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Energy Engineer Intern Jobs in California (NOW HIRING)

Estes Energy

2026 Fall Engineering Intern

San Francisco, CA · On-site

$19.75 - $25.50/hr

Fall 2026 (Sept-Dec, dates flexible) · Type: Full-time or part-time internship About Estes Energy ... As an Engineering Intern, you'll own a meaningful slice of a live project, work shoulder-to ...

APTIM

Civil Engineering Intern

Concord, CA · On-site

$25 - $34.11/hr

The Civil Engineer Intern will support civil engineering teams in the planning, design, analysis ... energy customers. Together, we create sustainable and resilient communities for all. What you can ...

Tetra Tech, Inc.

Site/Civil Engineering Intern

Oakland, CA · On-site

$20 - $26.25/hr

Today we stand as a market leader, offering cutting-edge solutions in water, environment, energy ... Essential Functions Tetra Tech is seeking a Site/Civil Engineering Intern to support civil/site ...

Tetra Tech

Site/Civil Engineering Intern

Oakland, CA · On-site

$20 - $26.25/hr

Today we stand as a market leader, offering cutting-edge solutions in water, environment, energy ... Essential Functions Tetra Tech is seeking a Site/Civil Engineering Intern to support civil/site ...

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Showing results 21-40

All JobsEnergy Engineer Intern JobsEnergy Engineer Intern Jobs in California

Energy Engineer Intern information

See California salary details

$11

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How much do energy engineer intern jobs pay per hour?

As of Aug 13, 2026, the average hourly pay for energy engineer intern in California is $20.97, according to ZipRecruiter salary data. Most workers in this role earn between $16.97 and $23.94 per hour, depending on experience, location, and employer.

What does an energy engineer intern do?

An Energy Engineer Intern assists professional engineers in analyzing and improving energy systems within buildings, industrial facilities, or renewable energy projects. Their tasks often include collecting and interpreting data, performing energy audits, developing recommendations for efficiency improvements, and supporting the design or implementation of energy-saving measures. Interns also help with research, report writing, and sometimes participate in fieldwork or site visits. This role provides hands-on experience with real-world energy challenges and helps build a foundation for a future career in energy engineering.

What is the difference between Energy Engineer Intern vs Mechanical Engineering Intern?

AspectEnergy Engineer InternMechanical Engineering Intern
Required CredentialsTypically pursuing or holding a degree in energy engineering, mechanical engineering, or related fieldsUsually pursuing or holding a degree in mechanical engineering or related disciplines
Work EnvironmentOften involved in energy systems, sustainability projects, and renewable energy initiativesEngaged in product design, manufacturing processes, and mechanical systems
Employer & Industry UsageUsed by energy companies, consulting firms, and industrial plants focusing on energy efficiencyCommon in manufacturing, automotive, aerospace, and product development sectors

While both roles involve engineering principles, an Energy Engineer Intern focuses on energy systems, efficiency, and sustainability projects, whereas a Mechanical Engineering Intern works on mechanical design, manufacturing, and product development. The roles share similar educational backgrounds but differ in industry focus and project types.

What are the key skills and qualifications needed to thrive as an energy engineer intern?

To thrive as an Energy Engineer Intern, you need a solid foundation in engineering principles, energy systems, and data analysis, often supported by coursework in mechanical or electrical engineering. Familiarity with tools like AutoCAD, MATLAB, and energy modeling software such as RETScreen or EnergyPlus is typically expected. Strong problem-solving abilities, attention to detail, and effective communication skills help interns stand out in collaborative project environments. These skills and qualities are crucial for accurately analyzing energy data, contributing to efficiency projects, and supporting the technical needs of energy engineering teams.

What are the most commonly searched types of Energy Engineer jobs in California?

The most popular types of Energy Engineer jobs in California are:

What are popular job titles related to Energy Engineer Intern jobs in California?

For Energy Engineer Intern jobs in California, the most frequently searched job titles are:

What job categories do people searching Energy Engineer Intern jobs in California look for?

The top searched job categories for Energy Engineer Intern jobs in California are:

What cities in California are hiring for Energy Engineer Intern jobs?

Cities in California with the most Energy Engineer Intern job openings:

Energy Engineer Intern jobs near you
Infographic showing various Energy Engineer Intern job openings in California as of August 2026, with employment types broken down into 79% Full Time, 18% Part Time, 2% Temporary, and 1% Contract. Highlights an 93% Physical, 3% Hybrid, and 4% Remote job distribution, with an average salary of $43,617 per year, or $21 per hour.

Test Automation Engineer Intern - Fall 2026

Redwood Materials

San Francisco, CA • On-site

$41 - $47.50/hr

Full-time, Internship

Posted 8 days ago

Redwood Materials rating

7.6

Company rating: 7.6 out of 10

Based on 8 frontline employees who took The Breakroom Quiz

23rd of 90 rated recycling and waste

Job description

About Redwood Materials
Redwood is localizing a global battery supply chain that seamlessly integrates recovery, reuse, and recycling - keeping critical minerals in circulation and driving the energy transition. Founded in 2017, we're delivering low-cost and large-scale energy storage and producing battery materials in the U.S. for the first time, all from batteries we already have.
Test Automation Engineering Intern
Redwood Energy is building some of the fastest, lowest-cost energy storage in the U.S. from both new battery modules and second-life EV packs. Second-life hardware arrives with a history - different chemistries, capacities, and states of health - and every unit has to be proven safe and reliable before it ships. That proof comes from test: the automated systems that exercise the firmware and electronics inside our products and decide whether they're ready for the field.
Our test engineering team builds those systems - the test stands on the production floor, the hardware-in-the-loop benches that validate firmware releases, and the CI pipelines that tie them together. As a Test Automation Engineering Intern, you'll work alongside our engineers building the next generation of this test capability. You'll write Python that drives real instruments and real battery hardware, help bring up new test stands from the bench up, and debug failures where the root cause could live in the test code, the firmware, or the unit under test. This is a great opportunity to apply what you've learned in coursework to production test systems, with mentorship from experienced engineers along the way.
Responsibilities will include:
  • Test Automation: Write and maintain Python test automation for firmware and hardware validation, using pytest and our internal test frameworks.
  • Instrument Control: Develop drivers and tooling for programmable power supplies, electronic loads, data acquisition, and switching hardware over protocols like SCPI, CAN, and Modbus.
  • Test Stand Bring-Up: Help bring up new test stands - from fixtures and wiring through the software that sequences them - as we expand our validation capability.
  • System Debugging: Investigate real failures on real equipment, using CAN traces, instrument logs, and bench tools to determine whether the fault lies in the test code, the fixture, or the unit under test.
  • Continuous Integration: Add regression coverage to our CI pipelines so firmware changes are validated automatically rather than by hand.
  • Documentation & Process: Contribute to documentation and test processes that support taking test systems from prototype toward production.
  • You'll own a scoped project end to end and present your results to the engineering team at the close of the internship.

Desired Qualifications:
  • Background: Currently pursuing a BS or MS in Electrical Engineering, Computer Engineering, Computer Science, Mechatronics, or a related field.
  • Programming Foundations: Working proficiency in Python, including comfort reading and modifying a codebase you did not write.
  • Testing Experience: Experience writing automated tests with pytest or a comparable framework, from coursework, projects, or prior internships.
  • Version Control: Experience with Git and a pull-request-based development workflow.
  • EE Fundamentals: Solid grasp of circuit basics - voltage, current, resistance, and power, and how they relate - sufficient to predict what a measurement should read and recognize when it doesn't.
  • Hardware Fundamentals: Able to read a schematic, wiring diagram, or datasheet and act on it; hands-on experience working safely around energized equipment - power supplies, loads, or battery hardware - from lab work, projects, or prior internships.
  • Communication Protocols: Familiarity with CAN, Modbus, SCPI, or other instrument and industrial protocols is a plus, even if only from classwork or personal projects.
  • Linux: Familiarity with the Linux command line is a plus.
  • Curiosity & Rigor: A safety-conscious mindset, strong attention to detail, and eagerness to learn how production test systems are built. Prior industry or energy storage experience is not expected.

In accordance with California pay transparency laws, the salary range for this position is listed below. Actual compensation may vary based on a variety of factors, including experience, education, and skills.
California Pay Range:
$41-$47.50 USD
The position is full-time. Compensation will be commensurate with experience.
We collect personal information (PI) from you in connection with your application for employment with Redwood Materials, including the following categories of PI: identifiers, personal records, professional or employment information, and inferences drawn from your PI. We collect your PI for our purposes, including performing services and operations related to your potential employment. If you have additional privacy-related questions, please contact us at privacy@redwoodmaterials.com.

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