What to establish before acting
Gather electric and gas bills, intervals, production measures, shift calendars, shutdowns, and major equipment information. Compare similar products and operating conditions where practical. Motors, compressed air, process heat, and ventilation need qualified system review. Planned line additions or closures should also inform supply tolerances and term. A plant with uncertain load can face different contract risk from a stable baseload facility, even at the same annual volume. Preserve service and production quality when evaluating controls.
Illustrative decision boundary
An illustrative plant reduces measured compressor input by 5 kW for 4,000 comparable hours, giving 20,000 kWh. Use the applicable avoidable tariff rate for energy benefit and test demand separately. Do not count the same change again as an unrelated motor-efficiency project.
Documents for a useful review
- Complete meters, fuel units, intervals, shifts, output, and shutdown history.
- Equipment measurements and qualified system-assessment scope.
- Supply tolerances, planned changes, tariff calculations, and verification plan.
Questions & answers
Which metric should I track?
Use energy and demand alongside suitable production measures and shift data. Floor-area intensity alone can mislead when process loads or product mix dominate consumption.
Are larger factories guaranteed lower supply rates?
No. Volume is one input; load timing, location, credit, term, flexibility, and component scope also affect offers. Compare actual matching proposals.
Should every motor receive a speed drive?
No. The driven load, torque, minimum flow, controls, harmonics, safety, and process requirements determine suitability. Qualified engineering should assess the application.
Can a fixed gas price cover production swings?
Only the contract defines tolerances and settlement. Check nominations, balancing, transport, service firmness, and shutdown or expansion scenarios before assuming full protection.
What should an energy project preserve?
Required throughput, product quality, safety, ventilation, pressure, and other process conditions. Verify the same useful service before reporting measured savings.
Should a planned shutdown affect a block purchase?
Yes. Reduced use can create excess fixed quantities and market settlement exposure. Model the actual shutdown intervals and contract excess-volume formula before committing a predictable-baseload assumption.
Sources & scope
Primary references reviewed October 15, 2026. These sources support the stated concepts; actual tariffs, program rules and signed agreements govern the account. Decision examples and operational worksheets are original educational analysis.
- DOE: Improving Compressed Air System Performance, third edition (2016), preserved by GovInfo
DOE technical sourcebook on system assessment, maintenance and operating practices; not current program or policy guidance. - DOE: High-efficiency electric motors
Motor efficiency, variable-speed applications, and equipment-system context. - DOE FEMP: Evaluating your utility rate options
Demand, ratchets, time-of-use rates, coincident peaks, and standby charges. - EIA: Natural gas customer choice programs
Gas marketing, distribution, and differences among choice programs.