about stall hogging, and facilities managers who are fielding three charging-related calls a week. The reactive decision has become a strategic gap.

This guide is for facilities managers who want to get ahead of that trajectory, or who are already in the middle of it and need a framework for scaling up thoughtfully.

The Infrastructure Layer: Level 1 vs. Level 2

Level 1 charging uses a standard 120V outlet and delivers approximately 4–5 miles of range per hour. It's cheap to add (you may already have outlets in your garage) but slow. A full charge from empty takes 40–50 hours. For most workplace scenarios, Level 1 is inadequate as a primary option unless employees are doing very short commutes.

Level 2 uses a 240V circuit and delivers 20–30 miles of range per hour. A typical 4-hour workplace session gives most EVs 80–120 miles of range added, enough to top off a vehicle that arrived with a partial charge. This is the standard for serious workplace charging programs. Installed cost runs $1,500–$5,000 per stall depending on how close the electrical panel is to the parking area, local labor rates, and whether trenching or conduit runs are needed.

Load Management Basics

Once you have more than 6–8 Level 2 chargers, electrical load management becomes relevant. If every charger runs at full capacity simultaneously, you may exceed the capacity of your panel or your utility service. Load management software (sometimes called smart charging or EVSE management) distributes available amperage across active sessions, slowing each charger slightly to keep total draw within limits.

You don't need load management for a 4-stall installation. You do need to think about it when planning a 20-stall deployment. Talk to your electrician and your EVSE vendor about the capacity of your incoming service before committing to a large installation.

Planning for Growth: The Stall-to-Driver Ratio

The right stall-to-EV-driver ratio depends on how long each charging session needs to be. If your employees typically need 2–3 hours of charging per workday, and the workday is 9 hours, one stall can theoretically serve 3 drivers per day. In practice, with session overlap, coordination overhead, and occasional all-day parkers, a realistic ratio is one stall for every 1.5–2.5 regular users.

When planning infrastructure, it's worth surveying your employee base: how many currently have EVs, how many are planning to buy one in the next 12 months, and how many miles per week they drive. This gives you a demand forecast rather than a snapshot. EV adoption accelerates fast once chargers are available. The existence of workplace charging often itself accelerates purchases.

Phased Expansion: From 4 to 20 Stalls

The most cost-effective approach to EV charging expansion is to rough in electrical capacity for a larger installation during the initial build-out, even if you only activate a subset of stalls at first. Running conduit to 20 stall positions when you're already trenching for 6 costs a fraction of what trenching twice would cost.

A typical expansion path looks like this: install 4–6 stalls and evaluate utilization after 6 months. If utilization is consistently above 80% during business hours, it's time to expand. Install the next tranche, usually 4–8 more stalls, and repeat. This phased approach lets you match infrastructure investment to observed demand and avoids both under-building (constant waitlists, employee frustration) and over-building (idle stalls, poor capital utilization).

• Phase 1 (0–6 months): 4–6 stalls, basic coordination, establish policy baseline
• Phase 2 (6–18 months): Evaluate utilization data, expand to 10–12 stalls if demand justifies it
• Phase 3 (18+ months): Consider load management, multi-site rollout, and deeper analytics integration

The Policy Layer

Infrastructure without policy is a recipe for conflict. At the 4-stall level, informal norms mostly hold. At 12 stalls, you need written rules: who's eligible, how long they can stay, what happens when they overstay, and who handles enforcement. We've written a separate guide with a full policy template: see the Workplace EV Charging Policy article.

The policy should be reviewed every 6–12 months as your fleet grows. Rules that work at 6 stalls may be too loose at 20. Time limits that felt generous when demand was low may need tightening as the waitlist grows.

The Coordination Software Layer

This is the piece most facilities guides skip, but it's the one that ties everything else together. Hardware and policy can be in perfect shape, but if employees have no real-time visibility into stall availability, they're making decisions based on guesswork, which means your well-planned infrastructure will be underutilized and over-conflicted.

Coordination software does three things that can't be done manually at scale: it maintains real-time stall status (who's in, when they started, when they're expected out), it manages a fair queue (so access doesn't depend on Slack response speed), and it provides utilization data (so you can make informed expansion decisions).

You don't need custom software for this. Purpose-built tools exist specifically for workplace EV charging coordination, with per-stall pricing that scales as you add capacity. At $5 per stall per month, managing 20 stalls costs $100/month, less than the cost of a single hour of HR time dealing with a charging complaint.

Multi-Site Considerations

If your organization has multiple offices or campuses, EV charging coordination gets more complex. Each site needs its own stall inventory and queue, but HR policy should be consistent across sites. Reporting should be unified so facilities leadership can see utilization across the organization.

The facilities manager's job shifts at multi-site scale from 'managing chargers' to 'managing a program.' That means defining standards (which EVSE models to standardize on, what electrical specifications to use), establishing a governance structure (who approves new stalls at each site), and building a reporting cadence to track demand and plan expansion.

“The companies that handle EV charging well are the ones that treated it like a program from the start, not an amenity that got bolted on.”

Summary: The Three-Layer Framework

Scale EV charging thoughtfully by attending to three layers in sequence. Infrastructure first: get the electrical capacity right, use Level 2 chargers for most stalls, rough in capacity for growth. Policy second: write down the rules before you need them, define time limits and enforcement, review regularly. Coordination software third: give employees real-time visibility and a fair queue, use utilization data to drive expansion decisions.

Skip any layer and you'll feel it eventually. Skip coordination software and your infrastructure investment will underperform. Skip policy and your software won't prevent the interpersonal conflicts. Skip infrastructure planning and no amount of policy or software will make 6 stalls serve 30 drivers. The layers are complementary, which is why the companies that get this right tend to invest in all three.