You install a variable frequency drive on a motor, or replace an old compressor, on the promise of lower power bills. Six months later, someone asks how much was actually saved, and the honest answer is "the bill looks a bit lower, but the season changed too, and production went up." Without a before-and-after number tied to the equipment itself, savings claims stay guesses.
Signs you need this
- You cannot say how many units a specific machine used last month, only the whole factory's bill.
- A vendor promised a savings percentage and there is no way to check it against the meter.
- Energy audits happen once a year, as a one-time report, not as ongoing data.
- You are asked for energy data for a certification or a customer audit and have to estimate.
What a good one does
Clip-on current sensors go around existing cables without cutting power or rewiring the panel, so metering can start on machine after machine without a shutdown. Readings should be logged continuously, not sampled once a shift, so a dip from a changed load or a fault shows up quickly. The useful output is not a raw number but a comparison: this machine, this week, against its own baseline before the change, adjusted for how much it actually ran.
What it costs you
Clip-on metering is deliberately the cheap, fast way in — sensors per machine, plus a gateway that reads them and sends the data out. The real cost is discipline: someone has to define the baseline properly (same load, same hours) before the change is made, or there is nothing honest to compare against afterwards. Expect a short period of tuning thresholds so alerts are useful and not just noise.
Questions to ask any vendor
- Do sensors clip on to existing cabling, or does installation need a panel shutdown?
- Is a proper baseline captured before any change, or only readings after?
- Can you see per-machine data, or only a factory-wide total?
- Does the report suit an energy audit or certification body, or is it an internal chart only?
How we can help
We build monitoring for factory floors, from clip-on metering to the dashboard that turns readings into a real before-and-after comparison per machine. Tell us which equipment you want to measure at /industry, and start the conversation at talk to us.
