How to Deploy Commercial EV Chargers Without Waiting 18 Months for a Utility Transformer Upgrade

In more than 80% of the facilities NYREER audits, that transformer upgrade is completely unnecessary. Here is how our electrical engineers deploy high-throughput EV charging on your existing service today.

Step 1: Prove Your True Spare Capacity With an NEC 220.87 30-Day Load Study

Paper load schedules add up the nameplate ratings of every breaker in a building as if every chiller, elevator, kitchen oven, and compressor ran at 100% simultaneously 24 hours a day. Under National Electrical Code (NEC) Section 220.87, an Authority Having Jurisdiction (AHJ) will accept 30 days of continuous revenue-grade demand recording to establish true peak demand.

When NYREER installs 3-phase current transformers on a typical commercial building, we frequently discover that a building with an 800A main breaker peaks at only 310A for two hours on July afternoons—and draws less than 140A overnight.

Step 2: Deploy Dynamic Load Management (ALMS)

Instead of dedicating a static 50A breaker to each Level 2 charger (or 200A to a DC fast charger), NYREER engineers Automated Load Management Systems (ALMS) using ChargePoint power-sharing and real-time building CT feedback:

• When building HVAC load peaks between 2:00 PM and 4:00 PM, the EV array automatically throttles down to keep total building draw safely below 80% of main breaker capacity.
• The moment building load drops at 5:00 PM, full amperage flows back to the EV plazas.

Step 3: Multiply Physical Port Turns With Managed EV Valet

Even with dynamic load management, an EV charger produces zero value when a fully charged car sits plugged into it for 7 hours. By pairing 8 dynamically shared ports with NYREER’s Managed EV Valet Operations, our staff rotates vehicles as soon as they reach target state-of-charge—delivering the daily vehicle throughput of 24 unmanaged ports without spending a dollar on new utility transformers.