Maas Energy Works

Operations Field Technician II

Join Maas Energy Works in Visalia, California as an Operations Field Technician II. This role focuses on maintaining and troubleshooting biogas-powered generators and related equipment. Enjoy working outdoors with a supportive team and benefit from hands-on experience in renewable energy operations.
Maas Energy Works
Maas Energy Works
Visalia, California, United States On-site Full time USD 25–35 per hour UTC-07:00

Maas Energy Works

Company Overview

Maas Energy Works

Redding, United States

2010

Approximately 140 employees (source: americanbiogascouncil.org). No public revenue disclosures for 2023 or later, but has raised $1.56 million total through unattributed funding rounds (source: cbinsights.com).

What They Do

Maas Energy Works specializes in the production of biogas through anaerobic manure digesters, primarily converting dairy and some swine waste into renewable natural gas (RNG), electricity, heat, and emerging hydrogen. The company employs innovative lagoon cover systems that capture methane at a lower cost compared to traditional tank digesters, making it a leader in the renewable energy sector (source: maasenergy.com). Their full-service offerings encompass design, procurement, financial projections, grant financing, permitting, construction management, operations, maintenance, and in-house fabrication, which includes divisions like Maas Motor Works and Goose Works (source: maasenergy.com). Targeting US dairy farms and commercial facilities, Maas Energy Works serves 16 of California's 28 operating dairy digesters, providing clients with revenue opportunities from RNG and electricity sales while managing ownership and operational risks (source: thevine.ucanrinnovate.io). Their commitment to serviceability and innovation, such as assembling turbocharged gensets and virtual biogas pipelines, sets them apart in a competitive market (source: maasenergy.com).

Projects & Track Record

Maas Energy Works has an impressive track record, having completed over 70 new or upgraded dairy digester facilities across 11 states, all of which remain operational. Notable projects include the first California digester at Van Warmerdam Dairy, operational since May 2013, and the Pixley Biogas project with Calgren Renewable Fuels, which offsets up to 4% of the natural gas used by an ethanol plant (source: maasenergy.com). The company has also developed the Stillwater Ranch project in Hanford, CA, which utilizes a virtual pipeline to deliver biogas as compressed natural gas (CNG) for vehicle fuel, and upgraded the Hilarides Dairy digester to enhance efficiency and reduce emissions (source: maasenergy.com). With a focus on operational uptime, Maas Energy Works boasts a 100% uptime record across its 70+ projects, showcasing their reliability and commitment to quality in the renewable energy sector (source: maasenergy.com).

Recent Developments

In recent years, Maas Energy Works has announced a significant joint development agreement with Clean Energy Fuels Corp. to construct nine RNG facilities at dairies across seven states, with a projected investment of approximately $130 million (source: cbinsights.com). This initiative underscores Maas's position as the largest dairy digester developer in the nation, with over 60 projects completed to date (source: americanbiogascouncil.org). Additionally, the company has launched its Goose Works division for in-house biogas cleanup, further enhancing its operational capabilities (source: maasenergy.com). While there have been no reported acquisitions or new funding rounds beyond the previous total of $1.56 million, Maas continues to innovate and expand its project pipeline (source: maasenergy.com).

Working There

Maas Energy Works offers a variety of roles across multiple departments, including development, engineering, fabrication, operations, maintenance, and construction management. The company supports approximately 140 employees, with hiring focused on its Redding, California headquarters and fabrication shop, as well as field roles across 8-11 states (source: maasenergy.com). The culture at Maas Energy Works is deeply rooted in its family-owned origins, emphasizing hands-on innovation and strong partnerships with farmers, which fosters a collaborative and reliable work environment (source: thevine.ucanrinnovate.io). While specific benefits are not detailed, the company is positioned for growth, providing opportunities for employees to engage in meaningful work within a steadily expanding firm (source: maasenergy.com).


Last updated on Feb 23, 2026 | Report an issue

Job Description

The Operations Field Technician II will ensure the RNG facility and all equipment related to biogas handling, upgrading, clean-up, and power generation (combustion engines/generators) are operating properly. The technician is expected to perform routine and preventative maintenance, repair equipment as necessary, and troubleshoot issues as they arise, while coordinating with co-workers and business partners as needed. Equipment to be operated and serviced will most commonly include biogas-powered generator engines (gensets), PLCs, data loggers, biogas blowers, reciprocating and screw compressors, 3-phase motors, and electrical wiring. Applicants should have experience with a variety of mechanical and electrical equipment and enjoy troubleshooting issues within industrial facilities. Excellent communication skills (verbal, phone, email, and text) are needed to work in this team-based, distributed support environment.

Responsibilities

  • Perform routine maintenance on biogas combustion engines (gensets) and associated power generation equipment, including regular oil changes, air filter replacements, ignition system checks, engine coolant system maintenance, and servicing of slurry heaters and emissions control systems (SCR).
  • Troubleshoot and repair issues with genset engines and generator units, diagnosing mechanical or electrical problems. Conduct engine overhauls and major repairs as needed (e.g., replacing or rebuilding components such as cylinder heads, valve trains, pistons, connecting rods, crankshafts, turbochargers) and ensure generator windings and electrical systems are properly maintained. Also assist in troubleshooting other facility equipment (such as PLCs, compressors, and pumps) on-site or via remote support tools as issues arise.
  • Develop and implement preventative maintenance plans for all critical equipment, especially gensets. Utilize the company's maintenance tracking software (CMMS) to schedule and document maintenance activities, track performance, and ensure timely execution of preventive maintenance tasks.
  • Coordinate repair work with team members and external contractors as necessary, and ensure all maintenance checklists and standard operating procedures are followed and completed on schedule.
  • Oversee on-site operations, ensuring that all equipment and systems (including the biogas digesters, gas upgrading systems, and generator engines) are operating as designed while maximizing facility up-time.
  • Ability to prioritize tasks.
  • Maintain spare parts inventory to ensure critical replacement components are readily available.
  • Communicate via email, text, and phone with team members, clients, and business partners as necessary regarding operational status, maintenance plans, and issues.
  • Support team members and contribute to a collaborative, team-based work environment, while balancing reactive and preventative maintenance priorities as appropriate.
  • Maintain a safe working environment and comply with all safety procedures and regulatory requirements, including those related to site operations, digester systems, and RNG equipment.

Qualifications & Skills

Required:

  • Ability to work in the field unsupervised
  • General mechanical and electrical experience (2+ years preferred)
  • Hands-on experience maintaining and repairing internal combustion engines or generator sets, including performing routine servicing and major engine overhauls
  • Analog and Discrete I/O - Calibration and troubleshooting
  • VFDs (Variable Frequency Drives)
  • 24 VDC - 480 VAC electrical systems
  • Experience with large horsepower rotating equipment
  • Ability and desire to learn new equipment, software, and electronic interfaces
  • Analytical/critical thinker with the ability to diagnose and troubleshoot mechanical and electrical systems
  • Self-starter
  • Quick learner
  • Ability to read and interpret P&IDs (piping and instrumentation diagrams) & blueprints
  • Welding and fabrication skills
  • Knowledge of drive train alignment procedures
  • Rigging and lifting procedures
  • Proficient in English; Spanish helpful but not required
  • Valid U.S. driver's license
  • Comfortable working outdoors in varied weather conditions and around livestock/agricultural environments

Preferred:

  • Familiarity with laboratory procedures & testing
  • General understanding of dairy farm manure handling practices
  • Understanding of SCADA systems and PLC logic
  • HVAC experience
  • Experience using computerized maintenance management systems (CMMS) or maintenance tracking software
  • Dairy digester experience

Other Duties

Please note this job description is not designed to cover or contain a comprehensive list of activities, duties, or responsibilities that are required of the employee for this position. Duties, responsibilities, and activities may change at any time with or without notice.

Physical Demands Requirements

Work Environment: This job primarily operates in outdoor conditions that include inclement weather (heat, cold, rain, etc.). Noise levels may be loud at times, and the role involves working around moving mechanical or construction equipment.

Physical Demands: Must be able to move objects of at least 50 lbs., and use leg, abdominal, and lower back muscles to provide support over time without fatigue. The position requires constant movement and use of limbs; it requires good manual dexterity, coordination, and stamina.

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About the role

April 22, 2026

Full time

Company

April 24, 2026

On-site

USD 25–35 per hour

Bioenergy

Maas Energy Works

maasenergy.com

  •  Visalia, California, United States

2+ years preferred

UTC-07:00