CEM study plan

Map the full CEM domain list against personal strengths and mark the four heaviest computational areas to attack first

Compute three-phase power, power factor, and load factor for five worked motor and panel scenarios without notes

Sketch the heat-transfer path through a wall assembly and calculate U-factor, R-value, and conductive plus infiltration load for one real building section

Build a one-page formula sheet covering electrical quantities, psychrometrics, and envelope heat loss

Size an air-side system by calculating sensible and latent loads from psychrometric chart readings

Diagnose five HVAC faults (low delta-T, excess outdoor air, simultaneous heating and cooling) and prescribe a corrective measure for each

Calculate boiler efficiency by both the input-output and heat-loss methods and reconcile the two results

Trace a steam distribution system and quantify flash loss, trap loss, and condensate return improvement savings

Calculate illuminance, lumen method cavity ratios, and lighting power density for three space types against a code allowance

Compare LED retrofit economics including lamp-lumen depreciation and controls savings

Diagram a BAS sequence of operation for scheduling, economizer, and static pressure reset

Evaluate three control strategies for savings potential and flag where AI or model-predictive control would and would not pay back

Select instruments for power, flow, temperature, and combustion measurement and state accuracy and calibration requirements for each

Design a level-one audit walkthrough procedure and data collection form for a mid-size facility

Compute NPV, IRR, simple payback, and lifecycle cost for competing efficiency measures and rank them

Reconcile energy use against utility bills using weather normalization and identify unexplained variance

Compare prescriptive versus performance compliance paths under a commercial energy code and identify the documentation each requires

Interpret a utility bill with demand ratchet, time-of-use periods, and power factor penalty and compute the effective blended rate

Evaluate real-time pricing, interruptible, and demand-response tariffs for a load profile and recommend the lowest-cost option

Outline the scope of an ASHRAE Level II audit and an ISO 50001 energy management system and state how each drives persistence

Size a battery system for peak shaving and demand reduction given a load profile and compute round-trip efficiency impact

Calculate payback for a solar PV array using production estimate, incentive structure, and net metering rules

Compare CHP, fuel cell, and standby generator options on efficiency, emissions, and economics

Identify interconnection, net metering, and demand-charge risks that erode distributed generation savings

Audit a compressed air system for leaks, artificial demand, and pressure setpoint and quantify each savings

Evaluate fan and pump affinity laws and calculate VFD savings for a throttled versus variable flow system

Measure and benchmark an industrial process against a specific-energy baseline and identify the top three loss centers

Rank industrial measures by cost of conserved energy and build a phased implementation schedule

Complete two full-length timed practice exams under test conditions and score by domain

Re-drill every missed item from the error log until each concept is explained aloud without notes

Review the formula sheet and rebuild it from memory, filling gaps

Confirm exam-day logistics, reference materials allowed, and calculator policy