Energy Systems

What Energy Systems does

Energy Systems LLC is a private, U.S.-based industrial power-generation distributor and service provider headquartered in Stockton, California, founded in 1933. Operating as an authorized industrial distributor of Generac Industrial Energy, the company supplies stationary generators (diesel, natural gas, and dual fuel up to 3.25 MW), mobile generators, automatic transfer switches, battery energy storage systems (BESS), enclosures, fuel tanks, and light towers, and increasingly packages these into integrated Microgrid Solutions. The company complements equipment sales with a deep service portfolio that includes sizing and design, air quality permitting, load banking and startup, ATS servicing, fuel services, generator repair, and multi-year maintenance agreements covering both Generac and non-Generac equipment. It also operates a rental fleet of up to 2,900 kVA.

The business is executed through a 150+ field-technician workforce covering 16 U.S. states, supported by an enterprise field-sales motion that engages industrial businesses, government and municipal entities, and electrical and construction contractors via phone, email, web-based quote requests, and live chat. The installed base of 35,000+ industrial generators and 18,000+ service events per year underwrite a meaningful recurring service annuity, supplemented by parts sales and connected-monitoring services (Generac Link Manager) distributed on Generac's behalf. Revenue is generated through hardware sales, recurring rental and maintenance agreements, and one-time parts transactions, with all pricing delivered via custom quote-based procurement and multi-year service contracts.

Name

Energy Systems

Legal name

Energy Systems LLC

Website

https://espowergen.com

Company type

Private

Founded year

1933

Operating status

Operating

Headcount range

251–500 employees

Ownership category

akta.pro rank

Product category

Industrial Power Generation Equipment

NAICS

Electrical Equipment Manufacturing (33531), Motor and Generator Manufacturing (335312)

SIC

Electrical Industrial Apparatus (3620), Switchgear & Switchboard Apparatus (3613), Electronic & Other Electrical Equipment (No Computer Equip) (3600)

akta.pro primary industry

Energy & Renewables Specialty Contracting (Solar PV, Storage, EV Charging) (IMAFALAJ)

akta.pro secondary industries

Major Component Service & Overhauls (Gearboxes, Blades, Generators, Inverters, Turbines) (EUAMAGAF), Commissioning, Testing & Energization Services (Pre-Commissioning, Grid Code Compliance) (EUAMAFAK), Repowering, Augmentation & Retrofit Integration (Capacity Expansion) (EUAEAEAL)

Keywords

• Industrial generators
• Backup power systems
• Generator service
• Microgrid solutions
• Battery energy storage

Headquarters

HQ city

Stockton

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Supply Chain, Operations, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. Generator Equipment Sales: Sale of stationary, mobile, and rental power generators along with transfer switches, enclosures, and fuel tanks. Equipment ranges from portable units to systems up to 3.25 MW.
2. Generator Rentals: Rental power generator units up to 2900 kVA with scalability options. Revenue from short-term and long-term rental agreements.
3. Service and Maintenance Agreements: Comprehensive maintenance agreements, repair services, load banking, startup services, and ATS servicing for Generac and non-Generac generators.
4. Parts Sales: Genuine OEM parts for reliable generator operation, sold as one-time transactions and through service agreements.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels5 records

Core offering

Energy Systems is an authorized industrial distributor of Generac Industrial Energy, selling stationary and mobile power generators (up to 3.25 MW and 2900 kVA), transfer switches, battery energy storage systems (BESS), enclosures, fuel tanks, and light towers. The company also rents generator units, supplies OEM parts, and delivers lifecycle services including sizing/design, maintenance agreements, repair, air quality permitting, load banking, ATS servicing, fuel services, and remote monitoring via the Generac Link Manager platform, serving industrial, government, and contractor customers across 16 U.S. states.

Product overview

Energy Systems is an authorized industrial distributor of Generac Industrial Energy, providing a comprehensive portfolio of industrial power generation products, accessories, and energy solutions. The core product lineup centers on Generac generators including Stationary Generators (Diesel, Natural Gas, Dual Fuel up to 3.25 MW), Mobile Generators, Transfer Switches, and Stationary Battery Energy Storage Systems (BESS). Supporting products include Enclosures & Fuel Tanks and Light Towers. The company also offers integrated solutions such as Microgrid Solutions combining multiple assets, and Remote Monitoring & Connectivity via Generac Link Manager. Beyond equipment sales, Energy Systems provides extensive services including Sizing & Design, Maintenance Agreements, Generator Repair, Air Quality Permitting, Load Banking & Startup, ATS Servicing, Fuel Services, and Advanced Services. Rental options up to 2900 kVA are available for temporary power needs, along with Co-Op Purchasing programs and genuine OEM parts.

Differentiator

Problem solved

Functional benefit

Products and services

• Stationary Generators
• Mobile Generators Portable power generator units in Diesel and Natural Gas options designed for temporary or mobile power needs across industrial and construction sites.
• Transfer Switches Automatic transfer switches that safely transition electrical loads between utility power and backup generator power during outages.
• Stationary Battery Energy Storage (BESS) Battery Energy Storage Systems providing clean energy storage and load management for industrial applications, enabling energy resilience.
• Enclosures & Fuel Tanks Protective enclosures and fuel storage tanks designed to house generators and provide reliable fuel supply in industrial settings.
• Light Towers Portable lighting solutions for industrial work sites, construction areas, and emergency lighting applications.
• Microgrid Solutions Multi-asset energy solutions combining generators, battery storage, and control systems to deliver the highest energy resiliency for facilities.
• Remote Monitoring & Connectivity (Generac Link Manager) Connected monitoring solution enabling real-time visibility into generator status, performance alerts, and remote diagnostics.
• Generator Rentals Rental power generator units up to 2900 kVA with scalable options for temporary power needs.
• Maintenance Agreements
• Generator Repair Comprehensive repair services for industrial generators, supporting both Generac and non-Generac equipment.
• Sizing & Design Technical engineering services to properly size and design backup power systems based on facility requirements.
• Air Quality Permitting Compliance verification, permit process support, and regulatory reporting for industrial generator installations.
• Load Banking & Startup
• ATS Servicing
• Fuel Services
• Advanced Services
• Generator Parts
• Co-Op Purchasing

Quantifiable outcome

• 35,000+ industrial generators installed
• +1 more outcomes

Named customers3 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

One partnership is on record.

• Generac Industrial EnergycoreChannel Partner/ Reseller/ DistributorEnergy Systems is an authorized Industrial distributor of Generac Industrial Energy, providing smart power solutions and customized service agreements. The partnership enables distribution of Generac's full product portfolio including stationary generators up to 3.25 MW, mobile generators, transfer switches, battery energy storage systems (BESS), enclosures, fuel tanks, and light towers.

Scale indicators4 records

Recent moves6 records

Expansion highlights6 records

Broad incumbents

• Cummins Power Generation: Cummins designs and sells industrial gensets, transfer switches, and digital master controls through its distributor and service network, directly competing for the same industrial, healthcare, and government backup power customers as Energy Systems.
• Caterpillar Electric Power: Caterpillar supplies a broad portfolio of diesel and gas generator sets, switchgear, and microgrid solutions via its global Cat dealer network, competing with Energy Systems on the same industrial backup power projects and service contracts.
• Sunbelt Rentals (Power & HVAC): Sunbelt Rentals offers large-scale industrial generator rentals, climate control, and power solutions across the US, competing with Energy Systems' rental business for temporary and emergency power projects.

Direct peers

• Aggreko: Aggreko is a global specialist in temporary power generation, with rental fleets of large diesel and gas generators and supporting microgrid/BESS offerings—directly comparable to Energy Systems' rental and multi-asset microgrid solutions business.
• MTU/Rolls-Royce Power Systems: MTU (a Rolls-Royce brand) builds diesel and gas generator sets, complete power systems, and microgrid solutions distributed and serviced through regional dealer/service partners—overlapping with Energy Systems across industrial backup power, service agreements, and turnkey installations.
• Kohler Power Systems: Kohler Power Systems manufactures industrial-grade generators, transfer switches, and paralleling switchgear and sells them through an authorized dealer network that delivers sizing, installation, and service—directly analogous to Energy Systems' Generac Industrial distribution and service model.
• Power Equipment Company: Power Equipment Company is an authorized Generac Industrial distributor and service provider across multiple US states, selling stationary and mobile generators, BESS, and offering maintenance and engineering services—essentially a parallel Generac channel partner.

Others

• United Rentals (Power & HVAC): United Rentals operates a Power & HVAC division with industrial-scale temporary generators, BESS, and climate solutions nationally—competing with Energy Systems on large temporary power, microgrid, and infrastructure jobs.

Emerging players

• Bloom Energy: Bloom Energy provides fuel cell-based on-site power generation and microgrid solutions for commercial, industrial, and government customers—an emerging alternative to traditional diesel/gas backup that overlaps with Energy Systems' microgrid and resilience offerings.
• Tesla Energy: Tesla Energy sells Powerpack, Megapack, and Autobidder software for utility and commercial-scale BESS, microgrids, and virtual power plants—competing with Energy Systems' growing BESS and microgrid solution business for clean energy resilience projects.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/energysystemswc
• LinkedInlinkedin.com/company/energy-systems-llc

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Energy Systems