Assurance Overview

Overview of testing

The SMDA scheme tests interoperability and interchangeability, and provides a degree of assurance that devices comply with the requirements of the Smart Metering Equipment Technical Specification (SMETS).  The SMDA scheme does not provide assurance that all SMETS requirements are met, but provides information to SMDA members regarding which requirements are tested.  The SMDA scheme can agree that additional testing should be performed on a risk-basis to demonstrate compliance with SMETS requirements that would not be proved through interoperability or interchangeability testing.

The testing consists of two parts:

  1. Interoperability relates to the ability of Type 1 devices to interact with the Data Communications Company (DCC), successfully receiving, interpreting, acting on and responding to messages.
  2. Interchangeability goes further, checking that all devices on the Home Area Network (HAN) such as in-home displays, meters, pre-payment interface devices or HAN connected auxiliary load switches can communicate with one another, interpret and act on commands, no matter what brand is being used.

Who tests?

The SMDA Scheme Operator appointed NMi Certin BV in December 2016 as the exclusive SMDA Test House.

NMi are an internationally recognised Dutch test house and certification body and were chosen to ensure a cost-effective scheme that is both capable of achieving a high quality and capacity for testing.

A specific SMDA test facility in Southampton opened in mid-2017. All interoperability and interchangeability testing takes place in this facility.