Enterprise (Multi-Site) Approach

SEP 50001 logoThe deep and continuing energy savings typically achieved with ISO 50001 become more accessible when multiple sites within a company share a common energy management system (EnMS).

“The enterprise approach enabled us to learn from the other participating locations of the company and to leverage best practices.”

Robin Higgs
3M Decatur Site Manager

The Superior Energy Performance 50001 (SEP 50001) program offers enterprise (multi-site) certification with sampling for both the EnMS and energy performance improvement. This approach increases energy savings across an organization while reducing the level of effort and implementation costs at each site. (Also, multiple sites within close geographic proximity can be certified as a single site to streamline efforts and reduce costs.)

How It Works

Typically, a central office provides tools, training, and resources to individual sites, tailoring responsibilities to take advantage of existing corporate and site-level expertise.

The central office function also enables the use of sampling, which reduces the number of sites that need to be audited for ISO 50001 certification. In sampling for SEP 50001, third-party auditors verify ISO 50001 EnMS and energy performance improvement at a selected subset of the implementing sites.

Certification across multiple sitesOrganizations pursuing SEP 50001 program certification across multiple sites can certify:

  • Multiple sites under one central office
  • Multiple sites within close geographic proximity as one facility.

More details about how to use the enterprise approach are included in the Certification Protocol.

Organizations Using Enterprise Approach

For insights, view case studies from organizations that have used an enterprise approach. (These organizations used an earlier program version of SEP 50001 that did not yet offer sampling of energy performance.)




Schneider Electric

6 sites

3 sites

3 sites

19 sites

$3.6 million annual energy cost savings

$4.1 million annual energy cost savings

$9.4 million annual energy cost savings

$1.8 million annual energy cost savings

View the Enterprise-wide Fact Sheet and the paper, “ISO 50001 and SEP Faster and Cheaper – Exploring the Enterprise-wide Approach,” for more details on benefits.

Cost-Benefit Analysis of Enterprise Approach

SEP quoteFour companies expanded SEP 50001 program certification to multiple sites, then tallied results and compared multi-site costs to their initial single-site costs. See the study. Results include:

  • Ongoing energy cost savings that average about $600,000 per year per site, with nearly three-quarters of those savings typically provided from low- or no-cost actions
  • Reduced training costs
  • Reduced internal labor
  • Reduced internal and external consultant costs
  • Reduced third-party certification costs

Who is Enterprise Approach Intended for?

The ISO 50001/ SEP 50001 enterprise-wide approach works best for organizations with one or more of the following characteristics: 

  • An established corporate energy goal;
  • An existing energy management program;
  • Implementation of ISO 50001 at one site;
  • Experience with ISO management systems, such as ISO 9001 or ISO 14001;
  • Multiple sites that can benefit from sharing best practices.

Tools Supporting the Enterprise-Wide Approach

Two of the companies, 3M and Cummins, centrally developed their own suites of tools for use by their sites. Cummins has generously agreed to share an external version of its Energy Review Tool through DOE to assist other companies. The Microsoft Excel®-based tool takes users step-by-step through the ISO 50001-required process for conducting an Energy Review, setting an Energy Baseline, and establishing meaningful Energy Performance Indicators.

In addition, check out the 50001 Ready Navigator and Tools, Expertise & Training.