CES case studies
CES · Put your knowledge to work in context.
The Certified Energy Specialist (CES) is listed by the Association of Energy Engineers (AEE) among its professional credentials, but as of 2026-11-07 the dedicated CES page on the AEE site returned a 404 error, so no exam blueprint, item count, time limit, passing score, fee, or renewal terms could be confirmed from the official source. What can be verified is the structure AEE uses to organize its certification catalog: Energy Management, Energy Service & Commissioning, Sustainable Development, and Utility Services. The CES case studies are 5 cases and about 4,234 words.
1Compressed-Air Leak Program Under Production Pressure
Your team is asked to approve a compressed-air improvement package at a food-processing plant. The plant operates 7,000 hours per year, five days a week, with two 250-hp fixed-speed rotary screw compressors and one 100-hp backup.
888 words, about 4 min2Commissioning Shortfall in a Chiller-Plant ESPC
A hospital signed a 10-year energy savings performance contract for a chiller plant retrofit. The baseline was a 1,000-ton plant with two 500-ton constant-speed centrifugal chillers at 0.68 kW/ton, plus constant-speed condenser pumps and a two-cell cooling tower.
865 words, about 4 min3Scope 2 Claims for a Campus Solar VPPA
A university in a deregulated U.S. market consumes 28,000 MWh per year, with a peak demand of 4.6 MW.
783 words, about 4 min4Interruptible Rider, Demand Response, and Power Factor at a Cold Store
A cold-storage warehouse has a billing demand of 4.8 MW, average load 3.2 MW, and annual consumption of 27,600 MWh. The utility offers an optional interruptible rider: a 7/kW-month credit on 1,500 kW of subscribed demand, up to 20 events per year, each up to 6 hours, with 2-hour notice.
902 words, about 5 min5Heat-Pump Electrification at a Middle School
A school district is deciding whether to replace a 30-year-old natural-gas boiler plant at a 180,000 ft2 middle school with air-source heat pumps. The boiler plant uses 45,000 therms per year at 1.10/therm and has an estimated annual efficiency of 78%.
796 words, about 4 min