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Real-World EV Charging Deployment Without Grid Expansion

Overview

SolarGain deployed mixed‑use EV charging for employees and visitors without upgrading its electrical service, using TeraHive’s Charging Station Management System (CSMS) with Dynamic Load Balancing (DLB) to operate entirely within existing site limits.

At SolarGain’s Tucson office, rising employee EV adoption and growing visitor demand created pressure to add charging capacity—despite a constrained electrical service. Instead of investing in a costly utility upgrade, SolarGain adopted a software‑first approach that actively governs charging behavior. Through real‑time load enforcement and centralized control, TeraHive enabled both private and public charging to coexist safely under a strict site‑level power envelope.

The Challenge

SolarGain’s electrification plans were constrained by three fixed realities:

  • Limited Capacity: Adding multiple chargers would exceed the site’s safe amperage limit without a major service upgrade
  • Conflicting Use Cases: The site required reliable, priority charging for staff alongside a payment-enabled charger for the public.
  • Geographic Spread: The solution needed to manage assets across different electrical panels and a mobile office roughly 80 feet away.

Without site‑level control over charging load, a service upgrade would have been unavoidable.

The Solution

SolarGain implemented TeraHive’s CSMS with integrated Dynamic Load Balancing, transforming EV charging from unmanaged load into a controlled site resource.

  • Dynamic Load Balancing (DLB): DLB monitors total site demand, automatically throttling EV charging speeds during peak building use to keep the entire facility within its existing power limits.
  • Unified CSMS Management: A single cloud interface manages both the private employee network and the public,payment-enabled charger, eliminating the need for disparate systems.
  • Software-Defined Infrastructure: By using DLB to coordinate charging activity, SolarGain avoided the five-figure costs and months of downtime associated with a utility service upgrade.
Key Achievements
  • Service upgrade eliminated: Multi‑charger deployment achieved entirely within the existing electrical footprint.
  • Seamless mixed‑use operation: Automated priority logic ensures employee charging availability while supporting public access and revenue generation.
  • Operational simplicity: Energy usage, access control, and payment processing are monitored through a single dashboard.
  • Distance‑resilient control: Reliable communication and load enforcement maintained across the 80‑foot span to the mobile office area.
Expected Outcomes

With TeraHive's solution in place, SolarGain has shifted from static infrastructure to a scalable energy platform:

  • Predictable ROI: Demand spikes are prevented through dynamic load control, reducing exposure to utility penalties and unplanned capital expense.
  • Modular expansion: Additional charging at the mobile office can be commissioned on the existing control plane with no redesign.
  • Microgrid readiness: The site is architecturally prepared to integrate solar, storage, and other energy assets under the same unified control framework.
Your Path to Microgrid‑Ready EV Charging

Unlock additional EV capacity from your existing electrical service while building toward full site energy control. Learn how TeraHive’s CSMS & DLB solutions make constrained infrastructure work harder—without upgrades.

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