Most facilities teams know the list: LED lighting, controls, drives, then the heating plant. What they rarely have is the capital to do it all at once. Phased energy efficiency upgrades answer that by letting the savings from one stage pay for the next.
That is the case the National Electrical Manufacturers Association (NEMA) made in a recent Facilities Dive interview. It is a sound model. In our experience it breaks down at the same point every time: nobody can show the finance team where the first round of savings went.
The ladder NEMA describes is the right one
NEMA’s sequence starts with low-cost measures: occupancy-controlled LED lighting, energy monitoring and submetering. Next come variable frequency drives (VFDs) on fans, pumps and air handlers, tied into a building or energy management system. Electrical and heating upgrades follow, and storage or backup power for peak shaving and demand response comes last.
Each step builds on the one before it. Submetering also produces the interval data that building performance standards and ENERGY STAR reporting already ask for, so the first rung pays twice.
Where phased energy efficiency upgrades usually stall
NEMA names the barriers plainly: facilities managers who are unfamiliar with drives, owners who hesitate to spend, and finance teams fixed on short paybacks. We would add a fourth. The savings from stage one usually vanish into a lower utility bill that nobody attributes to anything.
When the next budget round arrives, there is no ring-fenced pot and no evidence. The program stops after the easy wins. A saving nobody can prove is a saving nobody will reinvest.
Plants have the strongest case, and the most motors
The model is framed around offices, especially older Class B stock, but it fits manufacturing sites at least as well. A typical plant runs dozens of pumps, fans and compressors at fixed speed against throttling valves and dampers.
NEMA’s Zack Valdez put the motor saving from a drive at roughly 30% in his example, and said drive costs in industrial settings can be recovered in under three years. On a process line with long running hours, that is the stage that funds the heat pump or heat recovery design later in the sequence. See how this applies on manufacturing sites.
Set up the measurement before the first lamp is changed
The fix is cheap and has to come first. Before stage one, agree a baseline: twelve months of metered energy, normalized for production or weather. Pick a measurement and verification (M&V) method under the International Performance Measurement and Verification Protocol (IPMVP) for each stage. Then agree with finance that verified savings return to the program, not the general budget.
An investment-grade energy audit, typically an ASHRAE Level II for a building or a process-focused audit for a plant, gives you the ordered list and the baseline in one piece of work. Our advisory team can scope it.
The question to take to the board is simple: if stage one saves money, who decides where that money goes?
Staged upgrades depend on each round funding the next. Without a baseline and verified savings, the program stalls after the easy wins.
