NREL Internship (Year Round) - Renewable Energy Optimization Modeling & Analysis in Golden, Colorado

Posting Title

Internship (Year Round) - Renewable Energy Optimization Modeling & Analysis



CO - Golden


Position Type

Intern (Fixed Term)


Hours Per Week



Job Summary

NREL is seeking a student intern to support technical analysis projects in the Engineering and Modeling Group, Integrated Applications Center (IAC), Energy Systems Integration (ESI) directorate. The Center helps clients including federal agencies, state and local governments, communities, and the private sector to develop energy strategies, analyze opportunities, and implement an integrated portfolio of renewable energy (RE) and energy efficiency (EE) technologies to meet energy goals.

In this internship, the student will use EE and RE analysis tools to assist NREL engineers in evaluating EE and RE opportunities for federal agencies, universities, and communities. This intern will also contribute to development of the REopt modeling platform for energy systems integration and optimization. REopt is used to evaluate renewable energy, storage, and conventional energy options and recommend a mix of technologies and operating strategy that minimizes the lifecycle cost of energy for a site. REopt aggregates energy systems data including electric and thermal energy use, utility rates, incentives, and renewable energy resource data to inform technology and economic decisions. The intern will conduct analysis using REopt and other EE/RE analysis tools to evaluate options for deployment of renewable energy, energy efficiency, storage, and conventional generation in buildings, campuses, or microgrids.

Specific Job Duties include:

• Work as part of a software development team to develop and maintain models that analyze energy efficiency and renewable energy opportunities

• Develop, test, and document code to model renewable technology energy generation and costs, process user data inputs, and present data outputs to the user

• Evaluate technical and economic feasibility of energy efficiency and renewable energy projects using EE and RE analysis tools such as REopt, SAM, HOMER, and RetScreen

• Collect information in various forms and from various sources and process it into REopt inputs

• Research data inputs to reconcile discrepancies in data from different sources

• Research RE incentives and utility policies

• Correspond with clients regarding data provided, clarifications, additional requests, and reminders for missing data

• Correspond with clients regarding goals, constraints, and assumptions of analysis

• Present results to clients and revise results and reports in response to client comments

Additional Required Knowledge, Skills, and Attributes include:

• Programming experience: fluency in Python and ability to quickly pick up other languages

• Experience creating energy system models

• Expert knowledge of MS Excel

• Excellent communication and teamwork skills

• Ability to collaborate with team members in a flexible work environment

• Ability to work independently

• High standards of work quality

• Smart, intellectually curious, analytical, and tenacious in finding solutions. Adaptable to a variety of roles and projects.


Required Education, Experience, and Skills

Must be enrolled as a full-time student in a degree granting program, or graduated in the past 12 months from an accredited institution.

Internship period cannot exceed 12 months past graduation.

Minimum of a 3.0 cumulative grade point average.

Please Note:

Be sure to attach your current transcript (unofficial transcripts are acceptable) on the "Submit Attachments" Page during the application process in order for your GPA and student status to be verified.


Preferred Qualifications

• Experience using EE/RE software tools such as SAM, HOMER, and RETscreen

• Experience applying engineering skills to EE and RE problems.

• Xpress or other optimization software experience

• Basic knowledge of economics/ finance/cash flow analysis

• Experience working with and managing large amounts of data

• Experience using scripting languages for automating computer simulations

• Familiar with collaborative version control software such as Git or SVN


Submission Guidelines

Please note that in order to be considered an applicant for any position at NREL you must submit an application form for each position for which you believe you are qualified. Applications are not kept on file for future positions. Please include a cover letter and resume with each position application.


EEO Policy

NREL is dedicated to the principles of equal employment opportunity. NREL promotes a work environment that does not discriminate against workers or job applicants and prohibits unlawful discrimination on the basis of race, color, religion, sex, national origin, disability, age, marital status, ancestry, actual or perceived sexual orientation, or veteran status, including special disabled veterans.

NREL validates right to work using E-Verify. NREL will provide the Social Security Administration (SSA) and, if necessary, the Department of Homeland Security (DHS), with information from each new employee’s Form I-9 to confirm work authorization. For additional information, click here at .

The National Renewable Energy Laboratory (NREL) is a leader in the U.S. Department of Energy’s effort to secure an energy future that is both environmentally and economically sustainable. With locations in Golden, Boulder and Washington D.C., NREL is the primary laboratory for research, development and deployment of renewable energy technologies in the United States. The NREL mission is to develop renewable energy and energy efficient technologies and practices, advance related science and engineering, and transfer knowledge and innovation to address the nation’s energy and environmental goals.