Chart power use after closing
Graph meter data against operating hours, and if use stays high overnight, pick systems for a closer look.
Career profile
Energy Efficiency Engineer
Energy efficiency engineers find where buildings and plants lose or waste power, then pick fixes.
Tie meter numbers to machines on site, work out whether an upgrade pays for itself, and later confirm the predicted savings really showed up.
A day in the life
Walk the site with an operator
Compare running lights and heating or cooling units with meter records, then ask how people use the building.
Price out an upgrade
Set install cost against projected energy savings on a spreadsheet, afterward explaining the assumptions to the facilities manager.
Confirm a controls change worked
If data after the change shows a fan running off schedule, probe its settings with a controls technician.
Quick facts
Usually a bachelor's degree
United States
Not displayed
There is no separate national median for this specialty.
Not displayed
A national growth rate and annual openings estimate are not available for this specialty.
Quick orientation
Preparation, pay & outlook
Preparation
Usually a bachelor's degreeEngineering study provides the usual foundation; practical assessment experience helps you apply it.
Pay
Not displayedThere is no separate national median for this specialty.
Outlook
Not displayedA national growth rate and annual openings estimate are not available for this specialty.
Fit, tradeoffs & changing tools
You might like this if…
- You like following an unexpected number back to its physical cause.
- You can explain a calculation to someone who needs to decide what to do.
- You are willing to revisit a promising idea when measurements disagree.
Things to weigh
- A technically sound improvement may wait for budget approval. Part of your work is making the cost and benefit understandable.
- Some roles combine long stretches of spreadsheet review with travel to offices or project locations.
Where AI may help
Building software can combine meter readings, flag equipment problems, and sometimes adjust controls automatically.
What people still lead
You check whether a flagged problem is real and work with operators to turn the finding into a usable improvement.
What we can’t predict yet
How much troubleshooting and control adjustment becomes automatic will depend on the building's sensors, connected equipment, and reliability of the software.
Pay in context
Earnings
Use these broader engineering wages as a comparison point, not an estimate of energy efficiency engineers' pay. Your experience, qualifications, and project responsibilities can affect an offer.
A broader national pay benchmark
In 2025, the broader Engineers, All Other group had a U.S. median of $122,930 a year, or $59.10 an hour. The lowest-paid 10% earned $66,810 or less; the highest-paid 10% earned $189,950 or more. These figures cover several engineering specialties and experience levels, not starting and senior salary steps.
Workplace pay context
For that same broader group, older national figures show average annual wages of $107,360 in architectural, engineering, and related services and $134,050 in scientific research and development services in May 2023. These are historical industry averages across specialties and experience levels; they do not predict what an energy-efficiency role in either setting would pay today.
Getting started
Combine engineering study with plant assessments
- What the route involves
- At a participating university, pair your engineering degree with Industrial Training and Assessment Center work: visit plants with faculty, take measurements, and help calculate improvement costs.
- What it can lead to
- You build experience using diagnostic instruments and presenting recommendations to clients—skills you can bring to energy-efficiency work.
- What to check
- University assessment teams include upper-level and graduate students. Participation depends on the school and supplements the degree.
Transfer into mechanical engineering
- What the route involves
- Start with transferable mathematics, physics, and engineering courses at a community college, then complete a mechanical engineering bachelor's degree. Elgin Community College and Southern Illinois University Carbondale publish such a pathway.
- What it can lead to
- The degree adds heat transfer, thermodynamics, and design study for careers that include energy engineering.
- What to check
- Have both schools check your course plan. A transfer guide does not guarantee admission, and current catalog requirements take priority.
Build an engineering foundation and look for experience measuring real systems. You can begin at a university or use a planned community-college transfer route.
After entry
Career paths
This starts where the entry routes leave off: early work, growing capability, and advancement or specialization.
Get established
Make your measurements and calculations easy to check. Learn to turn field notes into a clear assessment report.
Own an improvement
Follow a problem from diagnosis through implementation and verification, including explaining the new operation to building staff.
Lead larger projects
Move toward managing energy upgrades across several buildings, coordinating contractors, budgets, schedules, and performance checks.
Where you can work
University facilities departments
You work with the same campus buildings and central heating or cooling plants over time. Operations staff and contractors help carry projects from analysis into daily use.
- Office
- Field work
- Indoors
Utility-program consulting teams
You review customers' proposed upgrades and savings calculations against rebate requirements. Work spans different businesses and equipment, with technical reviews and conversations with contractors.
- Office
- Travel
Try it
See whether the job clicks before you commit to the path.
Try a paper lighting estimate: assume ten 20-watt lights run for eight hours a day. Calculate daily kilowatt-hours as watts × hours ÷ 1,000, then estimate the savings from running them for six hours. List what you would need to check before recommending that change. Notice whether you enjoy both the arithmetic and questioning the assumptions.
Stay safe: Use the imagined setup; do not change real lighting or building controls.
Sources
- O*NET OnLine. Energy Engineers, Except Wind and Solar — 17-2199.03. Accessed 2026-10-03.
- U.S. Bureau of Labor Statistics. Occupational projections and worker characteristics. Accessed 2026-10-04.
- O*NET OnLine / U.S. Bureau of Labor Statistics. National Wages: Energy Engineers, Except Wind and Solar. Accessed 2026-10-04.
- U.S. Department of Energy. Energy Management Information System Capabilities. Accessed 2026-10-03.
- U.S. Department of Energy. Operations That Support Energy Management Information Systems. Accessed 2026-10-03.
- U.S. Department of Energy. Industrial Training and Assessment Centers. Accessed 2026-10-03.
- Southern Illinois University Carbondale. Elgin Community College to Mechanical Engineering Transfer Guide. Accessed 2026-10-03.
- Leidos. Senior Energy Engineer — Effingham, Illinois. Accessed 2026-10-04.
- Columbia University. Senior Energy Engineer — Job 557900. Accessed 2026-10-04.
- U.S. Bureau of Labor Statistics. Occupational Employment and Wages, May 2023 — Engineers, All Other. Accessed 2026-10-04.