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Energy Engineer Jobs in O Fallon, IL (NOW HIRING)

Birch Creek Energy

Civil Project Engineer

Saint Louis, MO · On-site

$82K - $110K/yr

Birch Creek Energy is a rapidly growing utility-scale solar development company focused on mid ... Reporting to the Sr Director of Execution Engineering, the Civil Project Engineer is responsible ...

Birch Creek Energy

Civil Project Engineer

Saint Louis, MO · On-site +1

$82K - $110K/yr

Birch Creek Energy is a rapidly growing utility-scale solar development company focused on mid ... Reporting to the Sr Director of Execution Engineering, the Civil Project Engineer is responsible ...

CDG Engineers Inc

Electrical Engineer

Saint Louis, MO · On-site

Renewable Energy - Solar, BESS, Electrification * Power Engineering with a focus on heavy industrial systems * System Relaying * Working ability with AutoCAD, Revit, or similar design tools preferred.

CDG Engineers, Inc.

Electrical Engineer

Saint Louis, MO · Hybrid

Renewable Energy - Solar, BESS, Electrification * Power Engineering with a focus on heavy industrial systems * System Relaying * Working ability with AutoCAD, Revit, or similar design tools preferred.

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All JobsEnergy Engineer JobsEnergy Engineer Jobs in O'Fallon, IL

Energy Engineer information

See O Fallon, IL salary details

$49.9K

$91.5K

$129.7K

How much do energy engineer jobs pay per year?

As of Aug 14, 2026, the average yearly pay for energy engineer in O'Fallon, IL is $91,474.00, according to ZipRecruiter salary data. Most workers in this role earn between $73,700.00 and $105,900.00 per year, depending on experience, location, and employer.

What does an energy engineer do?

As an energy engineer, you design sustainable projects and find ways to cut energy costs while increasing efficiency either as an employee of an organization or as a consultant. Your job duties include analyzing data on energy use, providing advice about green engineering methods, creating energy models, and designing plans for green building or remodeling projects. An engineering focus in specialties like air quality, energy procurement, electrical systems, green architecture, solar power, or heating, ventilation, and air conditioning (HVAC) systems can contribute to the overall energy efficiency of your organization.

What are some common challenges energy engineers face when implementing energy efficiency projects?

Energy Engineers often encounter challenges such as budget constraints, balancing energy savings with occupant comfort, and integrating new technologies into existing building systems. Collaboration with facility managers, contractors, and other engineers is essential to overcome these obstacles and ensure projects meet regulatory standards and client goals. Additionally, securing stakeholder buy-in and accurately measuring the impact of efficiency upgrades can require strong communication and data analysis skills.

What is the difference between Energy Engineer vs Mechanical Engineer?

AspectEnergy EngineerMechanical Engineer
Required CredentialsBachelor's in engineering, certifications like LEED or Certified Energy ManagerBachelor's in mechanical engineering, Professional Engineer (PE) license often preferred
Work EnvironmentDesigning energy systems, analyzing energy consumption, working on sustainability projectsDesigning mechanical systems, HVAC, manufacturing equipment, and product development
Employer & Industry UsageUtilities, renewable energy firms, consulting companies, government agenciesManufacturing, aerospace, automotive, HVAC companies

Energy Engineers focus on optimizing energy use and sustainability, often working on renewable projects and energy efficiency. Mechanical Engineers have a broader scope, designing mechanical systems across various industries. Both roles require engineering degrees, but their daily tasks and industry focus differ significantly.

What are the key skills and qualifications needed to thrive as an energy engineer, and why are they important?

To thrive as an Energy Engineer, you need in-depth knowledge of energy systems, thermodynamics, and environmental regulations, typically supported by a degree in engineering or a related field. Familiarity with energy modeling software (such as RETScreen or EnergyPlus), building management systems, and professional certifications like Certified Energy Manager (CEM) are highly valuable. Strong analytical thinking, problem-solving abilities, and effective communication skills set top performers apart. These competencies are crucial for designing efficient energy solutions, ensuring regulatory compliance, and collaborating with multidisciplinary teams to achieve sustainability goals.
More about Energy Engineer jobs

What cities near O'Fallon, IL are hiring for Energy Engineer jobs?

Cities near O'Fallon, IL with the most Energy Engineer job openings:

Energy Engineer jobs near you
Infographic showing various Energy Engineer job openings in O'Fallon, IL as of August 2026, with employment types broken down into 94% Full Time, 4% Part Time, and 2% Contract. Highlights an 87% In-person, 4% Hybrid, and 9% Remote job distribution, with an average salary of $91,474 per year, or $44 per hour.

Solar Performance Engineer

Birch Creek Energy

Saint Louis, MO

Full-time

Retirement, PTO

Posted 18 days ago

Job description

Birch Creek Energy is a rapidly growing utility-scale solar development company focused on mid-market projects across multiple RTOs. Recently recapitalized and ranked #3 on Inc. 5000's list of Fastest Growing Companies (2023), the Company is actively building its independent power producer (IPP) platform and executing meaningful project M&A. With a team of approximately 60 professionals, Birch Creek seeks self-starters who share its commitment to accelerating solar development across the United States.

Birch Creek is seeking a Solar Performance Engineer to drive the technical oversight, performance optimization, and technical report management of our utility-scale solar and energy storage assets. This position plays a critical role in ensuring our operational fleet performs at or above expected technical benchmarks. The ideal candidate brings deep engineering expertise, strong analytical skills, and a data-driven mindset to drive performance excellence across our portfolio.

Key Responsibilities

Reporting to the VP of Operations, this role provides hands-on technical and analytical support across the operating solar and storage portfolio, helping to execute day-to-day performance, reporting, and O&M initiatives.

Performance & Strategy

  • Support the VP of Operations in driving technical performance across the operating solar and storage portfolio.
  • Help develop and execute strategies to optimize system performance, uptime, and longevity while minimizing operational risk.
  • Work closely with asset management, development, and execution teams to support smooth handover of projects into operations.


Performance Monitoring, Optimization & O&M Management

  • Monitor platforms (e.g., PowerFactors, AlsoEnergy) and analytics tools daily to maintain real-time visibility into system performance.
  • Identify underperformance trends and root causes; work directly with O&M providers and internal teams to drive remediation.
  • Support troubleshooting of technical issues across solar components (inverters, trackers, combiner boxes) and storage components (battery management systems, thermal management) in coordination with O&M providers.
  • Coordinate with O&M providers on preventive and corrective maintenance activities to keep an effective maintenance program running.
  • Track contractual obligations related to warranties, spare parts, and equipment servicing, and flag issues for follow-up.
  • Assist with technical due diligence related to performance guarantees, warranties, and potential repowering.


Data, Reporting & Technology

  • Help standardize and prepare technical reporting for internal stakeholders and external partners (e.g., investors, lenders).
  • Maintain comprehensive asset records, including equipment specifications, warranties, outage history, and performance data.
  • Support evaluation and implementation of monitoring, diagnostics, and asset management software.
  • Use data tools (Python, SQL, Excel, Power BI, etc.) to build automation and streamline reporting and analysis.


Qualifications

  • Bachelor's degree in Electrical, Mechanical, or Renewable Energy Engineering.
  • 5+ years of experience in technical operations or asset management of utility-scale solar (storage a plus).
  • Deep understanding of PV system components, grid-tied systems, monitoring platforms, and performance modeling.
  • Familiarity with SCADA/DAS systems and analytics platforms.
  • Strong technical reporting and data analysis skills (e.g., Python, Excel, SQL).
  • Experience managing O&M contracts and enforcing technical warranties/guarantees.
  • Excellent communication and project management skills.
  • NERC/FERC knowledge is a plus.


Benefits & Compensation

We take the health and happiness of our employees seriously and offer outstanding benefits:

  • Company-funded and deeply subsidized benefit options for you and your family, effective the first day of the month following your start date.
  • Work-life balance supported by our responsible PTO / Vacation program.
  • 401(k) with company match.
  • Paid maternity and child-bonding leave.
  • A positive, collaborative, and diverse culture.
  • Social events, both onsite and remote.

Birch Creek Energy offers a competitive compensation package including base salary, and performance bonus, commensurate with experience. The annual salary for the successful candidate will depend on skills, relevant and demonstrated experience, education, training and certifications, and other factors permitted by law.

Occasional travel may be required for site visits.
Birch Creek Energy is an equal opportunity employer.

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