Delta Electronics’ On-Site Microgrid to Provide Valuable Solar + Storage Insights

Why It Matters

The microgrid provides Delta and its customers real‑world data on how commercial energy assets can reduce peak‑demand costs and enhance grid resilience, accelerating broader adoption of grid‑interactive solutions.

Key Takeaways

• 425 kW solar, 2.8 MWh battery cut grid use by ~50%
• Solid‑state transformer enables real‑time voltage regulation
• Facility can achieve net‑zero summer operation with solar alone
• Expansion adds 5 MWh storage circuits and 300 kW gas turbine
• Live‑grid data will shape commercial microgrid designs

Pulse Analysis

As utilities grapple with aging infrastructure and rising peak‑demand charges, corporations are turning to on‑site microgrids to bolster resilience and lower energy costs. Delta Electronics’ newly commissioned Detroit facility exemplifies this shift, linking a 425 kW solar array, a 2.8 MWh battery system and multiple EV chargers to a 13.2‑kV medium‑voltage point of interconnection provided by DTE Energy. The partnership gives Delta a rare laboratory‑grade environment where grid‑interactive strategies can be evaluated under live utility conditions, a capability traditionally reserved for utility‑scale projects.

At the heart of the installation lies a solid‑state transformer, a DOE‑backed innovation that replaces passive hardware with digitally controlled power conversion. This enables near‑instantaneous voltage regulation, faster response to grid signals and granular coordination of the 3‑MW power‑conditioning system with the battery storage. During summer months the solar output is expected to meet the entire building load, delivering net‑zero operation, while the battery provides load‑shaving for the remaining six months, cutting the plant’s reliance on the grid by roughly 50 %.

Beyond the immediate cost savings, the Detroit microgrid serves as a data‑rich testbed for Delta’s customers, who can observe real‑world performance of solar, storage, EV charging and, in the near future, a 300 kW gas turbine. Planned additions of two 5 MWh storage circuits will enable black‑start and off‑grid simulations without large physical loads. By publishing these insights, Delta aims to accelerate commercial adoption of grid‑interactive technologies, helping utilities manage peak demand, improve reliability and meet sustainability targets.