Framework overlap

Does NIST SP 800-171A Rev 3 cover ISO 50001:2018?

You hold NIST SP 800-171A Rev 3 and have been told to do ISO 50001:2018. Here is how much overlaps, control by control.

26% of ISO 50001:2018 you already have

NIST SP 800-171A Rev 3 already covers about 26% of ISO 50001:2018, leaving 34 of 46 controls as genuinely new work.

Already covered 0 Likely covered 12 New work 34

No control in NIST SP 800-171A Rev 3 maps directly to one in ISO 50001:2018. Everything counted as covered is covered because both map to the same third standard, which is what a crosswalk is, but it is an inference rather than a lookup.

What is genuinely new work

Nothing in NIST SP 800-171A Rev 3 reaches these. This is the list to scope.

3.1
Terms related to organization
3.2
Terms related to management system
3.3
Terms related to requirement
3.4
Terms related to performance
3.5
Terms related to energy
4.4
Energy management system
4.4.4
Energy baseline
4.4.5
Energy performance indicators
4.4.6
Energy objectives, energy targets and energy management action plans
4.5.2
Competence, training and awareness
4.5.3
Communication
4.5.4
Documentation
4.5.5
Operational control
4.5.6
Design
4.5.7
Procurement of energy services, products, equipment and energy
4.6
Checking
4.6.2
Evaluation of compliance with legal requirements and other requirements
4.6.3
Internal audit of the EnMS
4.6.4
Nonconformities, correction, corrective action and preventive action
4.6.5
Control of records
4.7.2
Input to management review
4.7.3
Output from management review
6.4
Energy performance indicators
6.5
Energy baseline
7.2
Competence
7.3
Awareness
7.5
Documented information
7.5.2
Creating and updating
7.5.3
Control of documented information
8.2
Design
8.3
Procurement
9.1
Monitoring, measurement, analysis and evaluation of energy performance and the
9.1.2
Evaluation of compliance with legal requirements and other requirements
9.2
Internal audit
Show the 12 you already have
10.1
Nonconformity and corrective action
10.2
Continual improvement
4.1
Understanding the organization and its context
4.2
Understanding the needs and expectations of interested parties
4.3
Determining the scope of the energy management system
4.6.1
Monitoring, measurement and analysis
4.7
Management review
5.1
Leadership and commitment
7.1
Resources
7.4
Communication
8.1
Operational planning and control
9.3
Management review

How this is calculated

Already covered means a mapping runs from a control in NIST SP 800-171A Rev 3 to that control. Likely covered means no direct mapping exists but both frameworks map to the same control in a third standard. New work means neither. We keep those separate rather than adding them into one friendlier number, because blending them would present a two-hop inference as a verified fact.

Coverage is not symmetric. Run it the other way and you will get a different number; both are correct.

From 332,959 cross-framework control mappings across 723 frameworks, 531 of them verified against their source documents. It does not tell you that you are compliant: a mapped control means the two standards ask for the same thing, not that you have done it.

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