At E Source, we help utilities make sense of complexity in a rapidly changing landscape, and we’re looking for an Engineering Intern to help shape how that impact shows up in the world.

E Source is a research, data/analytics, and technology focused professional services firm focused exclusively on the Utility industry in North America. We help utilities target and serve their customers more effectively, enhance and optimize their grid, and leverage operating best practices and technologies to manage their business more effectively. Headquartered in Texas, we have 450+ employees across the US and Canada. Learn more at www.esource.com

We are seeking a paid engineering intern during the summer of 2026 to support the company’s evaluation of energy efficiency programs in the Midwest. In this role, you will learn about the role of utilities in energy efficiency and the types of programs offered to help consumers save energy; hone your research skills and learn about the field of program evaluation; and help contribute to understanding the impact of energy efficiency on communities in Illinois. We’re ideally looking for someone with an engineering background and interest in energy systems.

In this role, you will:

• Work directly with members of E Source’s portfolio evaluation team, which includes engineers, social scientists, statisticians, public policy experts and data scientists

• Analyzing program data utilizing Excel or other data analysis tools

• Evaluating and developing methodologies and algorithms to determine electric and fossil fuel savings for residential, commercial, and industrial energy efficiency technologies and programs

• Calculating energy and demand savings associated with energy efficient measures in residential, commercial, and industrial buildings

• Producing high quality reports and/or presentations based on engineering methods and findings

• Conducting other evaluation research as assigned

You’re likely a great fit if you:

• Open to students currently working toward an associate’s, bachelor’s, or graduate degree in Engineering, Physics, Environmental Sciences, or related field

• An interest in the energy industry and energy efficiency

• Proficiency with Microsoft Office Suite, particularly Microsoft Excel

• Understanding of the engineering principles underlying building energy use

• Detail oriented and strong attention to quality assurance

• Excellent written and verbal communication skills, and technical research abilities

• Ability to juggle multiple time-sensitive priorities

• Attention to detail

And even better if you:

• Coursework, projects, and/or professional experience (internship/co-op) related to energy consumption, energy efficiency, clean energy, and sustainability in the built environment

• Quantitative research experience; experience with data analysis and data analysis tools such as Python

• Familiarity with ASHRAE, ENERGY STAR, IPMVP, IECC, and other residential and commercial building codes, standards, and protocols

• Experience with energy modeling, bin data analysis, and data logging with various types of equipment

• Experience and familiarity with residential and/or commercial building energy simulation modeling applications (eQuest, Open Studio, ENERGYPlus, ENERGYPro, EnergyGauge, etc.)

Internship Details:

• This is a remote opportunity out of Illinois. We are open to other US locations (if the candidate is associated with IL). This internship will involve regular coordination and remote meetings with E Source staff.

At E Source, you’ll work alongside people who are thoughtful, curious, and deeply knowledgeable about utility and energy systems. We value clarity over jargon, substance over flash, and collaboration over ego. You’ll have the opportunity to grow your skills, contribute to meaningful work, and help shape a company that plays a real role in how the energy future unfolds.

The budgeted hourly rate for this position is $30/hour USD.

Applicants must be authorized to work for any employer in the US or Canada. We’re unable to sponsor or take over sponsorship of employment visas or Labour Market Impact Assessments (Cdn) at this time.

All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran.

Employees of E Source are encouraged to apply. To foster a positive work environment and company culture, we support our employees in their career growth at E Source. If you are interested in similar job opportunities in the future, visit the E Source careers page for a listing of all open positions and contact Human Resources.

We contact applicants directly via email using only our designated company email addresses with the domain of @esource.com. Please do not provide personal information to anyone over email and be wary of other accounts impersonating businesses.

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