An energy engineer finds where buildings and plants waste energy, proves it with data, and designs fixes that pay for themselves. This roadmap takes you from the physics and math behind energy use, to running real audits and models, to leading commissioning, measurement and verification, and utility-scale programs. You do not need to be a genius. You need to be curious about how things work and willing to measure, calculate and explain clearly. Every resource here is free, and each stage ends with a project you can show to employers.
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Every stage from beginner to expert, with lessons, practice drills, projects, interview questions and free resources. Free with a Rolearch account.
Stage 1 of 3 · about 14 weeks
Understand how energy moves through buildings and equipment, and do the core calculations by hand and in Excel.
Thermodynamics and heat transfer basics
Every energy saving comes from moving less heat or doing the same work with less input. If you understand conduction, convection, radiation and the first and second laws, equipment specs and savings claims stop being magic.
Electricity and power basics
Most energy projects touch electrical loads: motors, lighting, and transformers. Knowing kW vs kWh, power factor and three-phase power lets you read a bill and size a saving.
Reading utility bills and tariffs
Money is how energy savings are judged. Demand charges, time-of-use rates and ratchets decide which project is worth doing.
Excel for engineering analysis
Excel is the daily tool in this job. You will clean meter data, build savings calculators, and make charts clients understand.
HVAC fundamentals and psychrometrics
HVAC is often the largest energy use in a building. You need to know what chillers, boilers, air handlers and economizers do and why.
Then 2 more stages (about 58 weeks in all) with lessons, drills, projects, 6 interview questions with strong answers and free resources.