Energy Storage

Value-engineered solutions for battery energy storage system (BESS) and microgrid projects.

Battery Energy Storage (BESS) & Microgrid Engineering

McCalmont Engineering was one of the first firms to design for the energy storage market, beginning in 2011. We provide full BESS electrical engineering — power and energy sizing, interconnection design that combines storage with solar, microgrid and “peaker” plant design, backup power, and PE-stamped permit packages with complete NEC compliance calculations. As codes evolve, our in-house code expert keeps every design current with the latest NEC requirements.

Integrated Solar-Plus-Storage

We design storage that works hand-in-hand with PV to mitigate demand charges, shift energy to the most valuable hours, and provide backup power — with metering and interconnection designed for how the systems actually operate together.

Right-Sized Battery Storage

Oversized batteries waste capital; undersized batteries leave savings on the table. Our power and energy sizing analysis matches the system to your load profile, utility tariff, and resilience goals.

Energy Storage Design
  • Full detailed BESS electrical engineering and design
  • BESS sizing analysis (power & energy)
  • Microgrid design for off-grid applications
  • Backup power system design
  • Interoperability design with other clean energy systems (PV, fuel cell)
  • Utility interconnection design at medium voltages (up to 34.5 kV)
  • Detailed site plans with major equipment placement
  • Full permit package preparation including NEC compliance calculations
  • Rows of battery storage and thousands of solar panels

    Texas

    100 MW / 200 MWh

  • A bright desert landscape with solar panels and energy storage installation

    California

    20 MW / 20 MWh

  • A desert landscape with solar grids in front of mountains with steam rising in the distance

    Arizona

    150 MW / 660 MWh

Solar + storage expertise with nationwide licenses in states throughout the U.S. 

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  • A tree-lined solar array

    Texas

    100 MW / 200 MWh

  • A long array of solar panels next to a dirt road that disappears into the distance

    Colorado

    50 MW / 200 MWh

  • A desert landscape with thousands of solar panels

    Arizona

    77 MW / 154 MWh

  • Green energy storage on a installation on a vast landscape

    California

    500 MW / 500 MWh

  • Energy storage installation in a garage

    California

    118 kW / 744 kWh

  • Energy storage and solar installation in a parking lot

    California

    125 kW / 251 kWh

Energy Storage Engineering FAQ

How long has McCalmont designed energy storage?

Since 2011. We were among the first engineering firms to design for the battery energy storage market and have delivered storage and microgrid projects for over a decade.

Do you design microgrids and backup power?

Yes. We design microgrids, “peaker” plants that blend solar and storage, and backup-power systems for off-grid and resilience applications.

Do your designs include NEC compliance and permit packages?

Yes. Every project includes PE-stamped permit plans with full NEC compliance calculations.