AG Engineering
AG Engineering Inc. is a Rancho Cucamonga, California-based licensed contractor founded in 1985 that sells, installs, services, and rents standby diesel generators (5–2,000 kW) for commercial, industrial, medical, telecom, government, and utility customers throughout Southern California.
- Company typePrivate
- Founded1985
- HeadquartersRancho Cucamonga, United States
- Headcount11–50
- GTM typeB2B
- OfferingServices
What AG Engineering does
AG Engineering Inc. is a privately-held, founder-owned mechanical and electrical contractor specializing in standby power systems for commercial, industrial, and government customers throughout Southern California. Founded in 1985 by Al Gutierrez and incorporated in 1995, the company operates from a 30,000 sq. ft. facility in Rancho Cucamonga, California, and holds California State Contractor's License #578984. Its core offering is turnkey generator installation and lifecycle support for systems ranging from 5 kW to 2,000 kW, including new and used equipment sales, rentals, load bank testing, mechanical and electrical overhaul and repair, AQMD compliance upgrades, and recurring preventative maintenance programs, supported by a 24-hour emergency standby service. Revenue is generated through four streams: hardware sales of generators and OEM parts (Caterpillar, Onan, Detroit Diesel, Generac, Kohler, Woodward, Basler, and others), professional services for installation and repair, usage-based rental of generators and load banks, and recurring preventative maintenance contracts.
The company serves mission-critical infrastructure operators across multiple verticals — broadcast, telecommunications, healthcare, retail, banking, utilities, military, government, and institutional facilities — where power loss translates directly into lost production, lost revenue, or, in medical contexts, risk to patient safety. Pricing is custom quote-based, driven by generator capacity, OEM brand, and installation complexity; multi-year service contracts extend the relationship beyond initial sale. Go-to-market is direct field sales and reputation-driven referrals concentrated in Southern California, with no public marketing programs, digital channels, or third-party distributors identified. Marketing relies on a basic company website, phone/fax/email outreach, and word-of-mouth referrals built over the firm's 40-year operating history.
Operationally, AG Engineering functions as a single-site regional specialist: a small team (11-50 employees) handles sales, engineering, fabrication, installation, and maintenance from one location. The combination of contractor licensing, multi-OEM parts inventory, customization and fabrication capability, and 24-hour emergency response constitutes the firm's competitive offering. No external capital, partnerships, M&A activity, or digital/AI capabilities are disclosed in the input data; ownership is concentrated with the founder, and the company exhibits the characteristics of a mature, closely-held small business.
AG Engineering firmographics
Firmographics- Name
- AG Engineering
- Legal name
- AG Engineering Inc.
- Website
- https://agengineeringinc.com
- Company type
- Private
- Founded year
- 1985
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- AG Engineering Inc. is a Rancho Cucamonga, California-based licensed contractor founded in 1985 that sells, installs, services, and rents standby diesel generators (5–2,000 kW) for commercial, industrial, medical, telecom, government, and utility customers throughout Southern California.
- Ownership category
- akta.pro rank
AG Engineering industry classification
Industry- Product category
- Standby Power Systems and Generator Services
- NAICS
- Motor and Generator Manufacturing (335312), Engine, Turbine, and Power Transmission Equipment Manufacturing (3336), Engine, Turbine, and Power Transmission Equipment Manufacturing (33361)
- SIC
- Motors & Generators (3621), Engines & Turbines (3510), Electrical Industrial Apparatus (3620)
- akta.pro primary industry
- Emergency & Standby Diesel Generator Power (Critical Facilities) (EUACACAH)
- akta.pro secondary industries
- Emergency Generator & Transfer Switch Troubleshooting (HSAOAEAI), Emissions Controls & Environmental Retrofit Services (SCR/FGD/ESP, CEMS) (EUAEALAL)
Keywords
Where AG Engineering is headquartered
LocationHeadquarters
- HQ city
- Rancho Cucamonga
- HQ country
- United States
- HQ region
- North America
Offices1 record
Markets served
AG Engineering business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Supply Chain, Operations, Infrastructure, Marketing or Sales
Revenue model
- Equipment Sales: Sales of new and used generator equipment, parts, and accessories. The company maintains a wide inventory of generator parts including generators from manufacturers such as Caterpillar, Onan, Detroit Diesel, Winco, Kubota, Generac, and others.
- Service and Repair: Service repairs, installation, troubleshooting, load testing, complete mechanical and electrical overhaul and repair for generators and diesel engines. Includes systems evaluations and needs assessments.
- Equipment Rental: Rental of generators and load bank equipment to customers who need temporary power solutions. Provides backup generator rentals during equipment servicing or upgrades.
- Preventative Maintenance Programs: Complete preventative maintenance programs to help customers avoid expensive emergency service calls and lengthy downtime. Includes equipment inspection, needs analysis, and minor parts services.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Multi-year contract | Custom Quote-Based Pricing |
Go-to-market motion2 records
Distribution channels2 records
Marketing channels2 records
AG Engineering product offering
Product offeringCore offering
AG Engineering sells, installs, rents, services, and maintains diesel and standby generator systems ranging from 5 to 2000 kW for commercial, industrial, and institutional customers in Southern California. The company delivers complete one-stop turnkey installations and provides 24-hour emergency standby power service, mechanical and electrical overhaul and repair of diesel engines, load bank rentals and testing, and preventative maintenance programs, supported by a wide inventory of multi-brand generator parts and accessories.
Product overview
AG Engineering is a generator sales, service, and installation company offering a comprehensive portfolio of products and services for standby power needs. Their core offering includes complete turnkey installations from 5 to 2000 kW, along with generator sales, rentals, service repairs, and preventative maintenance programs. The company sells and supports a wide range of generator parts (Kato, Beloit, Leroy Somer, Kohler, Generac, Onan, Marathon, Winco, Caterpillar, Detroit Diesel, Cummins, Kubota), governor controls and voltage regulators (Barber Coleman, Woodward, Basler), diesel engine parts, exhaust systems (Donaldson, Dynaflex, DME), batteries and chargers (Interstate, LA-Marche, Sens), daytanks (Pryco, Simplex, Tramont), filters (Baldwin, Donaldson, Racor, Wix, NAPA), and block heaters (Kim Hotstart). Services include 24-hour emergency standby power service, load bank rentals and testing, and complete mechanical and electrical overhaul and repair.
Differentiator
Problem solved
Functional benefit
Products and services
- Generator Sales (New and Used)
- Turnkey Generator Installation
- Generator and Diesel Engine Service and Repair
- Generator and Load Bank Rentals Rental of portable and standby generators and load bank equipment to provide temporary power and backup during equipment servicing, upgrades, or peak demand for commercial and industrial customers.
- Preventative Maintenance Programs Recurring preventative maintenance programs covering equipment inspection, needs analysis, and minor parts services designed to reduce expensive emergency service calls and lengthy downtime for commercial and industrial standby power customers.
- 24-Hour Emergency Standby Power Service Round-the-clock emergency standby power service for commercial, industrial, and institutional customers in Southern California experiencing power loss or requiring urgent response.
- AQMD Compliance Upgrades Air Quality Management District standards compliance services for emergency generator units, including UL Listed Los Angeles approved day tank updates, offered to commercial and industrial generator owners in regulated Southern California jurisdictions.
- Generator and Diesel Engine Parts Sales of replacement parts for generators and diesel engines across multiple brands, including generator parts (Kato, Beloit, Leroy Somer, Condec, Lima, Kohler, A/C Delco, Generac, IEC, Onan, Marathon, Winco, EM Machine, Denyo, Guardian), governor controls and voltage regulators (Barber Coleman, Woodward, Basler, A/C Delco), diesel engine parts (Caterpillar, Allischalmers, Detroit Diesel, Cummins, Kubota, Kohler, White, Onan), exhaust systems (Donaldson, Dynaflex, DME), batteries and chargers (Interstate, LA-Marche, Sens), day tanks (Pryco, Simplex, Tramont), filters (Baldwin, Dahl, Donaldson, Duralife, Farr, Racor, Vortex, Wix, NAPA), and block heaters (Kim Hotstart, Universal, Phillips Termo).
Quantifiable outcome
- 24-hour standby service availability for emergency power needs
- +2 more outcomes
Companies that use AG Engineering
Customer profileNamed customers7 records
Segments3 records
Ideal customer profiles3 records
AG Engineering technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature3 records
AG Engineering partnerships and signals
Strategic signalScale indicators4 records
Recent moves5 records
Expansion highlights4 records
AG Engineering competitors and assessment
Company assessmentBroad incumbents
- Cummins Inc. Major manufacturer of diesel generators, engines and power systems. Comparable as an OEM whose generator and engine products AG Engineering distributes parts for and services.
- Kohler Power Systems: Industrial standby generator manufacturer with EPA-certified enclosures, switchgear and paralleling systems. Comparable as an OEM whose engines and generators AG Engineering supports and sells parts for.
- Generac Power Systems: Leading U.S. manufacturer of standby and prime power generators across residential, commercial and industrial segments. Comparable as a generator OEM whose products AG Engineering sells, installs and maintains.
- Caterpillar (CAT) - Power Generation division: Global OEM of diesel and gas generator sets up to multi-megawatt sizes. Comparable because Caterpillar's installed base in Southern California is the primary equipment AG Engineering services, overhauls and supports with parts.
Direct peers
- GenServe: Independent generator service and power solutions company serving commercial and industrial customers across the Northeast and Mid-Atlantic. Direct comparable: independent multi-OEM generator service, maintenance and rental provider.
- Holt Power Systems: Texas-based Caterpillar dealer and generator systems integrator offering sales, rentals, service and 24-hour emergency response. Closely mirrors AG Engineering's full-service generator dealer/integrator model in a different regional market.
- Kinsley Power Systems: Independent provider of generator sales, service, rental and turnkey installations for standby power across the Mid-Atlantic U.S. Closest direct comparable: regional, full-service generator integrator with multi-brand support and emergency response — same business model as AG Engineering but on the East Coast.
- Smith Power Systems: Independent generator service organization in the Western U.S. providing sales, rental, service and parts across multiple OEM brands. Comparable as a multi-brand regional generator integrator with emergency response capability.
Others
- Blue Pillar: Provider of on-site power generation and energy management software for industrial and commercial facility power systems. Adjacent comparable — serves the same customer base (hospitals, data centers, manufacturers) needing reliable standby power, but through monitoring/IoT rather than service work.
Emerging players
- PowerSecure (Bloom Energy): Provider of distributed power generation and energy solutions including standby power services for utilities and commercial customers. Adjacent comparable — overlaps in standby power and critical infrastructure services but with a different ownership post-Bloom Energy acquisition.
Market position
Strengths4 records
Weaknesses5 records
Competitive moat5 records
Key risks5 records
Key highlights6 records
Customer concentration
AG Engineering social profiles
Digital presenceAG Engineering financial estimates
Financial estimateRevenue estimate
Valuation estimate
AG Engineering leadership team
Management profileNumber of profiles
Profiles1 record
AG Engineering funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
AG Engineering M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about AG Engineering
What does AG Engineering do?
AG Engineering sells, installs, rents, services, and maintains diesel and standby generator systems ranging from 5 to 2000 kW for commercial, industrial, and institutional customers in Southern California. The company delivers complete one-stop turnkey installations and provides 24-hour emergency standby power service, mechanical and electrical overhaul and repair of diesel engines, load bank rentals and testing, and preventative maintenance programs, supported by a wide inventory of multi-brand generator parts and accessories.
Is AG Engineering a public or private company?
AG Engineering is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was AG Engineering founded?
AG Engineering was founded in 1985. It employs 11 to 50 people.
Where is AG Engineering based?
AG Engineering is headquartered in Rancho Cucamonga, United States, in the North America region.
How does AG Engineering make money?
Four revenue lines are on record. Equipment Sales are the primary driver. The others are service and Repair, equipment Rental and preventative Maintenance Programs.
Who are AG Engineering's main competitors?
Broad incumbents on record are Cummins Inc., Kohler Power Systems, Generac Power Systems and Caterpillar (CAT) - Power Generation division. Direct peers are GenServe, Holt Power Systems, Kinsley Power Systems and Smith Power Systems. Blue Pillar is listed as an others. PowerSecure (Bloom Energy) is listed as an emerging player.
Does AG Engineering have an API?
No public API is recorded for AG Engineering.
What industry is AG Engineering in?
AG Engineering's product category is Standby Power Systems and Generator Services. Its primary akta.pro industry code is EUACACAH, Emergency & Standby Diesel Generator Power (Critical Facilities), with a secondary code of HSAOAEAI, Emergency Generator & Transfer Switch Troubleshooting. Its NAICS code is 335312 and its SIC code is 3621.