Commercial & Industrial

Value-engineered solutions for solar PV, energy storage, microgrid and EV charging station projects.

Commercial & Industrial Solar, Storage & EV Charging Engineering Services

McCalmont Engineering provides complete electrical engineering and PE-stamped designs for commercial and industrial solar PV, battery energy storage, microgrid, and EV charging projects — from kilowatts to megawatts. We design rooftop, carport, and ground-mount systems for EPCs, developers, integrators, and building owners who need plans that pass plan check the first time and get built at the lowest installed cost. Because our principals come from solar construction backgrounds, every drawing reflects how systems are actually built in the field.

Permit-Ready, Code-Compliant Designs

From rooftop fire-code setbacks and solar canopy photometrics to ADA-compliant EV site plans, our PE-stamped permit packages include the calculations and details AHJs expect — so your project moves from approval to energized faster.

Lower Your Demand Charges

Commercial electric bills are driven by demand charges. We engineer solar-plus-storage and managed EV charging systems that shave peak demand and shift load to the lowest-cost hours — protecting your operating budget for the life of the system.

PV Plant Designs
  • Site plans with major equipment placement
  • Full detailed DC & AC electrical engineering & design
  • Utility grid interconnection designs
  • Line vs. load-side tap analysis & design
  • Rooftop system fire code compliance design
  • Solar canopy photometric lighting designs
  • Full permit package preparation including NEC compliance calculations
Battery Energy Storage Designs
  • Energy and demand analysis
  • Site plans with major equipment placement
  • Detailed electrical design
EV Charging Designs
  • Workplace and public charging system design
  • Medium- and heavy-duty EV fleet system design
  • ADA compliant site plans
  • Solar and renewables integration to offset demand charges
  • Integration with energy storage systems to time-shift demand
  • A large solar array nested between several roads

    Illinois

    7,210 kW-DC

  • Several large buildings with rooftops dotted with solar panels

    California

    114 kW-DC

  • A solar array on a hillside

    Wisconsin

    2,372 kW-DC

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

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  • An industrial solar farm installation

    Tennessee

    437 kW-DC

  • EV chargers in a parking lot outside of a building

    California

    6 EV charging positions

  • Solar panels extending toward a treeline

    Illinois

    983 kW-DC

  • Lines of solar panels at a road intersection

    Arkansas

    1,498 kW-DC

  • Solar panels on a large inner city building

    Massachusetts

    1,300 kW-DC

  • Solar panels covering a parking lot and large office building next to it

    California

    544 kW-DC

  • A rooftop of solar panels in front of a farm and trees

    Illinois

    205 kW-DC

  • Camo army trucks parked underneath a large solar array

    California

    4 MW-DC

  • Solar panels covering a parking lot and large office building behind it

    California

    972 kW-DC

  • EV chargers in a parking lot

    California

    24 EV charging positions

  • An open EV charger position in a parking lot

    California

    12 EV charging positions

  • A long row of EV chargers in a parking lot

    California

    24 EV charging positions

  • Solar panels stretch into the distance under blue skies

    Maryland

    18.6 MW-DC

  • A parking rooftop composed of solar panels

    California

    696 kW-DC

Commercial & Industrial Engineering FAQ

Do you provide PE-stamped drawings for commercial solar projects?

Yes. Our professional engineers are licensed in more than 40 states and stamp electrical drawings and calculations for C&I solar, storage, microgrid, and EV charging projects nationwide.

Can you design EV charging for our facility or fleet?

Yes. We design workplace, public, and medium- and heavy-duty fleet charging, including solar and storage integration to offset demand charges through our Paired Power EV charging subsidiary.

What size projects do you engineer?

Our commercial and industrial team designs systems ranging from tens of kilowatts to tens of megawatts.