Generators & Power Systems

For most commercial and industrial applications, a three-phase generator is the best choice because it can handle higher electrical demands with greater efficiency. LJ Electric designs and installs custom power systems across Connecticut, ensuring your generator matches your facility’s load requirements and supports your critical equipment—whether it’s a school, manufacturing plant, or retail space.

Commercial generator costs can range from $15,000 for smaller 30 kW units to $500,000 or more for large-capacity systems. LJ Electric helps Connecticut businesses choose and size generators that balance performance and budget, while managing installation, permits, and inspections to make the process seamless from start to finish.

A 20,000-watt (20 kW) generator can power essential systems in a mid-sized commercial space or multi-unit property, including HVAC systems, lighting, refrigeration, and computer equipment. LJ Electric can evaluate your building’s loads and recommend the right generator capacity to keep your operations running smoothly.

Sizing a generator for a commercial building typically involves 5–10 watts per square foot, plus an additional 50 kW for startup loads. LJ Electric’s licensed team performs on-site load assessments and designs power systems tailored to your facility, ensuring reliable performance across Connecticut’s demanding business environments.

The 80% rule means a generator should only operate at 80% of its rated capacity to maintain efficiency, prevent overload, and extend its lifespan. LJ Electric’s certified electricians are experts at configuring and balancing electrical loads to keep your commercial generator safe, efficient, and code-compliant.