Current/OS is an open, non-profit partnership of electricity stakeholders and manufacturers defining standards for Direct Current (DC) electrical systems in buildings, data centers and infrastructure.
NMi tests and certifies smart meters, EV charging equipment, batteries, single loads and other connected electrification hardware against the metrology, EMC, cybersecurity and interoperability requirements that Current/OS listing depends on.
Requests are submitted and tracked through the Current/OS Certification Scheme. NMi manages scoping, testing and certificate issuance from there.
Notified Body
Legal metrology and related electrification schemes
ISO/IEC 17025 & 17065
Accredited testing and certification
One group
Specialist operating companies, one point of contact
Global reach
Certification recognised across the EU and beyond
— NMi's role
Independent conformity assessment, from scope to certificate.
Current/OS is an open, non-profit partnership of electricity stakeholders and manufacturers defining standards for Direct Current (DC) electrical systems in buildings, data centers and infrastructure.
Assess
Products are assessed against the Current/OS certification requirements.
Review
The required technical documentation is reviewed.
Manage
NMi manages the certification process end to end.
Certify
Certification is issued where the applicable requirements have been successfully met.
Notify
NMi notifies the Current/OS scheme of certified products for inclusion within the scheme.
— Products
Scope that grows with the scheme.
Current/OS certification capabilities continue to expand as the scheme develops. NMi is progressively extending the range of products supported under the scheme, with additional product categories to be added as the certification programme matures.
— Why NMi Group
Independent technical assurance, group-wide.
Manufacturers choose NMi for its experience supporting innovative technologies through testing, inspection and certification. NMi Group provides independent technical assurance across regulated industries, helping organisations bring compliant, trusted products to market.
NMi is an industry expert in DC metrology. NMi certifies DC electricity meters and was one of the first bodies to provide MID certification for DC meters, alongside IEC 62053-41 and ANSI C12.32 testing.
Technical advisory
Product testing / Inspection
Manufacturer audits
Calibration
Regulatory compliance
Certification
— How it works
From submission to registry listing.
Current/OS certification capabilities continue to expand as the scheme develops. NMi is progressively extending the range of products supported under the scheme, with additional product categories to be added as the certification programme matures.
01
Contact
Contact NMi to discuss your product.
02
Requirements
NMi reviews your certification requirements.
03
Agree scope
The certification process and required documentation are agreed.
04
Assess
Product assessment is completed.
05
Certify
Upon successful assessment, certification is issued in accordance with the Current/OS scheme.
— FAQ
Certification, in plain terms.
What is Current/OS certification?
The process by which electrification devices, such as smart meters, EV charging equipment, batteries and single loads, are independently tested and verified before being listed as compliant within the Current/OS ecosystem.
Who is NMi and why does it certify Current/OS devices?
NMi is an independent certification body within NMi Group, an international ATICC organisation, designated for the Current/OS certification scheme. NMi carries out metrology, EMC, cybersecurity and interoperability testing for electrification devices, including those seeking certification within the Current/OS ecosystem.
How does a manufacturer start the certification process?
By starting the application through Current/OS. NMi then confirms scope, agrees a test plan, and carries out testing at an accredited facility before issuing a certificate.
Is NMi designated for this scope?
NMi is designated for this scope. NMi is a partner within the Current/OS scheme, a testing level authority for Current/OS, and participates in the scheme's execution committee.
Start your Current/OS certification journey.
If you are developing products for the Current/OS ecosystem, our specialists can help you understand the certification requirements and the most appropriate route to certification.
