ISO 50001 clauses an auditor tests with numbers
ISO 50001:2018 is the international standard for an energy management system, certified by an accredited body after audit. Several of its clauses can only be met with measured energy data. Aqueduct supplies that data: consumption by significant energy use, indicators and weather-normalized baselines.
Who it applies to
Any organization, of any size, that wants a structured way to manage energy. Certification is voluntary, but customers, regulators and schemes such as the UK's ESOS accept it as evidence. The standard follows plan, do, check, act and shares its structure with ISO 9001 and ISO 14001.
The current edition is ISO 50001:2018; the 2011 edition is withdrawn. Certification audits now include the climate action changes added by amendment.
The clauses that need measured data
Clause numbers and titles from ISO 50001:2018. Your certification body audits the system.
| Requirement | What it asks for | Data Aqueduct supplies |
|---|---|---|
| 6.3 Energy review | Analysis of energy use and consumption, identifying significant energy uses. | Sub-metered consumption ranked by use, system and site. |
| 6.4 Energy performance indicators | Indicators that show whether energy performance is improving. | kWh per unit, per square meter or per degree day, calculated from interval data. |
| 6.5 Energy baseline | A reference against which indicators are compared, revised when conditions change. | Regression baselines on degree days and production, with each revision logged. |
| 6.6 Planning for collection of energy data | What is measured, how and how often. | A register of every meter and sensor with its interval, location and calibration date. |
| 8.1 Operational planning and control | Operating criteria for significant energy uses. | Schedules and setpoints compared with actual operation, with deviations flagged. |
| 9.1 Monitoring, measurement, analysis and evaluation | Evaluation of energy performance and of the management system. | Performance against baseline by period, exported for management review. |
Status of the standard
ISO reviewed and confirmed the 2018 edition and published Amendment 1, climate action changes.
Source: ISO 50001:2018Median savings from energy information systems in the DOE Smart Energy Analytics Campaign; fault detection reached 9%.
Source: US DOERelated standards
Sources2 references cited on this page
sites in 21 countries run on Aqueduct.
and 9 clinics in one of India’s top hospital chains.
US airport running water intelligence on Aqueduct.
of commercial real estate under Aqueduct.
FMCG manufacturing campus.
operations run on Aqueduct.
Related
Common questions
Yes, if the energy baseline is normalized. A baseline regressed on cooling and heating degree days separates the weather effect, so the indicator reflects what the team changed. Aqueduct fits that regression from meter history or uploaded bills. See weather normalization.
The standard sets no number. The energy review decides which uses are significant, and the data collection plan says how each is measured. Most sites need sub-meters on their largest few loads.
When indicators no longer reflect energy performance, after major changes to operations or static factors, or as a method set in advance requires. Aqueduct keeps each baseline version with its reason and date, so the auditor can follow the change.
Evidence that significant energy uses were identified from analysis, that indicators are compared with a baseline, and that the data collection plan is followed. Aqueduct supplies sub-metered consumption, indicator trends and a meter register, and an accredited certification body audits the system.
See Aqueduct on your own facility.
Bring a site, a utility bill or a question. We will show you where the loss is.